MedRx D-0125127-E 1 Studio Software REM LSM Training Instruction Manual
- June 5, 2024
- MedRX
Table of Contents
D-0125127-E 1 Studio Software REM LSM Training
“`html
Specifications
-
Product Name: AVANT REM+ and MedRx WREM
-
Function: Real ear acoustical characteristics measurement of
hearing instruments in-situ -
Standards Compliance: ANSI S-3.46, IEC 61669
-
Target Population: All ages
Product Usage Instructions
Getting Started
Ensure that the system hardware, software, and drivers are
properly installed and working by referring to the Studio Software
Installation Manual included in the original AVANT REM
packaging.
Intended Use
The AVANT REM+ and MedRx WREM devices are intended for use by
trained personnel only, including audiologists, ENT surgeons,
doctors, hearing healthcare professionals, or similar personnel
with appropriate education levels.
Transducers and Accessories
AVANT REM+ Accessories:
- Probe Microphones
- Headphones (Optional)
- Bluetooth Active Speaker
- USB Cable A-B
- Bluetooth Speaker Power Supply
- Probe Mic Hanger
- DC Power Supply (Optional)
- Bluetooth Speaker Audio Cable
- Desktop Active Speakers
MedRx WREM Accessories:
- Probe Microphones
- Headphones (Optional)
- USB Cable A-C
- Bluetooth Active Speaker
- Bluetooth Speaker Power Supply
- Probe Mic Hanger
- DC Power Supply (Optional)
- Bluetooth Speaker Audio Cable
- Desktop Active Speakers
Alternate Speaker Option
AVANT REM Speech+:
Note: Red & Blue adapters must be removed to attach
18 gauge (1.0mm) Free Field speaker wires.
To Install Free Field Speaker Wires:
-
Unplug both Red & Blue connectors.
-
Place a small flat head screwdriver on the small orange tabs
and push down while inserting a speaker wire into the opening, then
remove the screwdriver ensuring the wire is secure. -
Repeat for all speaker wires and plug both connectors back into
the device.
Note: Use a 15V 2A DC Power supply provided by MedRx
when using passive Free Field speakers.
Frequently Asked Questions (FAQ)
Q: Can the AVANT REM+ and MedRx WREM devices be used without
proper training?
A: No, these devices should only be operated by trained
personnel such as audiologists, ENT surgeons, doctors, or similar
professionals with appropriate education levels. Proper knowledge
and training are essential for understanding device use and result
interpretation.
Q: Are there any specific requirements for using Free Field
speakers with the AVANT REM Speech+?
A: Yes, you must remove the Red & Blue adapters to attach 18
gauge Free Field speaker wires. Additionally, use a 15V 2A DC power
supply provided by MedRx when using passive Free Field
speakers.
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Studio Software REM/LSM Training Manual
REAL EAR MEASURMENTS & LIVE SPEECH MAPPING
D-0125127-E 1
0123 TÜV SÜD Product Services GmbH Ridlerstraße 65 80339 Munich Germany
www.medrx-diagnostics.com
1200 Starkey Rd., #105, Largo, FL 33771 U.S.A. Toll Free:
888-392-1234 ·
727-584-9600 Fax:
727-584-9602 · Email: medrx@medrx-
diagnostics.com
MedRx’s Authorized Representative in Europe DGS Diagnostics A/S Audiometer
Alle 1 · 5500 Middelfart · Denmark
MedRx’s Archived manuals are available at www.medrx-diagnostics.com/support
/manuals-studio-software/archive
D-0125127-E 2
Contents
Getting to Know Your Real Ear Measurement……………………………….. 4 Transducers and
Accessories………………………………………………………. 5 Alternate Speaker
Option…………………………………………………………… 7 Alternate Speaker
Option…………………………………………………………… 8 Probe Mic Hanger
Installation…………………………………………………….. 9 Connecting the Speaker
…………………………………………………………… 10 MedRx Charger and Probe Charging …………………………………………..
11 Pairing Wireless Probes ……………………………………………………………. 12 Wireless REM Probe
Connections ……………………………………………… 13 The MedRx Studio Software
Overview……………………………………….. 14 Live Speech Mapping……………………………………………………………….. 15
Top Tool Bar …………………………………………………………………………… 15 Bottom Tool Bar
……………………………………………………………………… 16 General LSM Options ……………………………………………………………….
17 Positioning the Speakers ………………………………………………………….. 19 Speaker Calibration
…………………………………………………………………. 19 Probe Tube Calibration……………………………………………………………..
20 Step-by-Step Guide to Live Speech Mapping ………………………………. 21 Speech Mapping
with Recorded Inputs………………………………………. 22 Speech Mapping with Live Voice Inputs
……………………………………… 23
Running Speech Mapping “On-Top” ………………………………………….. 24 MedRx Live Speech
Mapping Protocol ……………………………………….. 24 Real Ear
Measurements……………………………………………………………. 25 MedRx Real Ear Measures
Protocol……………………………………………. 26
Additional Tests & Features………………………………………………………. 29 How to Perform the RECD
Task …………………………………………………. 30 Measuring Acoustic Feedback ……………………………………………………
31 Hearing Loss Simulator …………………………………………………………….. 32 Master Hearing
Aid………………………………………………………………….. 32 Printing …………………………………………………………………………………..
34 Rainbow Passage …………………………………………………………………….. 36 MedRx WREM EMC Precautions
……………………………………………….. 37 MedRx WREM Safety……………………………………………………………….. 44 MedRx
WREM Symbols that may be used…………………………………… 45 Avant REM+ EMC Precautions
…………………………………………………… 46 Avant REM+ Safety ………………………………………………………………….. 50 Avant
REM+ Symbols That May Be Used…………………………………….. 51 Recommended Procedures for
Cleaning and Disinfection …………….. 52 Technical
Information………………………………………………………………. 53 Limited Warranty
……………………………………………………………………. 55
D-0125127-E 3
The AVANT REM+ and MedRx WREM are devices that are used in measuring the real
ear acoustical characteristics of hearing instruments in-situ. The device
performs measurements of real ear acoustical characteristics of a hearing
instrument on a given human ear, and does comply with the International
Standards ANSI S-3.46 and IEC 61669.
This manual assumes that the system hardware, software and drivers are
installed and working properly. Please refer to the Studio Software
Installation Manual for assistance. The Installation Manual is included in the
original AVANT REM packaging in both printed and PDF formats.
The scope of this manual is to get you “up and running” with your AVANT REM
and MedRx WREM (Real Ear Measurement) System. Please consult the interactive
Help System within the software for more detailed information of features and
functionality. To access this tool, press the F1 key at any time, or click the
Help icon or text menu with your mouse. Access these by clicking on the “Help”
tab at the top of the screen, and select “Help Topics”. Select an item from
the list in the Index tab and click “Display”. Measurement uncertainty is +/-
1 dB.
Getting to Know Your Real Ear Measurement
Intended Use Statement:
The hearing aid analyzer is intended to be used for the purposes of correctly
configuring and prescribing the audible sound levels from a hearing
device/aid. It is intended to measure the internal effect of such device using
small and thin probe microphones which can be placed in the patients’ ear
canal to allow the clinician to objectively quantify the benefit and effect
the device has on the patients hearing. These measures are useful in the
fitting and prescription of acoustic hearing aids in correspondence with the
information acquired during the patient’s hearing assessment.
Target Treated Population:
The target population for real ear measurement assessment includes all ages.
Indication for Use Statement:
The hearing aid analyzers are to be used by trained personnel only, such as
audiologists, ENT surgeons, doctors, hearing healthcare professionals or
personnel with a similar level of education. The device should not be used
without the necessary knowledge and training to understand its use and how
results should be interpreted.
D-0125127-E 4
Transducers and Accessories
Avant REM+
Use the accessories provided with your REM+ device. Use of unapproved
accessories is not recommended.
Probe Microphones
Headphones (Optional)
Bluetooth Active Speaker
USB Cable A-B
Bluetooth Speaker Power Supply
Probe Mic Hanger
DC Power Supply (Optional)
Bluetooth Speaker Audio Cable
Desktop Active Speakers
D-0125127-E 5
MedRx WREM
Use the accessories provided with your WREM device. Use of unapproved
accessories is not recommended.
Probe Microphones
Headphones (Optional)
USB Cable A-C
Bluetooth Active Speaker
Bluetooth Speaker Power Supply
Probe Mic Hanger
DC Power Supply (Optional)
Bluetooth Speaker Audio Cable
Desktop Active Speakers
D-0125127-E 6
Alternate Speaker Option
AVANT REM Speech+
Notice! The Red & Blue adapters are included and must be removed to attach 18 gage (1.0mm) Free Field speaker wires and then reinstalled.
To Install Free Field Speaker Wires:
Screw Driver
Screw Driver
Unplug both the Red & Blue connectors.
Place a small flat head screwdriver on the small orange tabs and push down
while inserting a speaker wire into the opening then remove the screw driver.
Be sure the wire is secure.
Repeat until all the speaker wires are secured then plug both connectors into
the device as indicated above.
A 15V 2A DC Power supply provided by MedRx must be used when using passive
Free Field speakers.
D-0125127-E 7
Alternate Speaker Option
MedRx WREM
Notice! The Red & Blue adapters are included and must be removed to attach 18 gage (1.0mm) Free Field speaker wires and then reinstalled.
To Install Free Field Speaker Wires:
Screw Driver
Screw Driver
Unplug both the Red & Blue connectors.
Place a small flat head screwdriver on the small orange tabs and push down
while inserting a speaker wire into the opening then remove the screw driver.
Be sure the wire is secure.
Repeat until all the speaker wires are secured then plug both connectors into
the device as indicated above.
A 15V 2A DC Power supply provided by MedRx must be used when using passive
Free Field speakers.
D-0125127-E 8
Probe Mic Hanger Installation
Avant REM+
1. You will need the two Probe Mics, the Probe Mic Hanger and the clip.
4. Gently press clip into place.
2. Install the hook on the back side of the probe mic. Pull hook down to seat on the post.
5. Turn clip over, place probe mic wires into clip.
3. Once installed the large O-rings should be adjustable for fitting.
6. Larger view of clip with wires inserted.
7. Probe Mic Hanger installation assembly complete.
D-0125127-E 9
Connecting the Speaker
The front side of the speaker is placed at a distance of about 1 meter
(19″-39″) from the patient, for normal use.
It is preferred to plug the speaker into the power supply but it may be
powered by the internal battery. The Bluetooth option is not used.
The speaker’s power cable is a USB “male A to micro-B type”.
D-0125127-E 10
MedRx Charger and Probe Charging
The MedRx WREM is designed to charge the wireless REM Probes though Qi
charging. The MedRx WREM comes with a USB cable and wall adapter for power.
The LED lights in the MedRx Charger are designed to display the charge level
of the internal battery and the charging status of wireless REM Probes.
MedRx wireless probes can be inserted into either side of the charger. It is
important that the back (gray side) of the probe face toward the center of the
MedRx WREM to prevent damage and ensure charging occurs. Batteries are not
changeable by the user.
Left Side
of Charger Status
Right Side of Charger Status
Internal Battery LED Color Indicators
Solid Green when Connected to PC
Blinking Battery is charging
Green Battery is 66%,
Yellow battery is between 66% and 33% charged
MedRx WREM with Probes attached
Internal Battery Status MedRx WREM LEDs display status of Batteries
Red Battery is 33% charged
NOTE: The MedRx WREM has an internal battery which can charge the wireless REM probes during transit.
To prevent charging of the REM probes when not necessary in the MedRx Charger,
inserting the probes into the device and then turning off the device. To turn
off the device, unplug the PSU and/or USB-C cable. Place the Probes in the
MedRx Charger. Touch the medallion until the LED(s) turn on and as soon as the
LED(s) turn off, touch and hold the medallion
until the RX light flashes on and off. Touch the medallion to verify the
LED(s) remains off. There are 3 options to power back on the device; re-insert
a probe, apply USB power, or apply 15VDC power.
MedRx Wireless probes can also be charged with a USB-C cable.
D-0125127-E 11
Pairing Wireless Probes
New WREM devices will have the REM Probes pre-paired with the main unit. There
will be no need to manually pair probes on new units. Pairing is for
replacement probes for the WREM.
Pairing is only performed one time and is not needed for daily use.
Manually Pair Replacement wireless Probes
To pair replacement wireless REM probes
1. First you will need to prepare the probe for pairing. With the Wireless
REM probe powered off, press and hold the power button while plugging in the
new Wireless REM probe to USB power. Release the power button and now the
probe light will begin flashing quickly.
3. The pairing display will open with both probes selected to pair. Select only the probe you wish to pair. Click “Start” to place the WREM in pairing mode.
2. Open Studio and Enter the REM or LSM module. Click the three dots in the top menu and select “Pair”
4. The Studio software will lightly fill the status circle (blue or red
depending on earside) when a connection is established. The pairing is
complete when the serial number is displayed in the pairing window. Confirm
the serial number matches the probe you are trying to pair.
D-0125127-E 12
5. Click Stop
6. Pairing is complete. Repeat steps 1 to 5 if you need to pair another
probe.
7. Once all probes are paired click “Close” to begin REM or LSM.
Wireless REM Probe Connections
NOTE: The wireless REM Probe will only connect while MedRx Studio is in either
the REM or LSM Module. To connect wireless REM probes to the baseboard
1. Open Studio and Enter the REM or LSM module
The Probe Indicator should show ? in the battery which indicates the software
is searching for wireless Probes
2. Power on the wireless REM Probes. LED will blink green indicating probe is
searching for connection.
3. The Studio software will lightly fill the status bar when a connection is
being established
4. The WREM is fully connected and ready for testing when the status bar has
dark filled circles and battery status is available.
5. The wireless REM Probe LED will turn a solid color upon successful
connection.
Note: Wireless Probes will automatically turn off 30 seconds after powering on
if MedRx Studio is not in either REM or LSM modules.
D-0125127-E 13
The MedRx Studio Software Overview
The MedRx Studio software can run stand-alone, from Noah System or the TIMS
Noah-Compatible Office System.
Launching the MedRx Studio Software
Basic Software Options
Several options are available which allow the user to customize the MedRx
Studio Software to meet their needs.
Access these options by clicking the settings wheel in the top right menu bar.
Stand Alone
· Double click the MedRx Studio shortcut on your Windows Desktop.
Noah
· Launch Noah. · Select a patient. · Launch MedRx Studio module following Noah
procedures.
The MedRx Studio software main screen. Icons are selectable depending on your
equipment.
D-0125127-E 14
Live Speech Mapping
The Main Screen settings allows you to set the default modules, database,
print templates and more.
If you have more than one MedRx product you can show/hide modules in the Main
Screen settings. NOTE: Remember, more information is always available in the
Interactive Help System by clicking the “?” Icon in the top right corner of
the software or pressing the F1 key.
Select LSM from the main menu.
Top Tool Bar
The Tool Bar icons have the following functions:
1. On-Top Window 2. Tube Calibration 3. Speaker Calibration 4. Save Session
and Exit 5. Save Session 6. Print 7. Show Journal 8. Show Settings 9. Show
Help 10. More Options The More Options icons have the following functions: 1.
Save the current session to a file 2. Open session from a file 3. Clear Data
from Current Test 4. Probe Monitor 5. Microphone Calibration
D-0125127-E 15
Bottom Tool Bar
The Bottom Tool Bar icons have the following functions:
The Wrench icon displays options for: 1. Ear Selection 2. Stimulus Selection 3. Viewing Mode 4. Open Fit Function 5. Start & Stop Buttons
The Target Selection icon sets up: 1. Target type 2. Client information 3. Hearing aid parameters
The Display icon sets up which target lines to display on the measurement screen.
NOTE: Remember that more information is always available in the Interactive
Help System by clicking the Help Icon or pressing the F1 key.
D-0125127-E 16
General LSM Options
Click the settings wheel in the top right menu bar.
The LSM tab sets your default view and default target levels.
The Fitting tab sets the default fitting rule, client information, output and hearing aid parameters.
The General tab defines the default appearance of the Live Speech Mapping test environment.
The Fitting tab also sets default NAL or DSL default settings.
D-0125127-E 17
The Signal tab sets the signals displayed on the Live Speech Mapping Screen.
The REUR tab sets the default appearance and units displayed on the REUR graph.
The Shown Tests tab sets the tests displayed in the Live Speech Mapping module.
The REOR tab sets the default appearance and units displayed on the REOR
graph.
The Percentiles tab sets the default appearance and percentiles displayed on
the graph..
D-0125127-E 18
Preparing for Testing
Positioning the Speakers
Proper positioning of the loudspeakers relative to the patient’s hearing aids
is critical for making accurate and repeatable measurements. Seat the patient
so their ear is between 19 and 39 inches from the loudspeaker. The speaker is
designed to sit at desk height. When using Live Speech inputs, position the
patient and loudspeaker as shown below.
Speaker Calibration
Open the Speaker Calibration screen by clicking the Speaker icon from the
REM/LSM top menu bar.
The speaker should be positioned in such a way that nothing blocks the path of
the emanated sound in front and on the sides of the speaker. For example,
positioning a speaker behind a monitor is incorrect and can severely affect
its response at the measurement location. The speaker diaphragm should be at
about the same level as the patient’s ear and the reference microphone.
Place the reference microphone on the patient about 1 meter from the speakers.
Click on Start to begin the calibration and wait until it ends. Observe the
response curve to flatten itself out. The darker curve is showing the response
used by the equalization algorithm, the lighter curve is showing the current
microphone input. Use of the powered speaker supplied with this device is
recommended.
D-0125127-E 19
Probe Tube Calibration
For reasons of infection control and reliability of results, MedRx recommends
that a new probe tube be used with each patient. To ensure accurate
measurements, it is necessary to calibrate the probe tube each time it is
replaced. 1. Place a new probe tube on the probe microphone port as shown.
2. Place the probe tube between the calibration nibs as shown. Be sure that
the opening of the probe tube is centered on the opening of the reference
microphone.
In the MedRx Studio LSM software, click the Probe Tube Calibration icon.
Position probe microphone between 19 and 39 inches from the loudspeaker and
click Start Both to run simultaneously. The signal must be at least 70 dB to
complete a valid calibration. If the screen prompt indicates the signal is too
low, increase the volume on the loudspeaker or move the patient closer and
restart the calibration.
Repeat for the other probe if calibrated one at a time. Valid calibrations
have the same approximate shape as the gray target curve. If the measured
calibration curve differs greatly in shape or amplitude from the gray target
curve, check or replace the probe tube and re-calibrate. If this does not
correct the problem, contact MedRx technical support at
888-392-1234.
The calibration values are available under the Calibration top menu icon.
Click the More Options icon (3 dots) then click the Calibration icon.
Return Probe Microphones to MedRx for annual re-calibration. Annual re-
calibration of the Avant REM+ Probe Microphones is recommended. There are no
user repairable components on this device.
D-0125127-E 20
Step-by-Step Guide to Live Speech Mapping
Ensure that the Audiogram is entered Before making Live Speech Mapping
measurements, the patient’s pure tone audiogram must be available to the
software. This can occur several ways:
1. The audiogram was automatically entered by MedRx Studio software when
testing.
2. The audiogram was manually entered into the Noah audiogram module or Noah
4 software and saved.
3. The audiogram was entered using another manufacturer’s audiogram module.
If none of these have occurred, you may manually enter the audiometric data
into the REM software as follows:
1. Under General, then Shown Tests, select show Tone.
2. Select AUD module located at the top left of the software.
3. Using your mouse, select the test ear. 4. Select the test type AC. 5.
Enter thresholds by clicking the intersection points with the
mouse. (You may also enter the audiogram by selecting the audio tab in either
the REM or HLS/MHA screens). 6. Repeat for UCL (Bone and MCL optional). 7.
Repeat steps 3-5 for the other ear.
After the audiogram is entered, click the LSM button to return to the MedRx
Studio LSM testing screen.
The Operator Headphone (optional) is used by the operator to monitor the
signal being received by the probe microphone.
D-0125127-E 21
Speech Mapping with Recorded Inputs
It is also possible to use an audio CD, such as the patient’s favorite music to perform Speech Mapping.
Select CD as an option under General and Signal.
The Studio software provides several digital audio files to use as a
repeatable stimulus for Speech Mapping. These are accessed by clicking the
File button on the right and then selecting the desired track from the pull-
down menu in the audio player. Peak measurements are recommended.
Once the desired pure tone or white noise track is selected, click the Start
button to begin measuring. A pure tone or white noise will be presented and
once it reaches the selected input level with the slide bar, the chosen track
will play. When enough data is collected, click the Stop button to stop the
recording and record the measurement.
Select the CD button and then select a track. Use the sound level meter on screen to check the proper level. Adjust the output of the speaker to desired level using the sound level meter. (Remember conversational speech is 65 dB at 1 meter).
D-0125127-E 22
The screen shot below provides an overview of all the tools and controls on the Live Speech Mapping screen. For more information on these features, please consult the Interactive Help system by pressing the F1 key or clicking the Help icon.
Speech Mapping with Live Voice Inputs
1. Sound Level Meter 2. Ear Selection 3. Test Stimulus
4. Measurement Type · Peaks
· LTAS 5. Open Fit Function 6. Reset Button 7. Start and Stop Buttons 8. Tools
Tab, Target Selection Tab, and Display Tab 9. Legend 10. Target Area can be
any of the following:
· MedRx Modified Speech Spectrum · DSL IO · NAL-NL2
· NAL-NL1
Using the microphone allows measurement of both the professional’s voice and
that of a third party e.g., the patient’s significant other or family members.
To improve repeatability of measurements, it is recommended that the speaker
read a standard passage such as the “Rainbow Passage” which is provided on
page 36. NOTE: The screen shot above shows the MedRx Modified Speech Spectrum
(Canoe). It is also possible to use DSL IO or NAL-NL2 targets on this screen.
Click the Setting wheel in the menu bar on the top right of the screen to
select and configure these targets to meet the needs of your practice.
D-0125127-E 23
Running Speech Mapping “On-Top”
The MedRx Studio system is tightly integrated with Noah, the industry standard
for audiometric and fitting data storage and retrieval. The On-Top mode of the
LSM software allows you to effortlessly alternate between measurement and
fitting adjustments.
From the MedRx Studio LSM main screen, click the On-Top Window. The LSM window
will reduce in size and “float” on top of your fitting software. Use the text
menus and green (start) and red (stop) buttons in the floating LSM window to
preform Speech Mapping measurements.
Completing the On-Top Mode Process
Close the REM module by clicking the X button or the back arrow in the top
left. Save the session as normally.
MedRx Live Speech Mapping
Protocol
Unlike other products, the AVANT REM+ system places full control over the
measurement environment firmly in the hands of the hearing care professional.
The system is powerful, yet extremely flexible, allowing each provider to use
Live Speech Mapping in a way that complements their practice style rather than
compromising it.
In order to get you “up and running” with the AVANT REM+ system, MedRx has
developed the following protocol. This simple procedure has been found to be
effective with both audiologists and hearing instrument specialists. After
mastering the basic operation of the system utilized in this protocol, you are
encouraged to further expand your use of Live Speech Mapping in your practice.
Feature-specific help is available by simply pressing the F1 key or clicking
on the Help icon or text menu.
1. Complete a careful otoscopic examination as instructed by the manufacturer
of your otoscope. a. For MedRx Video Otoscopes, refer to the Help system
within the software by pressing the F1 key or clicking the Help icon or text
menu.
D-0125127-E 24
2. Basic Diagnostics. a. Using your audiometer, measure and record the
following values: b. Pure Tone Air and Bone conduction thresholds. c. Narrow
Band Noise or Pure Tone UCL at 500, 1000, 2000 and 4000 Hz. d. Other tests if
needed in your practice or jurisdiction.
3. Position patient as described earlier in this manual on page 19.
4. Calibrate Probe Tube as described earlier in this manual on page 20.
5. Option 1: Measure and place the probe tube in the ear canal. (Use chart to
the left).
6. Option 2: Use the probe tube depth guide to accurately place the probe
tube1.
7. Complete a Live Speech Mapping measurement UNAIDED (REUR). a. ISTS or file
input b. Peak Measures c. 1/3 Octave resolution
1. Probe placement indicator was developed and validated for adults with
normal outer and middle ear function. Use with other patient populations is
not advised.
8. Carefully place the hearing instrument in the ear without disturbing the
probe tube.
9. Complete a Live Speech Mapping measurement AIDED (LSM). 10. Using the On-
Top mode, make any adjustments needed to the
hearing instrument so that: a. The LSM curve for Quiet Speech (50 dB) is at
the bottom of the white modified speech spectrum (canoe). b. The LSM curve for
Conversational Speech (65 dB) should be within the white modified speech
spectrum. c. The LSM curve for loud sounds (80 dB) (very loud speech, clapping
hands, etc.) is approximately 10 dB below the UCL curve.
Real Ear Measurements
In addition to Live Speech Mapping, the Avant REM+ supports all conventional
Real Ear Measurements (REM). All these tests are accessed from the main REM
screen. To begin, click the REM icon on the MedRx Studio main screen.
D-0125127-E 25
Real Ear Measurement Settings
The screen shot below provides an overview of all the tools and controls on
the REM screen. For more information on these features, please consult the
Interactive Help system by pressing the F1 key or clicking the Help icon.
1. REM Test Options 2. Ear Selection 3. Test Stimulus 4. Open Fit Function 5.
Time Indicator 6. Start and Stop Buttons 7. MSC 8. Tools Tab, Target Selection
Tab, and Display Tab 9. Legend 10. Target Area can be any of the following:
a. DSL IO b. NAL-NL2 c. NAL-NL1
Descriptions of the various Stimulus options are presented in the Help files
under the topic Signal Types. Access these by clicking on the Help tab at the
top of the screen, and selection Help Topics. Select an item from the list in
the Index tab, and click Display.
MedRx Real Ear Measures
Protocol
1. Complete a careful otoscopic examination as instructed by the manufacturer
of your otoscope. a. For MedRx Video Otoscopes, refer to the Help system
within the software by pressing the F1 key or clicking the Help icon or text
menu.
2. Basic Diagnostics. a. Using your audiometer, measure and record the
following values: b. Pure Tone Air and Bone conduction thresholds. c. Narrow
Band Noise or Pure Tone UCL at 500, 1000, 2000 and 4000 Hz. d. Other tests if
needed in your practice or jurisdiction.
3. Position patient as described earlier in this manual on page 19.
D-0125127-E 26
4. Calibrate Probe Tube as described earlier in this manual on page 20.
5. Option 1: Measure and place the probe tube in the ear canal. (Use chart to
the left).
6. Option 2: Use the probe tube depth guide to accurately place the probe
tube1.
7. Complete a Real Ear Measurements UNAIDED (REUR). a. ISTS or file input b.
Peak Measures c. 1/3 Octave resolution
8. Complete a Real Ear Measurement AIDED (REAG) 9. Using the On-Top mode,
make any adjustments needed to the
hearing instrument so that: a. The REM curve for Quiet Speech (50 dB) is
within 3 to 5 dB of all of the points on the prescription curve. b. The REM
curve for Conversational Speech (65 dB) is within 3 to 5 dB of all of the
points on the prescription curve. c. The REM curve for Loud Speech or sounds
(80 dB) is approximately 10 dB below the UCL curve.
10. If measuring for Insertion Gain (REIR), then it is suggested that REUR
(no hearing aid seated in the canal) and REAG (hearing aid seated in the canal
and functioning) be completed. After the REUR is run, a curve will be plotted
by the software on the REUG screen as well. It is suggested because REIR =
REAG REUG. See the
1. Probe placement indicator was developed and validated for adults with
normal outer and middle ear function. Use with other patient populations is
not advised.
description of each measurement under REM tests in the manual, by clicking on
F1 or by clicking on the question mark symbol at the top right of the window.
Stimulus Signal Types
Pure Tone: A pure sine wave. Crest Factor = 1.41 (3.0dB)
Broadband Noise (BBN): Uniform random noise with normal (Gaussian) amplitude
distribution. Can be weighted to White, Pink, Speech ANSI, and Speech Byrne
(see below.)
Pseudo Random Noise (PRN): A “synthetic” broadband random noise. It is less
uniform than BBN, has lower spectral density and random volleys. Can be
weighted to White, Pink, Speech ANSI, and Speech Byrne (see below.)
ICRA Noise: This stimulus was developed for measuring characteristics of non-
linear instruments. The noise is weighted to Byrne LTASS.
ISTS: (International Speech Test Signal) Initiated by European Hearing
Instrument Manufacturing Association (EHIMA.) This signal is based on natural
recordings of 21 female speakers in six different languages American English,
Arabic, Chinese, French, German and Spanish. The signal is largely non-
intelligible because of segmentation and remixing. The speech material was
filtered to Byrne LTASS.
Crest Factor: 9.23 (19.3dB)
Rainbow Passage: Natural recordings of several voices reciting the rainbow
passage. Shaped to Byrne LTASS.
Broadband Noise Weighting
White: This is essentially no weighting or filtering. The White Noise has flat
power spectral density. Power at every frequency is equal. Because
D-0125127-E 27
the density of frequencies (individual cycles) raises with frequency, there is
more energy in high octaves.
White-weighted noise can be used mostly for testing of equipment. It is not
recommended to use it for hearing aid fitting, unless specified by the
manufacturer.
Crest Factor: BBN = 1.73 (4.8dB), PRN = 7.86 (17.9dB)
Pink: The noise is filtered so its energy per frequency (power spectral
density) is inversely proportional to the frequency. Each octave carries the
same amount of energy. Comparing to White Noise, the Pink Noise energy drops
approximately 3dB per octave.
Pink-weighted noise can be used mostly for testing of equipment. It is not
recommended to use it for hearing aid fitting, unless specified by the
manufacturer.
Crest Factor: BBN = 3.67 (11.3dB), PRN = 6.55 (16.3dB)
Speech Byrne: The noise is approximately weighted to International Long
Terms Average Speech Spectrum (ILTASS) as described in Byrne et. al., 1994.
The noise with this weighting is preferred for hearing aid fitting because its
spectrum is the best approximation of the spectrum of real human speech.
Crest Factor: BBN = 4.22 (12.5dB), PRN = 3.47 (10.8dB)
Speech ANSI: The noise is approximately weighted to ANSI S3.42 Speech Noise.
The noise with this weighting can be used for fitting hearing aids. The slope
of ANSI-weighted noise is not as steep as Byrne-weighted, so there is more
power in higher octaves. This will result in less gain
required by the hearing aid to reach targets, but may result in underfitting
at high frequencies.
Crest Factor: BBN = 4.46 (13.0dB), PRN = 5.17 (14.3dB)
To activate specific REM tests, click the buttons as follows:
Opens the audiometry data entry screen. Use this if audiometry has not been
previously measured and entered into Noah.
Real Ear Unaided Response – Measures the additive effect of the ear canal’s
resonance to a stimulus. Reported as dB SPL of output.
Real Ear Unaided Gain – Measures the additive effect of the ear canal’s
resonance to a stimulus. Reported as dB SPL of gain. If a real ear unaided
response (REUR) curve has been measured, the corresponding real ear unaided
gain curve is automatically plotted to the REUG screen.
The difference between the REUG and the REAG is called the Real Ear Insertion
Gain (REIG). This Insertion Gain information is used to compare to the target
gain curve selected for the client.
The Real Ear Aided Response (REAR) is the sound pressure level in the ear
canal measured with the probe microphone close to the eardrum and the
operating hearing instrument inserted in the ear and turned on. ANSI defines
REAR as the SPL, as a function of frequency, at a specified measurement point
in the ear canal for a specified sound field, with the hearing aid in place
and turned on.
D-0125127-E 28
The REAG is simply the REAR expressed as gain rather than SPL. Selecting REAG
allows you to see the gain at each frequency for each of the REAR curves
measured.
REOR measures the effect on the natural external ear effects resulting from
inserting an ear mold or a hearing instrument, before it is turned on, into
the ear canal. The REOR is also referred to as Insertion Loss. REOR is also
useful for validating the effectiveness of venting or canal length changes to
the mold.
The Real Ear Occluded Gain (REOG) is the difference in decibels, as a function
of frequency, between SPL in the ear canal and SPL at the reference microphone
at the entrance of the ear canal with the hearing aid in the ear and turned
off. For each REOR measurement curve, the corresponding REOG curve is
calculated and automatically plotted to the REOG screen. The REOG function is
useful in determining the acoustic seal of a hearing aid, relative to a sound
field outside the ear.
Some clients report they seem like they are “speaking in a barrel” or “feel
blocked up”. These are signs of a buildup of self-generated low frequency
energy in the ear canal. This excessive occlusion can be measured objectively
in the Occlusion Effect task.
The Real Ear to Coupler Difference (RECD) is used to simulate real ear
measurements by coupler measurements and is useful when fitting children or
“difficult” to fit patients. See the section on RECD later in this manual for
more detail.
The Maximum Power Output test measures hearing aid response at high input
levels. The software measures MPO with ISTS multitalker noise played at 55dB
and then
five 90dB tone bursts at the following frequencies: 500Hz, 1000Hz, 2000Hz,
4000Hz, 5000Hz.
Additional Tests & Features
Real Ear to Coupler Difference (RECD)
The Real Ear to Coupler Difference (RECD) is used to simulate real ear
measurements by coupler measurements and is useful when fitting children or
“difficult” to fit patients. RECD measurements can be conducted outside of a
Hearing Instrument Test Box when using the optional MedRx RECD Coupler.
The RECD values are used as a correction to coupler measures for that client’s
hearing instruments. By performing all subsequent measures in the coupler and
applying the RECD corrections to the coupler
D-0125127-E 29
measures, the “real ear” factors are incorporated into the results. The
resulting simulated measurements provide information to select and make
adjustments to the hearing instrument and verify adjustments in the MedRx
coupler rather than in the uncooperative client’s ear. This is particularly
important in the case of children, whose small volume ear canals enhance high
frequency amplification more so than in average adults. This is an essential
consideration in determining the maximum output of the hearing instrument.
If RECD data is present, the software will display an option to choose between
Ear or Coupler measurement on all Real Ear screens where measurements in a
coupler are appropriate.
There are two ways to measure the REAR response with optional RECD coupler:
using an insert headphone or a hearing instrument.
If a hearing instrument is used, its volume control setting and other
parameters should remain the same for both REAR and coupler measurements. Set
the volume control to moderate, and turn the compression and noise reduction
circuits off.
Using open-fit hearing aids for RECD measurements may result in invalid low
and mid-frequency measurements because of insufficient gain at those
frequencies. Please contact your hearing aid manufacturer for recommendations.
How to Perform the
RECD Task
First, perform the REAR task to obtain a REAR curve. This can be measured with
a hearing instrument or an insert earphone.
REAR with a hearing instrument
· Adjust volume of the hearing instrument to comfortable listening level. Turn
the compression and noise reduction circuits off.
· Position the client less than one meter from the speaker and facing the
speaker.
· Place the hearing instrument and the probe microphone tube as for all REM
measurements.
· Select START to open the measurement type selection screen.
· Choose the REAR with a Hearing Aid option. · Select OK to begin the test and
wait until it
concludes.
REAR with an insert headphone
· Place the probe microphone tube as for all REM measurements but use the
insert headphone instead of a hearing instrument.
· Select START to open the measurement type selection screen.
· Choose the REAR with an Insert Headphone option.
· Select OK to begin the test and wait until it concludes.
D-0125127-E 30
Coupler Response
When the REAR measurement is complete, you are prompted to perform a coupler
response.
· Attach the hearing instrument or the insert headphone (must be the same as
in the REAR test) to the appropriate coupler and place the probe tube inside
the coupler.
· If a hearing instrument is used, be sure to perform this measurement at the
same volume control setting as the first measurement.
· Select START to open the measurement type selection screen.
· Choose the Coupler Response option or Use Stored to skip the measurement
(see note below.)
· Select OK and wait until the test completes. · The calculated RECD curve is
automatically displayed on the
screen and is stored in memory for correction of subsequent coupler
measurements made from the RECD function.
NOTE: If the REAR and the coupler response were measured with the insert
headphone, the program saves the coupler response curve for later use. In this
case to obtain another RECD, only REAR with insert headphone measurement is
necessary. This is possible because the coupler response does not change
provided that neither the coupler nor the insert earphone has changed.
NOTE: After measuring RECD, it is possible to perform Live Speech Mapping in
the coupler as well. Look for the “Measuring in” option on the LSM screen.
Measuring Acoustic
Feedback
Feedback (whistling, howling) is one of the most common complaints of hearing
instrument users. Even though many modern hearing instruments have
sophisticated feedback management systems, knowing exactly where the feedback
is occurring can greatly reduce the time required to resolve the problem. The
AVANT REM+ system does an excellent job measuring and displaying acoustic
feedback.
1. Place the calibrated probe tube in the ear canal as instructed previously.
2. Place the hearing instrument in the ear without disturbing the probe tube.
3. Begin a Live Speech Mapping session as instructed previously.
4. When feedback is present, click the Start button.
5. Acoustic feedback appears as a large spike in the LSM response.
D-0125127-E 31
If a more specific frequency analysis of the feedback is desired, change the
resolution of the system to 1/24 octave and adjust the smoothing in the
General LSM or REM settings menu. This image shows the similar feedback as
above at 1/24 octave, smoothing 1.
Using this information, make any necessary adjustments to the hearing
instrument to reduce or remove the feedback.
Hearing Loss Simulator
The Hearing Loss Simulator demonstrates the effect of the client’s hearing
loss for the significant third party. The program attenuates an input signal
to simulate the audiogram. The third party listens to the free field speakers.
The Hearing Loss Simulator requires the client’s Audiogram data. This data can
be manually entered in the Audio screen of this or any other task.
How to use the Hearing Loss Simulator
1. Select the Hearing Loss Simulator tab on the toolbar. 2. Enter the
Audiogram values manually if the data is not
automatically imported to this screen. 3. Select the input signal type: File
or CD. Select the track and the
Play button on the control panel. The HLS output is directed to the free field
loudspeakers.
4. Select Simulate to turn on the simulation of the client’s hearing loss.
Deselect Simulate to present the stimulus as a normal hearing person would
perceive the sound. Toggle between these selections as necessary.
5. The Reset option restores the audiogram to the original state. Use this
option if you have modified the audiogram while in the simulate mode but want
to undo the changes. The changes to the Audiogram that are made on the HLS
screen are temporary and will not affect the client’s original audiometry
record.
6. A volume control adjustment bar allows modifying the audio for manual
adjustment of the output level of the free field speakers. This allows the
practitioner to demonstrate improvements to hearing loss with amplification or
what happens when further hearing loss occurs.
7. To stop the playback, select the Stop button on the player.
Note: It is recommended you use a variety of tracks from the list to
demonstrate the hearing loss.
Master Hearing Aid
Master Hearing Aid is an alternative to using a stock hearing aid to
demonstrate the benefits of amplification to an inexperienced user. The system
applies the fitting rules by default to the patient’s audiogram and simulates
a hearing aid. The patient listens to this signal through the headphones.
Options for editing the gain applied to the audiogram are provided.
About the Master Hearing Aid Display
The Master Hearing Aid screen displays a graph with dB Gain on the vertical
axis and Frequency in Hz on the horizontal axis. The plot on the graph
represents the gain applied to the patient’s Audiogram. The NAL-
D-0125127-E 32
RP is applied by default. A new rule can be selected from the list on the
right side of the display. A volume adjustment bar allows for manual
adjustment of the output level. The control panel on the right of the display
provides options for input signal source and the task icons for Normal and
Simulate.
The Master Hearing Aid applies gain separately for each ear. If audiogram
values are entered for the left and right ear, the selected fitting rules will
be applied to each ear separately. Different rules may be entered for each ear
(i.e. NAL-RP for left ear and BERGER for right ear). If an audiogram is
entered only for one ear, the gain will not be adjusted for the opposite ear
and the sound for that ear will be normal.
If Binaural mode is selected, the sound will be heard from both channels (left
and right). If Monaural mode is selected, the sound will be heard only from
the channel corresponding to the active ear when the channel for the opposite
ear will be muted.
Input signal
File allows the user to play sound files. The program supports MP3 and WAV
files and comes with a preset MedRx Sounds Sensations set of files. After the
option is activated, use the player panel to control the playback.
CD allows the user to play music CDs. After the option is activated, use the
player panel to control the playback.
How to use the Master Hearing Aid:
1. Select the Master Hearing Aid (MHA) icon from the main screen.
2. Enter the Audiogram values manually if the data is not automatically
imported to this screen.
3. Select the input signal type: File or CD. 4. Select Monaural or Binaural.
5. Select the Simulate icon to modify the input signal according to
the selected rule. This selection allows the patient to hear the benefits of
amplification. Deselect the Simulate icon which will send the input signal
through to the inserts without modification. The patient is listening to the
signal without any amplification benefit. Toggle between these two selections
as necessary. 6. If the simulated frequency response needs to be adjusted
based on feedback from the patient, manually edit the response by clicking on
the gain curve at the desired frequency and new gain level. The gain curve of
the selected test ear on the control panel can be edited. To edit the other
ear, click the appropriate test ear icon on the control panel first.
Hint: Use the track return icon on the player control panel to replay one
track continuously.
The Reset option restores the rule to the original state. Use this option if
you have modified the rule but want to undo the changes.
D-0125127-E 33
Printing
Printing within the MedRx Studio software. You can use the templates provided
at installation or create your own templates to suit your needs.
Icons in the Print Window
1. Create a new template. 2. Preview template icon. 3. Print template icon.
4. Select the template you would like to use. 5. Shortcut to templates folder
on your desktop. 6. Studio Help icon. 7. Edit the template with the pencil
icon. Editing a template will
open the print editor and allow you to adjust print elements. 8. Duplicate
existing templates icon. 9. Delete template icon.
To Use an Existing Print Template
1. Click the print icon in the top tool bar or hold down the Ctrl key and
click the P key on your keyboard.
2. Select the template you would like to use.
3. Click the print preview icon to see the patient’s data & images on the
template before printing.
4. Click the print icon.
5. The printer options box will pop-up.
6. Click print. 7. Or click Ctrl+Shift+P to
print the modules default template.
D-0125127-E 34
Create New Print Templates
1. Select the printer icon.
2. Select the + icon to create a new template.
3. Name the template you are creating.
4. Choose page orientation.
5. Use the drop-down menu to choose the size of paper you will be using.
6. In the bottom left, Page Zoom will allow you to zoom in/out of the
template for easier editing.
7. In the bottom left, the Page Margin is set by default to the ideal level.
Adjusting this will determine how far items will print from the edges.
8. Drag and drop elements onto the page to create your template.
a. You can combine data from multiple modules into a single template.
b. Elements may overlap and will stack/cover previously added elements.
c. Certain elements will have settings that can be adjusted after dropping
onto the page.
d. You can resize all elements. The contents of each element will resize
within the box depending on the amount of data in the element.
9. Use the + button to add additional pages if needed.
10. After template completion, use the Save, Save As, Preview and Print Icons
for your template.
a. Saved templates will be available for future sessions. b. Print a template
to ensure that all elements print as
expected.
D-0125127-E 35
Rainbow Passage
When the sunlight strikes raindrops in the air, they act like a prism and form
a rainbow. The rainbow is a division of white light into many beautiful
colors. These take the shape of a long round arch, with its path high above
and its two ends apparently beyond the horizon. There is, according to legend,
a boiling pot of gold at one end. People look, but no one ever finds it. When
a man looks for something beyond his reach, his friends say he is looking for
the pot of gold at the end of the rainbow.
D-0125127-E 36
MedRx WREM EMC Precautions
MedRx WREM should be operated only in a professional healthcare facility by
trained professionals with education and/or training in the field of
audiometry. Further the equipment can’t be used in a residential environment.
The EMISSIONS characteristics of this equipment make it suitable for use in
industrial areas and hospitals. If it is used in a residential environment
this equipment might not offer adequate protection to radio-frequency
communication services. The user might need to take mitigation measures, such
as relocating or re-orienting the equipment.
Bluetooth use 79 channels in the 2.4 GHz ISM band. This band ranges from 2400
MHz to 2483.5 MHz. Reception bandwidth 83.5MHz. Modulation GFSK. Maximum EIRP
is 20 dBm.
Wireless Power Transfer (WPT) for Qi wireless charging has a frequency band
range from 130-160 kHz. Qi resonant inductive coupling field strength measured
is 76.4 dBV/m.
As a basic safety features the device is designed in such a way that the
output from the transducer never goes beyond 80db irrespective of the short-
term disruptions that may occur.
The transmit power in Bluetooth lies between -20dBm and 20dBm
The MedRx WREM needs special precautions regarding EMC and needs to be
installed and put into service according to the following EMC information.
List of all cables and maximum lengths of cables, transducers and accessories:
Transducer / Accessories
Maximum Cable length
USB Cable
2.9 meters
All Speakers
3 meters
D-0125127-E 37
Warnings!
· The use of accessories, transducers and cables other than those specified,
with the exception of transducers and cables sold by the manufacturer of the
MedRx WREM as replacement parts for internal components, may result in
increased emissions or decreased immunity of the MedRx WREM.
· The MedRx WREM should not be used adjacent to or stacked with other
equipment and if adjacent or stacked use is necessary, the MedRx WREM should
be observed to verify normal operation in the configuration in which it will
be used.
· The MedRx WREM may be interfered with by other equipment, even if that other
equipment complies with CISPR emission requirements. · The MedRx WREM does not
have life supporting function. · Portable RF communications equipment
(including peripherals such as antenna cables and external antennas) should be
used no closer than 30
cm (12 inches) to any part of the MedRx WREM, including cables specified by
the manufacturer. Otherwise, degradation of the performance of this equipment
could result.
D-0125127-E 38
Guidance and manufacturer’s declaration electromagnetic emissions
The MedRx WREM is intended for use in electromagnetic environment specific below. The customer or the user of the MedRx WREM should assure that it is used in such an environment.
Emission test
Compliance
Electromagnetic environment – guidance
RF emissions CISPR 11
Group 1 Class A
The MedRx WREM uses RF energy only for its internal function. Therefore, its RF emissions are very low and are not likely to cause any interference in nearby electronic equipment.
RF Conducted emissions
Harmonic emissions IEC 61000-3-2
Group 1 Class A Class A
The MedRx WREM is suitable for use in all establishments other than domestic and those directly connected to the public low-voltage power supply network that supplies buildings used for domestic purposes.
Voltage fluctuations / flicker emissions IEC 61000-3-3
Complies
Guidance and manufacturer’s declaration electromagnetic immunity
The MedRx WREM is intended for use in electromagnetic environment specific below. The customer or the user of the MedRx WREM should assure that it is used in such an environment.
Immunity test
IEC 60601 test level
Compliance level
Electromagnetic environment – guidance
Electrostatic
discharge (ESD) IEC 61000-4-2
+/- 8 kV contact discharge
+/- 2, 4, 8 &15kV
+/- 8 kV contact discharge
+/- 2, 4, 8 &15kV
Floors should be wood, concrete or ceramic tile. If floors are covered with synthetic material, the relative humidity should be at least 30%.
air discharge
air discharge
Immunity to proximity fields from RF wireless communications equipment
IEC 61000-4-3
Levels and modulation defined in table 9
As defined in table 9
RF wireless communications equipment should not be used close to any parts of the WREM.
D-0125127-E 39
Electrical fast
+/- 2 kV for power
transient / burst supply lines
+/- 2 kV for power supply lines
Mains power quality should be that of a typical commercial or hospital environment.
IEC 61000-4-4
+/- 1 kV for input / output lines
+/- 1 kV for input / output lines
Voltage dips, short interruptions, and voltage variations on power supply
lines
IEC 61000-4-11
0% UT (100% dip in UT) for 0.5 cycle, @ 0, 45, 90, 135, 180, 225, 270 and 315°
0% UT (100% dip in UT) for 0.5 cycle, @ 0, 45, 90, 135, 180, 225, 270 and 315°
0% UT (100% dip in UT) for 1 cycle
40% UT (60% dip in UT) for 5 cycles
0% UT (100% dip in UT) for 1 cycle
40% UT (60% dip in UT) for 5 cycles
Mains power quality should be that of a typical commercial or residential environment. If the user of the MedRx WREM requires continued operation during power mains interruptions, it is recommended that the MedRx WREM be powered from an uninterruptable power supply or its battery.
70% UT (30% dip in UT) for 25 cycles
70% UT (30% dip in UT) for 25 cycles
0% UT (100% dip in UT) for 250 cycles
0% UT (100% dip in UT) for 250 cycles
Power
frequency (50/60 Hz) Magnetic field
30 A/m
30 A/m
IEC 61000-4-8
Radiated fields
in close proximity — Immunity test IEC 61000-4-39
9 kHz to 13.56 MHz. Frequency, level and modulation defined in AMD 1: 2020, table 11
As defined in table 11 of AMD 1: 2020
Note: UT is the A.C. mains voltage prior to application of the test level.
Power frequency magnetic fields should be at levels characteristic of a
typical location in a typical commercial or hospital environment.
If the MedRx WREM contains magnetically sensitive components or circuits, the
proximity magnetic fields should be no higher than the test levels specified
in Table 11
D-0125127-E 40
Guidance and manufacturer’s declaration electromagnetic immunity
The MedRx WREM is intended for use in electromagnetic environment specific below. The customer or the user of the MedRx WREM should assure that it is used in such an environment.
Immunity test IEC 60601- test level
Compliance level
Electromagnetic environment – guidance
Conducted RF IEC 61000-4-6
3 Vrms 0.15 – 80 MHz
3 Vrms 0.15 – 80 MHz
6 VRMS (unmodulated) in ISM bands between 0.1580 MHz
6 VRMS (unmodulated) in ISM bands between 0.1580 MHz
Portable and mobile RF communications equipment should be used no closer to any parts of the MedRx WREM, including cables, than the recommended separation distance calculated from the equation applicable to the frequency of the transmitter.
Radiated RF IEC 61000-4-3
3 V/m 80 MHz to 2,7 GHz
Surge IEC 61000-4-5
AC mains ± 0.5, 1 kV
3 V/m 80 MHz to 2,7 GHz
AC mains ± 0.5, 1 kV
NOTE 1 These guidelines may not apply in all situations. Electromagnetic
propagation is affected by absorption and reflection from structures, objects
and people.
a. Field strengths from fixed transmitters, such as base stations for radio
(cellular/cordless) telephones and land mobile radios, amateur radio, AM and
FM radio broadcast and TV broadcast cannot be predicted theoretically with
accuracy. To assess the electromagnetic environment due to fixed RF
transmitters, an electromagnetic site survey should be considered. If the
measured field strength in the location in which the MedRx WREM is used
exceeds the applicable RF compliance level above, the MedRx WREM should be
observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as reorienting or relocating the
MedRx WREM.
D-0125127-E 41
MedRx WREM and MedRx Wireless REM Probe ISED non-interference disclaimer This
device contains license-exempt transmitter(s)/receiver(s) that comply with
Innovation, Science and Economic Development Canada’s license-exempt RSS(s).
Operation is subject to the following two conditions:
(1) This device may not cause interference. (2) This device must accept any
interference, including interference that may cause undesired operation of the
device. This device complies with the Canadian ICES-003 Class B
specifications. CAN ICES-003(B) / NMB-003 (B). L’émetteur/récepteur exempt de
licence contenu dans le présent appareil est conforme aux CNR d’Innovation,
Sciences et Développement économique Canada applicables aux appareils radio
exempts de licence. L’exploitation est autorisée aux deux conditions suivantes
: (1) L’appareil ne doit pas produire de brouillage; (2) L’appareil doit
accepter tout brouillage radioélectrique subi, même si le brouillage est
susceptible d’en compromettre le fonctionnement. Cet appareil numérique de la
Canadian ICES-003. Cet appareil numérique de la classe B est conforme à la
norme NMB-003 du Canada.
MedRx WREM Baseboard ISED RF Exposure statement This equipment complies with
ISED RSS-102 radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with minimum
distance 20 cm (7.6 inches) between the radiator and any part of your body.
This transmitter must not be co-located or operating in conjunction with any
other antenna or transmitter. Cet équipement est conforme aux limites
d’exposition aux radiations ISED CNR-102 établies pour un environnement non
contrôlé. Une distance de séparation d’au moins 20 cm doivent être maintenue
entre l’antenne de cet appareil et toutes les personnes. Lanceurs ou ne
peuvent pas coexister cette antenne ou capteurs avec d’autres.
MedRx Wireless REM Probe ISED SAR exemption statement RF output power is 5 mW
which falls below the ISED SAR exemption limits for a device with a
separation distance of 86 mm from the human body. These exemption limits are
in accordance with ISED RSS-102, Section 2.5.1.
D-0125127-E 42
MedRx WREM and MedRx Wireless REM Probe FCC compliance statement This
equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more
of the following measures:
· Reorient or relocate the receiving antenna. · Increase the separation
between the equipment and receiver. · Connect the equipment into an outlet on
a circuit different from that to which the receiver is connected. · Consult
the dealer or an experienced radio/TV technician for help. This device
complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) this device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that
may cause undesired operation. Please note that changes or modifications not
expressly
approved by the party responsible for compliance could void the user’s
authority to operate the equipment. Changes or modifications not expressly
approved by the party responsible for compliance could void the user’s
authority to operate the equipment.
MedRx WREM FCC RF Exposure Statement This equipment complies with FCC
radiation exposure limits set forth for an uncontrolled environment. This
transmitter must not be co-located or operating in conjunction with any other
antenna or transmitter. In order to avoid the possibility of exceeding the FCC
radio frequency exposure limits, this equipment should be installed and
operated with minimum distance 20 cm (7.6 inches) between the antenna and your
body during normal operation. Users must follow the specific operating
instructions for satisfying RF exposure compliance. MedRx Wireless REM Probe
FCC SAR exemption statement RF output power is 5 mW which falls below the
FCC SAR exemption limits for a device with a separation distance of 86 mm from
the human body. These exemption limits are in accordance with FCC CFR 47
§2.1093.
D-0125127-E 43
MedRx WREM Safety
Regarding electrical safety, this device is designed to be used only by professionals in the hearing healthcare industry.
· It is Class II Medical Electrical (ME) equipment that is part of an ME
system. · This device is not protected from ingress of water. Power is
supplied by an un-
grounded mains power cable to a medical grade power supply and also supplied
by the USB cable connected to a computer. The USB computer power must be able
to supply at least 900mA at the standard USB voltage. · Power is supplied by
the USB cable connected to a computer. · This device is to be operated on non-
conductive surfaces only. · The computer used with this device should conform
to the requirements of IEC 60601-1.
· A MULTIPLE PORTABLE SOCKET-OUTLET or extension cord shall not be connected
to the system.
· The device warm-up time is less than 5 minutes. · Use only the 15 VDC, 2A
medical power supply supplied with your MedRx WREM,
CUI ETMA150200UD-P5P-IC.
· The power supply cable should always be accessible in order to disconnect it
from the supply mains.
· Do not connect items that are not specified as part of the system.
· The use environment should be between 10°C and 35°C
, humidity within
30% to 90%
and an atmospheric pressure range from 80 kPa to 104 kPa.
· Storage temperature range at least from -20°C to 50°C and humidity level from 10%
to 90%.
· All components with patient contact are made of bio-compatible materials.
· This device does not produce any adverse physiological effects.
· Install the device as directed by this manual to achieve optimal use. Clean
accessories per the cleaning instructions prior to use. No Sterilization is
required for components of this device. However, new probe tubes and new foam
inserts are needed for each patient where applicable. Cleaning of the device
and accessories should follow the procedure outlined below.
· The device is not intended to be operated in an environment with
anesthetics, oxygen or NO. It is not an AP or APG device. This ME System is
not intended for use with flammable anesthetics.
· This device uses Type B application parts temporarily placed on the patient
during testing. They are nonconductive and can be immediately withdrawn from
the patient at any time.
· The device is intended for continuous operation. · The computer and the
MedRx device or accessories may be located in the patient
environment if required. · The colored lights are as designated by ANSI S 3.6
and IEC 60645-1, conforming to
the standard color designations for audiology. They signify that either the
left (blue) channel is active or the right (red) channel is active, or no
channel is active (green). The colors do not signify any dangerous or faulty
condition.
· Contact the local MedRx distributor for safe and proper disposal of this
equipment. Proper disposal may require that it be sent to collection
facilities for recovery and recycling.
· All repairs should be sent to MedRx for evaluation and / or repair. However,
necessary diagrams and repair instruction will upon request be provided to
authorized repair personnel.
· There are no known contraindications for the use of this equipment. · The
Instructions for Use (the Installation and Software Training manuals) are
supplied as an electronic copy on a USB flash drive. Paper copies of the
manuals may be also requested from the company, and will be sent within one
business day of the request. · Refer to the Training manual and Help files for
test options and descriptions.
D-0125127-E 44
MedRx WREM Symbols that may be used
Read the instruction manuals for safe usage of the device (operating instructions)
or SN
Indicates that the device serial number will follow
Type B applied part.
Manufacturer (MedRx)
Authorized Representative in Europe
Non-ionizing electromagnetic radiation
Special Disposal Required
Humidity Limitation
Caution, General warning sign
Temperature limitation
Read the instruction manuals for safe usage of the device (operating instructions)
Class II equipment
Start (of action)
Stop (of action)
Percentile Setup
Calibration
Loudspeaker (Speaker)
Headphones
Microphone
Recording
CAUTION For Single Patient Use Only
Handheld microphone (Talkback Microphone)
Medical Device Label
D-0125127-E 45
Avant REM+ EMC Precautions
The Avant REM+ needs special precautions regarding EMC and needs to be
installed and put into service according to the following EMC information.
List of all cables and maximum lengths of cables, transducers and accessories:
Transducer / Accessories
Maximum Cable length
USB Cable
2,0 meters
REM Probe
2,0 meters
All Headsets
2,0 meters
All Speakers
2,0 meters
Warnings!
· The use of accessories, transducers and cables other than those specified,
with the exception of transducers and cables sold by the manufacturer of the
Avant REM as replacement parts for internal components, may result in
increased emissions or decreased immunity of the Avant REM.
· The Avant REM should not be used adjacent to or stacked with other equipment
and if adjacent or stacked use is necessary, the Avant REM should be observed
to verify normal operation in the configuration in which it will be used.
· The Avant REM may be interfered with by other equipment, even if that other
equipment complies with CISPR emission requirements. · The Avant REM does not
have life supporting function · Portable and mobile RF communications
equipment can affect the Avant REM.
D-0125127-E 46
Guidance and manufacturer’s declaration electromagnetic emissions
The Avant REM is intended for use in electromagnetic environment specific below. The customer or the user of the Avant REM should assure that it is used in such an environment.
Emission test
Compliance
Electromagnetic environment guidance
RF emissions CISPR 11
Group 1
The Avant REM uses RF energy only for its internal function. Therefore, its RF emissions are very low and are not likely to cause any interference in nearby electronic equipment.
RF emissions CISPR 11
Class A
Harmonic emissions IEC 61000-3-2
Non applicable
Voltage
fluctuations / flicker emissions IEC 61000-3-3
Non applicable
The Avant REM is suitable for use in all establishments other than domestic and those directly connected to the public lowvoltage power supply network that supplies buildings used for domestic purposes.
Guidance and manufacturer’s declaration electromagnetic immunity
The Avant REM is intended for use in electromagnetic environment specific below. The customer or the user of the Avant REM should assure that it is used in such an environment.
Immunity test IEC 60601 test level
Compliance Electromagnetic
level
environment – guidance
Electrostatic
discharge (ESD)| IEC 61000-4-2
+/- 8 kV contact discharge +/- 2, 4, 8 &15kV
air discharge
+/- 8 kV contact discharge +/- 2, 4, 8 &15kV
air discharge
Floors should be wood, concrete or ceramic tile. If floors are covered with synthetic material, the relative humidity should be at least 30%.
Electrical fast transient / burst IEC 61000-4-4
+/- 2 kV for power supply lines +/- 1 kV for input / output lines
+/- 2 kV for power supply lines +/- 1 kV for input / output lines
Mains power quality should be that of a typical commercial or hospital environment.
Power
NA
frequency
(50/60 Hz)
Magnetic field IEC 61000-4-8
NA
Power frequency
magnetic fields should be
at levels characteristic of
a typical location in a
typical commercial or
hospital environment.
D-0125127-E 47
Guidance and manufacturer’s declaration electromagnetic immunity
The Avant REM is intended for use in electromagnetic environment specific below. The customer or the user of the Avant REM should assure that it is used in such an environment.
Immunity test IEC 60601- test level Compliance level Electromagnetic environment – guidance
Portable and mobile RF communications equipment should be used no closer to any part of the Avant REM, including cables, than the recommended separation distance calculated from the equation applicable to the frequency of the transmitter. Recommended separation distance:
Conducted RF IEC 61000-4-6
0.15 – 80 MHz 3 Vrms & 6Vrms in ISM Band 1 kHz AC Mains
0.15 – 80 MHz 3 Vrms & 6Vrms in ISM Band 1 kHz AC Mains
d = 1,17 × P
Radiated RF IEC 61000-4-3
3 V/m 80 MHz to 2,5 GHz
3 V/m
d = 1,17 × P 80 to 800 MHz d = 2,33 × P 800 MHz to 2,5 GHz
Where P is the maximum output power rating of the transmitter in watts (W)
according to the transmitter manufacturer and d is the recommended separation
distance in meters (m).
Field strengths from fixed RF transmitters, as determined by an
electromagnetic site survey a, should be less than the compliance level in
each frequency range b.
Interference may occur in the vicinity of equipment marked with the following symbol:
NOTE 1 At 80 MHz and 800 MHz, the higher frequency ranges applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.
a. Field strengths from fixed transmitters, such as base stations for radio
(cellular/cordless) telephones and land mobile radios, amateur radio, AM and
FM radio broadcast and TV broadcast cannot be predicted theoretically with
accuracy. To assess the electromagnetic environment due to fixed RF
transmitters, an electromagnetic site survey should be considered. If the
measured field strength in the location in which the Avant REM is used exceeds
the applicable RF compliance level above, the Avant REM should be observed to
verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as reorienting or relocating the Avant REM.
b. Over the frequency range 150 kHz to 80 MHz, field strengths should be less
than 3 V/m.
D-0125127-E 48
Recommended separation distances between
Portable and mobile RF communications equipment and the Avant REM
The Avant REM is intended to use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of the Avant REM can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the Avant REM as recommended below, according to the maximum output power of the communications equipment.
Rated maximum output power of transmitter
W
Separation distance according to frequency of transmitter meters
150 kHz to 80 MHz
80 MHz to 800 MHz
d = 1,17 × P
d = 1,17 × P
800 MHz to 2,5 GHz d = 2,33 × P
0,01
0,12
0,12
0,233
0,1
0,37
0,37
0,74
1
1,17
1,17
2,33
10
3,7
3,7
7,40
100
11,7
11,7
23,3
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in meters (m) can be estimated using the equation applicable to the frequency of the transmitter, where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer.
NOTE 1 At 80 MHz and 800 MHz the separation distance for the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.
A medical grade computer is recommended, conforming to the requirements of IEC 60950-1 and IEC 60601-1-4.
D-0125127-E 49
Avant REM+ Safety
Regarding electrical safety, this device is designed to be used only by
professionals in the hearing healthcare industry.
· It is Class II Medical Electrical (ME) equipment that is part of an ME system.
This device provides Type B protection (Type B equipment, Type B applied part)
· This device is not protected from ingress of water. · Power is supplied by
an un-grounded mains power cable to a medical grade power
supply and also supplied by the USB cable connected to a computer. The USB
computer power must be able to supply at least 500mA at the standard USB
voltage. · A USB Optical Isolator, with a minimum of 1500V AC isolation should
be placed inline between the computer’s USB connection and the MedRx device.
The Optical Isolator should be powered by a power supply that conforms to IEC
60601-1. The computer, Optical Isolator’s power supply and the speaker’s power
supply should be connected to the Medical Grade isolation transformer that
conforms to IEC 606011. Follow the manufacturer’s instructions for
installation and use. All connected equipment provides 2 MOPP per IEC 60601-1.
· This device is to be operated on non-conductive surfaces only. · The
computer used with this device should conform to the requirements of IEC
60601-1.
· A MULTIPLE PORTABLE SOCKET-OUTLET or extension cord shall not be connected
to the system.
· The device warm-up time is less than 5 minutes. · Use only the 15 VDC, 2A
medical power supply supplied with your Avant REM, CUI
ETMA 150200UD-P5P-IC.
· The power supply cable should always be accessible in order to disconnect it
from the supply mains.
· Do not connect items that are not specified as part of the system.
· The use environment should be between 10°C and 35°C
, humidity within
30% to 90%
and an atmospheric pressure range from 80 kPa to 104 kPa.
· Storage temperature range at least from -20°C to 50°C and humidity level from 10%
to 90%.
· All components with patient contact are made of bio-compatible materials. ·
This device does not produce any adverse physiological effects. · Install the
device as directed by this manual to achieve optimal use. Clean accessories
per the cleaning instructions prior to use. No Sterilization is required for
components of this device. However, new probe tubes are needed for each
patient where applicable, and cleaning of the device and accessories should
follow the procedure outlined below. · The device is not intended to be
operated in an environment with anesthetics, oxygen or NO. It is not an AP or
APG device. This ME System is not intended for use with flammable anesthetics.
· This device uses Type B application parts temporarily placed on the patient
during testing. They are nonconductive and can be immediately withdrawn from
the patient at any time. · The device is intended for continuous operation. ·
The computer and the MedRx device or accessories may be located in the patient
environment if required. · The colored lights are as designated by ANSI S 3.6
and IEC 60645-1, conforming to the standard color designations for audiology.
They signify that either the left (blue) channel is active or the right (red)
channel is active, or no channel is active (green). The colors do not signify
any dangerous or faulty condition. · Contact the local MedRx distributor for
safe and proper disposal of this equipment. Proper disposal may require that
it be sent to collection facilities for recovery and recycling. · All repairs
should be sent to MedRx for evaluation and / or repair. However, necessary
diagrams and repair instruction will upon request be provided to authorized
repair personnel. · The Instructions for Use (the Installation and Software
Training manuals) are supplied as an electronic copy on a USB flash drive.
Paper copies of the manuals may be also requested from the company, and will
be sent within one business day of the request. · There are no known
contraindications for the use of this equipment.
D-0125127-E 50
Avant REM+ Symbols That May Be Used
Read the instruction manuals for safe usage of the device (operating instructions)
or SN
Indicates that the device serial number will follow
Type B applied part. (Type B equipment)
Manufacturer (MedRx)
Authorized Representative in Europe
Non-ionizing electromagnetic radiation
Special Disposal Required
Humidity Limitation
Caution, General warning sign
Temperature limitation
Read the instruction manuals for safe usage of the device (operating instructions)
Class II equipment
Start (of action)
Stop (of action)
Percentile Setup
Calibration
Loudspeaker (Speaker)
Headphones
Microphone
Recording
CAUTION For Single Patient Use Only
D-0125127-E 51
Recommended Procedures for Cleaning and Disinfection
1. Probe Tubes are single use components, and should not be re-used by
another patient. 2. It is recommended that 70% Isopropyl Alcohol should be
applied to a soft clean cloth or tissue, not directly on the component to be
cleaned. The
cloth should never be wet, just damp. A mild soapy water solution is an
alternative cleaning liquid. 3. To ensure that cross contamination does not
occur, use clean cloth or sealed Alcohol swabs for each device to be cleaned.
4. Wipe the surfaces of the probe microphone, black ear loop and headphone
pads with the 70% Isopropyl Alcohol. Clean other transducers in the
same way. Do not let 70% Isopropyl Alcohol or water enter the microphone sound
inlet. 5. The probe microphone cords and white device housing may also be
wiped with 70% Isopropyl Alcohol. The speaker controls, headphone ear
pads, head band and other components may be cleaned in a similar way. 6. Let
all components that have been cleaned, thoroughly dry before use. 7. Cleaning
of the computer should be performed using the methods suggested in the
computer’s manual.
D-0125127-E 52
Technical Information
The Avant REM+ is an active, diagnostic Class IIa Medical Device according to
the EU Medical Device Regulation.
Standards: IEC 60601-1:2 Class II IEC 60601-1-2 Class A IEC 60645-1 Medical
Device Regulation
REM Speech+ Standards: ANSI S3.46, IEC 61669, EN 61669
Dimensions: Approx. 16 cm x 12 cm x 3 cm (L x W x H) Approx. 6.5 x 5 x 1.25 (L
x W x H).
Weight: < 500 g < 1 lb
System Modality: Real Ear Measurement; Binaural Live Speech Mapping; Hearing
Loss Simulator; Hearing Instrument Simulator.
Probe Microphones (L/R): Dual Electret Microphone Elements (2 Probe
Microphones)
Probe Microphone Tube: Silicone 1.0 mm Nominal Diameter
Measurement Frequency Range: 125 8000 Hz
Test Stimuli: Broadband Noise and Synthesized Random Noise Pink, White,
Byrne LTASS and ANSI weighted; ICRA; ISTS; Microphone, File, CD-ROM for Live
Speech Mapping, Chirp
Test Stimulus Levels at 1m: 45 90 dB SPL in 1 dB Steps 200 Hz thru 8K Hz
(depending on speaker wattage & efficiency)
Test Stimulus Accuracy: ± 3 dB SPL
Analysis Mode: User Selectable 1/3, 1/6, 1/12, 1/24, 1/48 Octave Bands
ANSI S3.46 Test Available IEC/EN 61669: Real Ear Unaided Response, Real Ear
Unaided Gain; Real Ear Insertion Gain; Real Ear Occluded Response; Real Ear
Occluded Gain; Real Ear Aided Response; Real Ear Aided Gain
Other Test Available: Live Speech Mapping with Peaks and LTASS analysis; Real
Ear to Coupler Difference, Occlusion Effect, Percentile Analysis
Prescription Methods: NAL-RP; 1/3 Gain; 1/2 Gain; Berger; Pogo 1; Pogo 2;
FIG6; DSL m[I/O] NAL-NL1; NAL-NL2
External Connections: Power Connection USB 2.0 Input 5.0 Volt Bus; Line-Output
Jack (Speakers) 3.5 mm Stereo Jack; Speaker Output (Internal Amplifier) (2)
3.81mm Pluggable Spring Clamp; Probe Microphones Inputs (2) 8 Pin Mini-DIN;
Operator Headset Jack 3.5 mm Stereo Jack; Patient Headset Jack 3.5 mm Stereo
Jack; Power Jack 2.1 mm X 5.5 mm.
Communication: Talk forward and talk back
Data Connection: USB
Mode of Operation: Continuous
Warm up Time: Less than 5 min after USB connection
Weight: < 900 g < 2 lb
Power Supply: 100 – 240 V~ 50/60 Hz ±10 % producing 15 VDC USB: 5 VDC
Power Consumption:
Less than 500 mA at 15 VDC / less than 500 mA at 5 VDC
Connection Sockets: Power/Communication Power Speaker left Speaker right
Operator Monitor headphone Left Probe
Right Probe
Patient (Client) headphone Line Level Stereo Speaker Output
Specification USB: (5 VDC) 15 VDC ZA= 4, UA= 8 Veff ZA= 4 , UA= 8 Veff ZA= 32
, UA= 3 Veff
ZI= 1 k , UI= 0.38 500 mVeff ZI= 1 k , UI= 0.38 500 mVeff ZA= 32 , UA= 3
Veff
ZA= 32 , UA= 3 Veff
D-0125127-E 53
The MedRx WREM is an active, diagnostic Class IIa Medical Device according to the EU Medical Device Regulation.
Standards: IEC 60601-1:2 Class II IEC 60601-1-2 Class A IEC 60645-1 Medical
Device Regulation
REM Speech+ Standards: ANSI S3.46, IEC 61669, EN 61669
Dimensions: Approx. 180 mm x 53 mm x 47 mm (L x W x H) Approx. 7 x 2 x 1.5 (L
x W x H).
Weight: < 500 g < 1 lb
System Modality: Real Ear Measurement; Binaural Live Speech Mapping; Hearing
Loss Simulator; Hearing Instrument Simulator.
Probe Microphones (L/R): Dual Electret Microphone Elements (2 Probe
Microphones)
Probe Microphone Tube: Silicone 1.0 mm Nominal Diameter
Measurement Frequency Range: 125 12500 Hz
Test Stimuli: Broadband Noise and Synthesized Random Noise Pink, White,
Byrne LTASS and ANSI weighted; ICRA; ISTS; Microphone, File, CD-ROM for Live
Speech Mapping, Chirp
Test Stimulus Levels at 1m: 45 90 dB SPL in 1 dB Steps 200 Hz thru 12500
Hz (depending on speaker wattage & efficiency)
Test Stimulus Accuracy: ± 3 dB SPL
Analysis Mode: User Selectable 1/3, 1/6, 1/12, 1/24, 1/48 Octave Bands
ANSI S3.46 Test Available IEC/EN 61669: Real Ear Unaided Response, Real Ear
Unaided Gain; Real Ear Insertion Gain; Real Ear Occluded Response; Real Ear
Occluded Gain; Real Ear Aided Response; Real Ear Aided Gain
Other Test Available: Live Speech Mapping with Peaks and LTASS analysis; Real
Ear to Coupler Difference, Occlusion Effect, Percentile Analysis
Prescription Methods: NAL-RP; 1/3 Gain; 1/2 Gain; Berger; Pogo 1; Pogo 2;
FIG6; DSL m[I/O] NAL-NL1; NAL-NL2
External Connections: Power Connection USB 3.0 Input 5.0 Volt Bus; Line-Output
Jack (Speakers) 3.5 mm Stereo Jack; Speaker Output (Internal Amplifier) (2)
3.81mm Pluggable Spring Clamp; Monitor Headset Jack 3.5 mm Stereo Jack; Power
Jack 2.1 mm X 5.5 mm.
Data Connection: USB Mode of Operation: Continuous Warm up Time: Less than 5 min after USB connection Power Connection: USB 3.0 Input 5.0 Volt Bus USB 3.0 Input: Standard USB “C” Socket
Power Consumption:
Less than 1800 mA at 15 VDC / less than 900 mA at 5 VDC
Connection Sockets: Power/Communication Power Int. Speaker Amp Speaker left
Speaker right Operator Monitor headphone Left Probe
Right Probe
Line Level Stereo Speaker Output
Specification USB: 5.0 VDC 15 VDC, 2A
ZA= 4, UA= 8 Veff ZA= 4 , UA= 8 Veff ZA= 32 , UA= 3 Veff
ZI= 1 k , UI= 0.38 500 mVeff ZI= 1 k , UI= 0.38 500 mVeff ZA= 32 , UA= 3
Veff
D-0125127-E 54
Limited Warranty
MedRx, Inc warrants this product to be free from defects in material and
workmanship for one year from the time of purchase. If this system fails to
perform as specified during this period, the purchaser is responsible for
calling MedRx at 888-392-1234 or
727-584-9600. The company’s
representative will advise the owner to either return specific components or
the entire system to: MedRx, Inc. 1200 Starkey Road #105 Largo, FL 33771 USA
MedRx will repair or replace any defective devices, fully test the system
and/or components and ship the system promptly back to the owner. There is no
cost for the repair or return shipping, provided the system is one year old or
less and has not been misused, abused or damaged. Such damage includes, but is
not limited to, dropping, exposure to excessive heat greater than 100ºF and
water/liquid damage. Repair or replacement of the system as provided under
this warranty is the sole and exclusive remedy of the purchaser. MedRx shall
not be liable for any consequential or incidental damages or for breach of any
express or implied warranty. Except to the extent of applicable law, any
implied warranty, merchantability or fitness of this product is limited to the
duration of this warranty. MedRx will, at its discretion, service and repair
out of warranty products at the purchaser’s request, charging for parts and
labor as necessary. The limited warranty is deemed void if software or
hardware is installed on this product which is not pre-approved by MedRx, Inc.
Approved software includes Noah and HIMSA approved hearing aid manufacturer
programming modules for fitting hearing aids. MedRx, Inc. is not responsible
for problems resulting from installation of unapproved software or hardware.
In the event of unapproved software or hardware installed on the system
causing a conflict, MedRx will service the product for a fee to be determined
at the time of service. Any extension of this warranty past the initial one-
year warranty is subject to the following (where applicable).
1. A $300 deductible per repair. 2. Extended warranty does not include
cables, connectors or peripherals.
D-0125127-E 55
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>