LECTROSONICS DSSM-A1B1 Digital Wireless Water Resistant Micro Body Pack Transmitter Instruction Manual

DSSM-A1B1 Digital Wireless Water Resistant Micro Body Pack Transmitter

Specifications

• Model: DSSM
• Type: Digital Wireless Water-Resistant Micro Body Pack Transmitter
• Variants: DSSM-A1B1, DSSM-B1C1, DSSM/E01-A1B1, DSSM/E01-B1C1, DSSM/E07-941
• IP Rating: IP57 (Water and particulate-resistant)
• Power Selections: 10mW, 35mW (D2 compat mode), 2mW (HDM mode)
• Battery: LB-50 rechargeable battery

Overview
The DSSM is a compact, water-resistant body pack transmitter designed for use in theater, TV, film, and broadcast settings where concealment and water resistance are essential. It offers advanced features and performance suitable for various applications.

Features

• Extensive feature set in a compact housing
• Compatible with Lectrosonics digital receivers
• RF power selections for different scenarios
• Accepts mic or line level signals with gain adjustment
• Limiter for handling signal peaks
• Easy menu navigation via membrane switch panel and OLED= display
• Battery status indication with bi-color LED
• Constructed of durable aluminum alloy

Usage Instructions

1. Connect the DSSM to your audio source using the audio input jack.
2. Adjust the gain settings for optimal signal to noise ratio and minimum distortion using the OLED display.
3. Monitor the battery status indicated by the LED.
4. Secure the transmitter using the wire belt clip, adjusting the antenna orientation as needed.
5. For charging, consider using the optional CHSDSSM battery charging station for convenience.

FAQ
What is IP57?
IP ratings indicate how resistant an electrical device is to water and common materials like dirt, dust, and sand. The DSSM’s IP57 rating means it is water resistant up to 1 meter (3.2 feet) for 30 minutes, making it suitable for demanding environments.

Introduction

• The DSSM is the enhanced, fully digital successor to the SSM, while being IP57 rated for moisture and particulate resistence and offering dock charging capability.
• The DSSM is ideal in theater, TV, film and broadcast where concealment is desired and water-resistance is required. The DSSM offers an extensive feature set and performance packed into an exceptionally compact housing, compatible with all current Lectrosonics digital receivers, including the DSR, DSR4, DSQD, DCR822,   M2Ra and DCHR.
• The DSSM includes specially developed, highly efficient circuitry for extended operating time on the rechargeable LB-50 battery. RF power selections are offered at 10 and 35 mW (D2 compat mode) and a special high density (HDM) mode at 2 mW.
• The servo bias input accepts mic or line level signals with a wide range of gain adjustment in 1 dB steps. Accurate indications on the display allow precise gain adjustments to be made for the maximum signal to noise ratio and minimum distortion. The limiter in the preamp can cleanly handle signal peaks over 30 dB above
• full modulation, allowing the input gain to be set high enough to achieve the maximum signal to noise ratio, yet provide protection against input overload.
• The audio input jack is a common miniature 3-pin con-nector with a threaded collar adding additional ruggedness. An IR (infrared) port next to the SMA antenna mount allows transfer of frequency and compatibility mode settings.
• The membrane switch panel and OLED display enable access to all adjustments and settings. The menu structure is easy to navigate. Battery status is indicated by a bi-color LED that is green with a fresh battery, then turns to red as the battery runs down, and finally starts blinking red when there are only a few minutes of runtime remain-ing.
• The housing is constructed of machined aluminum alloy, treated in the conductive, super hard electroless nickel ebENi finish.
• A flexible, repositionable wire belt clip (to orient the an-tenna facing up or down) is included.
• The optional CHSDSSM battery charging station (shown below) provides a convenient and organized means of recharging up to 4 LB-50 batteries or DSSM transmitters in larger systems with numerous batteries in regular use. Each charging module may be daisy-chained to 3

What is IP57?

IP ratings indicate how resis-tant an electrical device is to water and common materials – like dirt, dust and sand.
The DSSM’s IP57 rating indicates that that it is water resistant up to 1 meter (3.2 feet) for 30 minutes – perfect for your most demanding environments.

CAUTION: DO NOT REMOVE the threaded screw where indicated, as that will void the warranty and IP rating.

600MHz Wireless Guard Band and Duplex Gap

You’ll notice that our B1C1 range for North America takes advantage of two sets of spectrum space within the 600 MHz band, as designated by the FCC auction. The 600 MHz band is made up of the following four parts:

• Guard Band (614-617 MHz)
• Downlink Band (617-652 MHz)
• Duplex Gap (652-663 MHz)
• Uplink Band (663-698 MHz)

Wireless devices in North America are limited to the Guard Band (614-617 MHz) and Duplex Gap (652-663 MHz).

The Guard Band consists of

• 614-616 MHz: 2 MHz (unlicensed operators)
• 616-617 MHz: 1 MHz buffer (unavailable for use)

The Duplex Gap consists of:

• 652-653 MHz: 1 MHz buffer (unavailable for use)
• 653-657 MHz: 4 MHz (licensed operators only)
• 657-663 MHz: 6 MHz (unlicensed and WSDs)

Power is limited to 20mW for wireless microphones used in this part of the spectrum.

Battery Installation

The battery compartment and door catch are designed for simple and quick battery changes, yet prevent the door from being opened accidentally. Press both release catches inward to open.

CAUTION: Use only the Lectrosonics LB50 battery and Lectrosonics battery chargers.
WARNING: Risk of fire or explosion if the battery is replaced by an incorrect type.

Insert battery into compartment, contact end first. Line the contacts on the battery up with the contacts on the unit, then press the back end of the battery into compart-ment.

Controls and Functions

Modulation LEDs
Proper input gain adjustment is critical to ensure the best audio quality. Two bicolor LEDs will glow either red or green to accurately indicate modulation levels. The input circuitry includes a wide range DSP controlled limiter to prevent distortion at high input levels.
It is important to set the gain (audio level) high enough to achieve full modulation during louder peaks in the audio. The limiter can handle over 30 dB of level above full modulation, so with an optimum setting, the LEDs will flash red during use. If the LEDs never flash red, the gain is too low. In the table below, +0 dB indicates full modulation. See the Adjusting Input Gain section for additional information.

OLED Screen
The display is a matrix OLED with screens for adjusting various modes and options. The transmitter can be powered up with or without the RF output turned on. A brief press on the power button turns the unit on in a Standby Mode with the output turned off to allow adjustments to be made without interfering with other wireless systems in the vicinity.

BATT LED and Battery Indicator
The battery LED glows green when the battery is good, and the battery icon is solid and steady. The LED color changes to red when there is limited operating time remaining. When the battery is extremely low and the unit is about to turn off, the LED will blink, a few minutes before the unit powers itself down.

The exact point at which the LED turns red will vary with temperature and current drain. The LED is intended to simply catch your attention, not to be an exact indicator of remaining time.
The LED next to the BATT LED (Encryption Status) will glow blue if the unit is transmitting and has a valid encryption key.

MENU/SEL Button
The MENU/SEL button is used to access the MENU tree. The and arrows allow you to scroll through the list. Pressing MENU/SEL again allows you to access that selection’s submenu. Pressing the BACK button returns you to the previous screen.

Power Button
Turns the unit on and off. A brief press turns power on in a Standby Mode to make settings without interfering with other wireless systems in the vicinity. Pressing and holding the button until a bar on the display completes a sequence turns the power on with the RF output turned on. Pressing and holding for the duration of a bar se-quence turns the unit off.

Audio Input Meter
This shows the dB signal level, against a scale of -40 to +0. A small box with the letter “L” will appear at the far right when the audio signal goes into limiting.

UP and DOWN Arrow Buttons

The arrow buttons are used to select the values on the various setup screens and to lock out the control panel.

Encryption Status LCD/LED Indicator Modes

• StandBy: Blue LED is OFF and Operating Mode Indicator icon has a line through it
• Missing/Wrong Key: LED is FLASHING when unit is transmitting, along with <-KEY?-> flashing below the Operating Mode Indicator.
• Transmitting: Blue Light is steadily ON when key is valid.

Turning LEDs ON and OFF (Shortcut)

From the main “home” screen, the arrow keys also turn the LEDs on and off. With no other button pressed, the arrow turns the LEDs on and the arrow turns them off. They can also be turned off or set to constantly stay on via the Set Up menu (see page 15).

Connectors and USB Port
The housing is machined out of solid aluminum alloy for a rugged, lightweight assembly.
The antenna attaches via SMA connector. The IR port is capped with a translucent window to broaden the recep-tion angle. The input jack is a rugged, watertight 3-pin connector with a threaded locking sleeve.

The opposite end of the transmitter contains the bat-tery door latches and release tabs, along with the dock charging contacts.

The battery door has a Gore-Tex® sealed vent to allow air pressure to escape while blocking moisture ingress.

The USB port, which is used for firmware updates, is lo-cated inside the battery compartment. When connected, the unit is powered from the USB source.

Attaching and Removing the Microphone
Align the ridges on the plug with the grooves in the jack and insert the plug.

Slide the threaded sleeve onto the jack and rotate it clockwise to tighten it.

Operating Instructions

Powering On in Operating Mode
Press and hold the Power Button for several seconds while“Hold for RF” appears and a bar indicator on the LCD progresses across the screen, returning to the Main Screen.

When you release the button, the unit will be operational with the RF output turned on and the Main Window displayed.

Powering On in Standby Mode
A brief press of the Power Button , releasing it before the progress bar is complete, will turn the unit on with the RF output turned off. The LCD will display a reminder that the RF output of the transmitter is turned off. Stand- by Mode means no transmission.

In this Standby Mode the frequency can be browsed to make adjustments without the risk of interfering with other wireless systems nearby.
After adjustments are made, press the Power Button again to turn the unit off.

Encryption Key Missing
A blinking <-KEY?-> below next to the Operating Mode Indicator shows that the Encryption Key is missing. Refer to page 14 for instructions on setting the Encryption Key.

The DSSM ships with the key type set as “Universal” and will work right away with any receiver also set to Universal Key Type.

Powering Off
Holding the Power Button in and waiting for the bar counter to decrease fully will turn the power off.

If the power button is released before the countdown is completed, the unit will remain turned on and the LCD will return to the same screen or menu that was dis-played previously.

Setup Steps
The top level menus are accessed by powering the unit on, then pressing MENU/SEL. Refer to the Setup Screens section for details of each setup parameter.
The following list outlines the steps necessary to set up the transmitter for normal use.

1. Install a charged Lectrosonics LB-50 battery or retrieve the charged unit from the charging dock.

2. Set the compatibility mode to match the receiver to be used by pressing MENU/SEL, then scrolling to COMPAT and pressing MENU/SEL again to choose either D2 or HDM.

3.  Adjust the frequency to match the receiver by using IR sync or pressing MENU/SEL, then XMIT, then FREQ. Use the arrow buttons to scroll through the first set of digits, then pressing MENU/ SEL to choose and go to the next set of digits.
   Press MENU/SEL choose.
   The frequency is normally determined using the receiver to identify one within clear operating spectrum. Refer to the receiver instructions for details on using features such as scanning.

4. Connect the microphone or audio source to be used. Select the correct input configuration.

5. Adjust the input gain. Refer to the Adjusting the Input Gain section on the following page for instructions.

6.  Turn on the receiver and verify that solid RF and audio signals are present (see receiver manual).

Locking the Controls

The controls can be locked by going to MENU, then SETUP. Use the arrow buttom to scroll down to Locked? Use the UP and DOWN arrows to choose, then select your choice by pressing MENU/SEL.

NOTE: If the unit is Locked, you will need to unlock it to turn the power off. This setting prevents accidentally turning off the power when in use.

Adjusting the Input Gain

The two bicolor Modulation LEDs on the control panel provide a visual indication of the audio signal level enter-ing the transmitter. The LEDs will glow either red or green to indicate modulation levels as shown in the following table:

NOTE: Full modulation is achieved at 0 dB, when the “-20” LED first turns red. The limiter can cleanly handle peaks up to 30 dB above this point.

It is best to go through the following procedure with the transmitter in the standby mode so that no audio will enter the sound system or recorder during adjustment.

1. With a charged battery in the transmitter, power the unit on.
2. Press the MENU/SEL button, then press MENU/SEL again to choose INPUT. Press once more to choose GAIN.
3. Prepare the signal source. Position a microphone the way it will be used in actual operation and have the user speak or sing at the loudest level that occur during use, or set the output level of the instrument or audio device to the maximum level that will be used.
4. Use the arrow buttons to adjust the gain until the –10 dB glows green and the –20 dB LED starts to flicker red during the loudest peaks in the audio.
5. Once the audio gain has been set, the signal can be sent through the sound system for overall level adjustments, monitor settings, etc.
6. If the audio output level of the receiver is too high or low, use only the controls on the receiver to make adjustments. Unless the microphone or its position changes, or a different instrument is being used, leave the transmitter gain adjustment set according to these instructions. Use the audio output level control on the receiver to make adjustments for the desired level being delivered to the connected mixer, recorder, etc.

Menu Map

Menu Screen Details

Top Menu
From the Home screen, pressing MENU/SEL will access the Top Menu. The Top Menu allows the user to access the various sub-menus to change settings on the unit.

Input Menu
From the TopMenu, use the and arrow buttons to highlight INPUT and press MENU/SEL.

Adjusting the Input Gain
The two bicolor Modulation LEDs on the control panel provide a visual indication of the audio signal level enter-ing the transmitter. The LEDs will glow either red or green to indicate modulation levels as shown in the following table.

NOTE: Full modulation is achieved at 0 dB, when the “-20” LED first turns red. The limiter can cleanly handle peaks up to 30 dB above this point.

It is best to go through the following procedure with the transmitter in the standby mode so that no audio will enter the sound system or recorder during adjustment.

1. With fresh LB50 batteries in the transmitter, power the unit on.

2. Navigate to the Gain setup screen.

3. Prepare the signal source. Position a microphone the way it will be used in actual operation and have the user speak or sing at the loudest level that will occur during use, or set the output level of the in-strument or audio device to the maximum level that will be used.

4. Use the and arrow buttons to adjust the gain until the –10 dB glows green and the –20 dB LED starts to flicker red during the loudest peaks in the audio.

5. Once the audio gain has been set, the signal can be sent through the sound system for overall level adjustments, monitor settings, etc.

6. If the audio output level of the receiver is too high or low, use only the controls on the receiver to make adjustments. Always leave the transmitter gain adjustment set according to these instructions, and do not change it to adjust the audio output level of the receiver.

Selecting the Low Frequency Roll-off

It is possible that the low frequency roll-off point could affect the gain setting, so it’s generally good practice to make this adjustment before adjusting the input gain.

The -3 dB down point for the roll-off can be set to:

• 35 Hz • 100 Hz
• 50 Hz • 120 Hz
• 70 Hz • 150 Hz

The roll-off is often adjusted by ear while monitoring the audio to minimize low frequency noise or rumble while leaving the desired sound unaffected.

Selecting Mic/Audio Input Configuration

Audio input can be selected by using the buttons to select the InpCfg from the Input Menu and pressing MENU/SEL to select your choice.

• Instr • PSA
• COS-11 • Oth Lav
• Line In • DPA
• MKE 2 • D ynamic
• B6 • M152
• Custom

The two types of high levels signals that can be used with the transmitter are:

• Line Used with line level outputs from recorders, mixers and other audio devices.
• Instr: (instrument) A special type of high impedance input with an active preamp for an optimal match with instrument pickups.

The Custom setting allows for configuring of inputs not in the menu:

Use the arrow buttons to scroll through the available choices and use MENU/SEL to choose:

• Instr. (Pos or Neg Polarity)
• Line In (Pos or Neg Polarity)
• MicHiZ (0, 2 or 4V Bias Voltage; Pos or Neg Polarity)
• MicLoZ (0, 2 or 4VBias Voltage; Pos or Neg Polarity)

COS-11

| Phase reversed; use for Sanken Cos-11, M152 and similar mics|

4V

|

MicLowZ

|

Negative

LineIn| For Line Level Input| No Bias| Line In| Positive
MKE2| For Sennheiser MKE2 and similar mics| 4V| MicLowZ| Positive
B6| Countryman B6 and similar mics| 2V| MicLowZ| Positive
PSA| For Point Source Audio and similar mics|

4V

| MicLowZ| Negative
Oth Lav| Same as COS but audio phase not reversed| 4V| MicLowZ| Positive
DPA| For DPA and similar mics| 4V| MicLowZ| Negative
Dynamic| For dynamic mics| No Bias| MicLowZ| Positive

M152

| Same as Oth Lav; for easy selection of Lectrosonics 152 and similar|

4V

|

MicLowZ

|

Positive

Xmit Menu

Use the arrow buttons to select the Transmit Menu from the TopMenu.

Selecting Frequency
The setup screen for frequency selection offers several ways to browse the available frequencies.

Press MENU/SEL and use the arrow buttons to select one of three fields to adjust: MHz, KHz and Group.
Pressing the the and arrows changes values. The MHz frequency will change in 1 MHz steps, the KHz frequency will change in 25 KHz steps.
The GRP field allows selection of one of four user-programmable frequency groups (Groups U through X),
or the choice to not use groups at all. In the programmable frequency groups, up to 32 frequencies can be programmed per group. Refer to the receiver manual for group tuning information.
Use the arrow keys to cycle through the groups. Once the desired group is selected, press the MENU/SEL button to move the cursor back to the operating frequency. If the previously tuned frequency is not in the selected group, the number will flash. Now, use the the and arrow buttons to scroll and select frequencies within the chosen group. These frequency numbers will not flash. Once the desired group frequency is chosen, Press BACK to return to the XMIT menu and once again to return to the home screen.

Setting Transmitter Output Power

Use the arrow buttons to select the Transmit Menu from the TopMenu.
In D2 Compat Mode, the output power can be set to 10 or 35 mW. Use the arrow buttons to scroll between and MENU/SEL to choose. In HDM Compat Mode, the RF power is set to 2 mW.

RF On?
RF transmission can be turned on or off using the arrow buttons.

Compact Menu

Selecting the Compatibility Mode

Use the arrow buttons to select the desired mode, then press the BACK button twice to return to the Main Window. Compatibility modes are as follows:

• Standard Mono Digital D2
• High Density Mode HDM

HDM Mode (High Density Transmission)
This special transmitting mode and associated low RF power of 2mW allows the user to “stack” many units into a very small area of the spectrum. Standard, ETSI-compliant RF carriers take up about 200 kHz of occupied bandwidth, while HDM takes up about half of that, or 100 kHz, and allows for much tighter channel spacing,without concern for frequency coordination.

IR &Key Menu
SendFreq
Press MENU/SEL to send the Frequency to another transmitter or receiver via the IR port.

SendAll
Press MENU/SEL to send information to a paired receiv-er: Frequency, Transmitter Name, and Talkback Enabled to another transmitter or receiver via the IR port.

NOTE: SendAll does not send Encryption Key. This must be done separately.

GetFreq
Press MENU/SEL to get Frequency information from another transmitter or receiver via the IR port.

GetAll
Press MENU/SEL to get information from a paired receiver: Frequency, Transmitter Name, Talkback Enabled, and Compatibility Mode via the IR port.

KeyType
The DSSM receives an encryption key via the IR port from a key generating receiver. Begin by selecting a key type in the receiver and generating a new key (key type is labeled KEY POLICY in the DSQD receiver). Set the matching KEY TYPE in the DSSM and transfer the key from the receiver (SYNC KEY) to the DSSM via the IR ports. A confirmation message will display on the receiver display if the transfer is successful. The transmitted audio will then be encrypted and can only be listened to if the receiver has the matching encryption key.

The DSSM has four options for encryption keys:

• Universal: This is the most convenient and basic option available, and the default setting on all Lectrosonics D2 digital units. All encryption-capa-ble Lectrosonics transmitters and receivers contain the Universal key. A unique key does not have to be generated. Simply set the Lectrosonics encryption-capable transmitters and receivers to the Univer-sal key type, and the encryption is in place. This allows for convenient encryption amongst multiple transmitters and receivers but is not as secure as creating a unique key

• Shared: This key policy is designed for sports coverage and similar applications where a unique key provides enhanced security, but multiple transmitters and receivers can share the same key. Once generated by the receiver, the key can be transferred via IR to transmitters or additional receivers.
  Standard: This key policy provides excellent se curity, second only to the Volatile key policy. Once a unique key is created in the receiver, it can be transferred via IR only to transmitters, but not to other receivers. The receiver tracks the number of times the key is transferred. Once a Standard key has been transferred 256 times, an alert will indicate that a new key must be created.

• Volatile This is the most robust key policy available. After a unique key is created, it can be transferred only to transmitters, not other receivers. If a transmitter is powered off, it must have the key sent to it again from the receiver. If the receiver is powered off, a new key must be generated and sent to the transmitters. In encryption terms, this is the “one time use” key management policy.

WipeKey
This menu item is only available if Key Type is set to Standard, Shared or Volatile. Select Yes to clear the cur-rent key.

SetUp Menu

AutoOn
Press MENU/SEL to toggle the AutoOn feature on or off. When enabled, the transmitter will turn on to Transmit mode when a battery is replaced while the unit is running.

Remote
Press MENU/SEL to toggle the remote “dweedle tone” feature on or off. When enabled, the transmitter will re-spond to tone commands.

Locking/Unlocking Changes to Settings
Changes to the settings can be locked in this menu.

When changes are locked, several controls and actions can still be used:

• Settings can still be unlocked
• Menus can still be browsed
• When locked, POWER CAN ONLY BE TURNED OFF by removing the batteries.

DispOff
Press MENU/SEL to toggle the DisplayOff feature be-tween 5 and 30 seconds after the last time a button is pressed, or set to constantly stay on.

LED Off
From the main menu screen, a quick press of the arrow button turns the control panel LEDs on. A quick press of the arrow button turns them off. The buttons will be disabled if the LOCKED option is selected in the Power Button menu.

Default
Press MENU/SEL to restore the Default (factory) settings.

About
Press MENU/SEL to display the model, the firmware version, the software version and the band/block.

Microphone Wiring

Looking into the 3 pin Lemo mic connector from the out-side of the transmitter, the pin centered in the two guide slots is pin 1 (ground). Pin 2 is a 1k resistor to ground. Pin 3 is the audio/bias connection for two-wire micro-phones and line inputs.

Voltages, polarity, impedance and line level for all signal sources are selected by menus. Menu selections in-clude presets for popular microphones, and a sub-menu for manual setup. Refer to the section entitled Setup Screens on the previous page for details.

Two-wire electret lavaliere:

Pin 1 – Ground (shield)
Pin 3 – Audio and Bias
Sanken COS-11 lavaliere

Recommended Wiring:

1. Pin 1 – Shield (ground)
2. Pin 2 – White (source load)
3. Pin 3 – Black (bias and audio)

NOTE: The COS-11 can also be wired in a two-wire configuration. Contact Plus24/Sanken for details.

The Sanken CUB-01 is not supported.

Line and Instrument
Input Wiring and Use

Pin Configuration:

1. Pin 1: Shield (ground)
2. Pin 2: Audio

Transmitter Settings:

The gain setting can be adjusted as needed for the specific input level used.

Selecting Mic/Audio Input Configuration

Refer to Page 12 for detailed information on configuring Line and Instrument level inputs.

IR Sync
An IR (infrared) link between an associated receiver and the transmitter can be used to shorten setup time and ensure that the correct settings in the transmitter are made. The window on the top panel of the transmitter is the port used for the IR link. The receiver is normally used to identify a clear operating frequency. Once step size, frequency and compatibility mode are set in the receiver, the settings can be sent to the transmitter via this IR link.
Place the transmitter close to the IR-enabled receiver with the ports facing each other a few inches apart. Send the settings with the trigger on the receiver. If the settings are successfully transferred, a confirmation message will appear on the transmitter and receiver displays.

NOTE: If a mismatch exists between the receiver and transmitter, an error message will appear on the units.

Reversible Belt Clip

The belt clip may be removed or reoriented (to point the antenna up or down) by carefully lifting it out and off of the housing, with the battery door open. Pull the one side of the wire out of the grooved hole as shown, then upward to remove. Repeat for the opposite side.

Whip Antennas

Because the transmitter tunes across such a broad frequency range, it is best to use the appropriate antenna for maximum operation. Two antennas are included with the transmitter, and are shipped from the factory pre-cut and fully assembled with a 50 Ohm SMA connector.
Each antenna covers three blocks. Use the chart below to determine which antenna best fits your needs.

Frequency Cap
Band Block Range MHz Color Antenna

A1

| 470| 470.100 – 495.600| Black| AMM19
---|---|---|---|---
19| 486.400 – 511.900| Black| AMM19
20| 512.000 – 537.500| Black| AMM19

B1

| 21| 537.600 – 563.100| Brown| AMM22
22| 563.200 – 588.700| Red| AMM22
23| 588.800 – 614.300| Orange| AMM22

C1

| 24| 614.400 – 639.900| Yellow| AMM24
25| 640.000 – 665.500| Blue| AMM24
26| 665.600 – 691.100| Green| AMM24

C2

| 25| 640.000 – 665.500| Green| AMM24
26| 665.600 – 691.100| Blue| AMM24
27| 691.200 – 716.700| Pink| AMM24
| 941| 941.525-959.825| Black| AMM944

NOTE: 941 units use 944 antennas

LectroRM

By New Endian LLC
LectroRM is a 3rd party mobile application for iOS and Android smart phone operating systems. Its purpose is to make changes to the settings on select Lectrosonics transmitters by delivering encoded audio tones to the microphone attached to the transmitter. When the tone enters the transmitter, it is decoded to make a change to a variety of different settings such as input gain, frequency and a number of others.
The app was released by New Endian, LLC in September 2011. The app is available for download and sells for $25 on the Apple App Store and Google Play Store.
The settings and values that can be changed vary from one transmitter model to another. The complete list of available tones in the app is as follows:

• Input gain
• Frequency
• Sleep Mode
• Panel LOCK/UNLOCK
• RF output power
• Low frequency audio roll-off
• LEDs ON/OFF

The user interface involves selecting the audio sequence related to the desired change. Each version has an inter-face for selecting the desired setting and the desired op-tion for that setting. Each version also has a mechanism to prevent accidental activation of the tone.

iOS

The iPhone version keeps each available setting on a separate page with the list of options for that setting. On iOS, the “Activate” toggle switch must be enabled to show the button which will then activate the tone. The iOS version’s default orientation is upside-down but can be configured to orient right-side up. The purpose for this is to orient the phone’s speaker, which is at the bottom of the device, closer to the transmitter microphone.

Android The Android version keeps all settings on the same page and allows the user to toggle between the activation buttons for each setting. The activation button must be pressed and held to activate the tone. The Android version also allows users to keep a configurable list of full sets of settings.

Remote Control and Activation
Remote control signals (“dweedle tones”) may be used to control the transmitter. The tones are played back into the microphone to avoid the need to reach and handle the transmitter when making changes to the adjustments and settings.
For a transmitter to respond to remote control audio tones, the transmitter must meet certain requirements:

• The transmitter must be turned on.
• The transmitter microphone must be within range.
• The remote control function must be enabled on the transmitter. See page 15.

Please be aware this app is not a Lectrosonics product. It is privately owned and operated by New Endian LLC, www.newendian.com

Firmware Update
Firmware updates are made with Wireless Designer software and a file downloaded from the web site and the DSSM connected via USB.
Firmware files are located at https://lectrosonics.com/firmware.html and Wireless Designer software can be downloaded for Mac or Windows here https://lectrosonics.com/wireless-designer.html
The USB port on the transmitter requires a micro-B male plug on the connecting cable. The other end of the cable would normally be a USB A-Type male connector to fit the most common type of USB jack used on computers. Our part number for this cable is 21926.

1. Step 1:
   Open the DSSM battery compartment and remove the battery. Connect your computer to the DSSM using the USB cable. The transmitter will automatically power on into Update mode

2. Step 2:
   Start Wireless Designer and under the “Connect (Live)” menu, scroll down to Update Firmware, and in the D² sub-menu, click on DSSM.

3. Step 3:
   Follow the on-screen instructions to choose the update file, check to see if an update is needed, and initiate the update process. When finished, unplug the unit, replace the battery, and power on to RF Off mode, and check the firmware version in Setup>About to verify the update.

Supplied Accessories

AMM19
Whip Antenna with Standard SMA Connector. Block 19; included with A1B1 variant only.

AMM22
Whip antenna with Standard SMA Connector. Included with A1B1 and B1C1 variants.

AMM25
Whip antenna with Standard SMA Connector. Included with B1C1 variants only.

AMM944
Whip antenna with Standard SMA Connector. Included with 941 variants only.

Cordura Pouch
P/N 35939 zippered, padded; 4 x 6 x1 inches

Reversible Wire Belt Clip
Belt clip for DSSM; black wire. Reorder with P/N 27332.

Rechargeable battery
P/N 40106-1 LB-50 3.6V lithium-ion battery pack

Optional Accessories

CHSDSSM Dock Charging System
Charger for two Lectrosonics LB-50 batteries; includes charger and short USB cable. Use P/N 40117.
Available with transmitter as a kit. Use P/N ZS-DSSM-A1B1-WITH-CHARGER

DCR5/9AU
AC-DC power supply, for CHSDSSM

SSMCVR
Silicone cover protects from moisture and dust

Specifications

Operating Frequencies

• DDSSM – A1B1 470.100 – 607.950
• DSSM/E01-A1B1: 470.100 – 614.375
• DSSM-B1C1 (US) 537.600 – 607.950
• 614.400 – 615.950
• 653.050 – 662.950
• DSSM/E01-B1C1: 537.600 – 691.175
• DSSM/E07-941: 941.525 – 951.575
• 953.025 – 956.225
• 956.475 – 959.825

Frequency Selection

• Steps: 25 kHz

• RF Power output: Selectable; 10, 35 mW or 2mW (HD mode)

• Compatibility

• Modes: HDM or D2 (all models)

• Frequency Stability: ± 0.002%

• Spurious radiation: Compliant with ETSI EN 300 422-1

• Equivalent input

• noise: –120 dBV (A-weighted)

• Input level: Nominal 2 mV to 300 mV, before limiting. Greater than

• 1V maximum, with limiting.

• Input impedance:
  Mic: 300 or 4.5 k ohm; selectable

• Line: 900 ohm

• Instrument: 1 M ohm

• Input limiter: DSP controlled, dual envelope “soft” limiter with

• greater than 30 dB range

• Gain control range: -7 to +44 dB; digital control, 1 db steps Modulation

• indicators: Dual bicolor LEDs indicate modulation of -20, -10, 0 and +10 dB referenced to full modulation

Audio Performance:

• Frequency Response: 35-20 kHz; 35-15 kHz (HDM compat mode)
• Low frequency
• roll-off: Selectable; 35, 50, 70, 100, 120, 150 Hz
• THD: 0.2% (typical)
• Controls: Front panel membrane switches with OLED interface for power on/off and all setup and configuration controls
• Audio Input Jack: Subminiature; locking 3 pin
• Antenna: SMA connector; coated, flexible wire, length by frequency band
• Battery: Lithium-ion 3.6 V 1000 mAH LB50 battery pack (included)
• Battery Life: 6 hours per charge @ 35 mW
• Weight: 3.5 ounces (100 grams) including lithium battery pack Dimensions
• (housing): 2.59 x 1.9 x .70 in. (66 x 49 x 17 mm) Emission
• Designator: 110KG1E (HD mode); 170KG1E (D2 mode)
• Specifications subject to change without notice.

NOTE: It is the user’s responsibility to select the approved frequencies for the region where the transmitter is operating.

For body worn operation, this transmitter model has been tested and meets the FCC RF exposure guidelines when used with the Lectrosonics accessories supplied or designated for this product. Use of other accessories may not ensure compliance with FCC RF exposure guidelines. Contact Lectrosonics if
you have any questions or need more information about RF exposure using this product..

This device complies with FCC radiation exposure limits as set forth for an uncontrolled environment. This device should be installed and operated so that its antenna(s) are not co-located or operating in conjunction with any other antenna or transmitter.

This device complies with ISED Canada radiation exposure limits as set forth for a controlled “professional” use only.

Troubleshooting

Symptom :

Possible Cause:

Transmitter Battery LED off when Power Switch “ON”

1. Batteries are inserted incorrectly.
2. Batteries are low or dead.

No Transmitter Modulation LEDs when Signal Should be Present

1. Gain control turned all the way down.
2. Batteries are inserted incorrectly. Check power LED.
3.  Mic capsule is damaged or malfunctioning.
4. . Mic cable damaged or miswired.
5. Instrument Cable damaged or not plugged in.
6. Musical instrument output level set too low.

Receiver Indicates RF But No Audio

1. Audio source or cable connected to transmitter is defective. Try using an alternate source or cable.
2. Make sure the compatibility mode is the same on transmitter and receiver.
3. Ensure musical instrument volume control is not set to minimum.
4. Check for correct encryption key type is selected.

Receiver RF Indicator Off

1. Ensure that the transmitter and receiver are set to the same frequency.
2. Transmitter not turned on, or battery is dead.
3. Receiver antenna missing or improperly positioned.
4. perating distance is too great.
5. Transmitter may be set to the Standby Mode. See page 8.

Indicates Proper Audio Modulation

1. Receiver output level set too low.
2. Receiver output is disconnected; cable is defective or miswired.
3. Sound system or recorder input is turned down or not enabled.

Distorted Sound

1. Transmitter gain (audio level) is too high. Check Modulation LEDs on transmitter and receiver while distortion is being heard.
2.  Receiver output level may be mismatched with the sound system or recorder input. Adjust output level on receiver to the correct level for the recorder, mixer or sound system.
3. RF interference. Reset both transmitter and receiver to a clear channel. Use scanning function on receiver if available.
4. ransmitter is at the edge of the useable range for that frequency.

Wind Noise or Breath “Pops’”

1. Reposition microphone, or use a larger windscreen, or both.
2. Omni-directional mics produce less wind noise and breath pops than directional types.

Hiss and Noise — Audible Dropouts

1. Receiver antenna missing or obstructed.
2. Operating distance too great.
3. RF interference. Reset both transmitter and receiver to a clear channel. Use scanning function on receiver if available.
4. Microphone capsule picking up RF noise.

Excessive Feedback (With Microphone)

1. Transmitter gain (audio level) too high. Check gain adjustment and/or reduce receiver output level.
2. Microphone too close to speaker system.
3. . Microphone is too far from user’s mouth.

Service and Repair
If your system malfunctions, you should attempt to correct or isolate the trouble before concluding that the equip-ment needs repair. Make sure you have followed the setup procedure and operating instructions. Check the inter- connecting cables.

We strongly recommend that you do not try to repair the equipment yourself and do not have the local repair shop attempt anything other than the simplest repair. If the repair is more complicated than a broken wire or loose connec- tion, send the unit to the factory for repair and service. Don’t attempt to adjust any controls inside the units. Once set at the factory, the various controls and trimmers do not drift with age or vibration and never require readjustment. There are no adjustments inside that will make a malfunctioning unit start working.
LECTROSONICS’ Service Department is equipped and staffed to quickly repair your equipment. In-warranty repairs are made at no charge in accordance with the terms of the warranty. Out-of-warranty repairs are charged at a mod-est flat rate plus parts and shipping. Since it takes almost as much time and effort to determine what is wrong as it does to make the repair, there is a charge for an exact quotation. We will be happy to quote approximate charges by phone for out-of-warranty repairs.

Returning Units for Repair
For timely service, please follow the steps below:

• DO NOT return equipment to the factory for repair without first contacting us by email or by phone. We need to know the nature of the problem, the model number and the serial number of the equipment. We also need a phone number where you can be reached 8 A.M. to 4 P.M. (U.S. Mountain Standard Time).
• After receiving your request, we will issue you a return authorization number (R.A.). This number will help speed your repair through our receiving and repair departments. The return authorization number must be clearly shown on the outside of the shipping container.
• Pack the equipment carefully and ship to us, shipping costs prepaid. If necessary, we can provide you with the proper packing materials. UPS or FEDEX is usually the best way to ship the units. Heavy units should be “double-boxed” for safe transport.
• We also strongly recommend that you insure the equipment, since we cannot be responsible for loss of or damage to equipment that you ship. Of course, we insure the equipment when we ship it back to you.

Lectrosonics USA:

• Mailing address: Shipping address: Telephone:
• Lectrosonics, Inc. Lectrosonics, Inc. +1 505-892-4501
• PO Box 15900 561 Laser Rd., Suite 102 800-821-1121 Toll-free US/Canada
• Rio Rancho, NM 87174 Rio Rancho, NM 87124 Fax +1 505-892-6243

USA USA
Web: E-mail: www.lectrosonics.com service.repair@lectrosonics.com sales@lectrosonics.com

Lectrosonics Canada:

• Mailing Address: Telephone: E-mail:
• 720 Spadina Avenue, +1 416-596-2202 Sales: colinb@lectrosonics.com
• Suite 600 877-753-2876 Toll-free Canada Service: joeb@lectrosonics.com
• Toronto, Ontario M5S 2T9 (877) 7LECTRO
• Fax 416-596-6648

Self-Help Options for Non-Urgent Concerns

• Our Facebook groups and weblists are a wealth of knowledge for user questions and information. Refer to:
• Lectrosonics General Facebook Group: https://www.facebook.com/groups/6951101569
• D Squared, Venue 2 and Wireless Designer Group: https://www.facebook.com/groups/104052953321109
• The Wire Lists: https://lectrosonics.com/the-wire-lists.html

LIMITED ONE-YEAR WARRANTY

The equipment is warranted for one year from date of purchase against defects in materials or workmanship provided it was purchased from an authorized dealer. This warranty does not cover equipment which has been abused or damaged by careless handling or shipping. This warranty does not apply to used or demonstrator equipment.
Should any defect develop, Lectrosonics, Inc. will, at our option, repair or replace any defective parts without charge for either parts or labor. If Lectrosonics, Inc. cannot correct the defect in your equipment, it will be replaced at no charge with a similar new item. Lectrosonics, Inc. will pay for the cost of returning your equipment to you.
This warranty applies only to items returned to Lectrosonics, Inc. or an authorized dealer, shipping costs prepaid, within one year from the date of purchase.
This Limited Warranty is governed by the laws of the State of New Mexico. It states the entire liablility of Lectrosonics Inc. and the entire remedy of the purchaser for any breach of warranty as outlined above. NEITHER ELECTRONICS, INC. NOR ANYONE INVOLVED IN THE PRODUCTION OR DELIVERY OF THE EQUIPMENT SHALL BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, CONSEQUENTIAL, OR INCIDENTAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THIS EQUIPMENT EVEN IF ELECTRONICS, INC. HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO EVENT SHALL THE LIABILITY OF LECTROSONICS, INC. EXCEED THE PURCHASE

PRICE OF ANY DEFECTIVE EQUIPMENT.
This warranty gives you specific legal rights. You may have additional legal rights which vary from state to state.

581 Laser Road NE • Rio Rancho, NM 87124 USA • www.lectrosonics.com 505-892-4501 • 800-821-1121 • fax 505-892-6243 • sales@lectrosonics.com

References

• Wireless Designer
• Lectrosonics: Quality wireless microphone, encrypted digital wireless and DSP audio processing systems
• New Endian
• The Wire-Lists

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