Pro sKit MT-7610 Optical Time Domain Reflectometer User Guide

MT-7610
Optical Time Domain Reflectometer
USER’S GUIDE

Pro sKit MT-7610 Optical Time Domain Reflectometer

WARNING
You are cautioned that changes or modifications not espressly  approved in this document could void yout authority to operate this equipment.
To reduce the risk of fire or electric shock,do not expose this apparatus to rain or moisture.
DANGER
VISIBLE LASER RADIATION AVOD EYE OR SKIN EXPOSURE TO DIRECT OR SCATTERED RADIATION SEMICONDUCTOR LASER Wavelength:635-650nm
DANGER
INVISIBLE LASER RADIATION AVOD EYE OR SKIN EXPOSURE TO DIRECT OR SCATTERED RADIATION SEMICONDUCTOR LASER Wavelength:800-1700nm CLASS I LASER PRODUCT
apparatus to rain or moisture.
To avoid electrical shock, do not open the cabinet. Refer servicing to qualified personnel only.
NOTE
As the laser is harmful to the eyes, do not attempt to disassemble the cabinet.
Precautions for Use
Use batteries
At the same time, can not use different style or different capacitance batteries. And only charge the rechargeable batteries.
Avoiding condensation problems As much as possible, avoid sudden temperature changes. Do not attempt to use the drive immediately after moving it from a cold to a warm location, to raising the room temperature suddenly, as condensation may form with in the drive. If the temperature changes suddenly while using the drive,
Stop using it and take out batteries for at least an hour.
Storage
When long time no use, must take out the batteries to avoid destroying the device.
Due to technology improvement, product specifications are subject to change without notice.

Standard

Description

On/off

Button is used to turn on/off the device. Keep pressing it for 2 seconds to turn on device. Short press it again to turn off the device Press  button to SCAN start measuring. But user should modify measurement setting by real requirement before test start.

Measurement Interface

There are 10×10 grids in waveform region.
Horizontal grids mean distance, vertical grids mean dB value. As shown in figure, each horizontal grid represents 2.0km, each vertical grid represents 5dB.

Real-time and average measurement

Real-time measurement can quickly judge basic faults of optical fiber. Press button to start real-time measuring. During measuring, you can change REAL range, zoom in or zoom out . Press button again to stop. The device REAL will not analyses event after real-time measurement in default. Unless you turn on RT analyse in System settings, the device will analyse events according to the last refreshed waveform.
Average measurement can judge the line condition more accurate. It can get a better SNR and fits high requirement circuit. Press button to start. User can SCAN set measurement time from 5 second to 180 second. The device analyses events and generates event list automatically. Press button during measuring, device SCAN will stop measuring, analyses events and generates event list automatically.

| No.| Dis.| Loss| Ref.| dB/km| C.Loss
---|---|---|---|---|---|---
| 3-Feb| 10.057| 2.65| -36.08| 0.18| 1.81

Event list on main interface
Event list
After measurement or open a waveform in memory, there is event list on the bottom of waveform interface. Press button to show the whole event list.Five types of events as followed:

|  Optic fiber start
---|---
Reflection event
Attenuation event
Gain event
optic fiber ending

Press Up or Down button to select an event which needs to be located by cursor on the waveform. Then press button to return to waveform interface. The cursor will stay on the position of the selected event. Press button to return to waveform interface.
Real-time measurement tips

The device supports user to change measurement range during real-time measurement. Start Real-time measuring function and press Up or Down button to increase or decrease the range. And it also supports to change the cursor position and zoom in/out waveform in realtime, which means you can zoom in partial waveform while measuring to judge the network fault.

Cursor selection and waveform zoom in/out

This device has two cursors, A and B.
Default distance is 0m, activated cursor turned to bright black. Press Marker button switch to another cursor. Press Left or Right button to move cursor. Press Up or Down button to previous or next event. You can calculate the distance and attenuation between two cursors.

Keep pressing , then press and Up/Down button to zoom in or out waveform vertically. Keep pressing , then press Left/Right button to zoom in or out horizontally. Press button to return to full screen display. Notice: the focus of zooming is the location of the activated cursor.

There are five pages of menu which used to configure parameters. Under waveform interface, press button to switch the five menus cyclically.
The five menus are:

1. File menu
2. Measure settings menu
3. System settings menu
4. Module settings menu
5. About

Menu-File menu

When the file menu opens,you will see the folders.
The folder name is the date of the file saved, which is generated automatically by system. Files measured in the same day will be stored in the same folder. Folder can be deleted and renamed .
Press Up or Down button to select a folder and press button to open delete or rename tip. Then press button to finish deleting, or press button to cancel.When the delete or rename tip opens , press down butto to select rename,and press putton to enter the soft keyboard and rename it,or press button to cancel.
Files will displays after the folder,press Up or Down button to select one file and press button can delete or rename the file,press button to open the waveform thumbnail. Filename can make up of 23 digits, alphabets and special symbols at most. The last four numbers_xxxx is generated by “Automatic naming”function. Shut down this function will not generate.

When finish measuring an optic fiber, press button to enter storage interface.
Default filename is hour/minute/second of first time storage. Press Up/Down/Left/Right button to select alphabets, digits and symbols on soft keyboard. You can input 23 alphabets at most. If “Automatic naming” is enabled, the filename will automatically generated with four digits. Without shutting down the device, the following stored file’s name will automatically plus 1. The file format is .SOR.  On file recalling interface, press Right button can Modify filename, as the same operations above.

Menu-Measure settings

Measure settings menu is used to set relative measurement data, which The judgment of events list is based on. Wrong setting might leads to wrong or missing events.
Wavelength—wavelength of laser.
Scan mode—Manual and auto mode. Under auto mode, it will match the Distance, range and pulse width .
Range—match with the length of measured optic fiber, usually over one level.
Pulse width—set the pulse width of output laser. Usually, small pulse width can measure close event, large pulse width can measure remote distance,but enlarge event’s blind area. Average time—can set between 5 second and 180 second as average measurement time. Splice loss—treat as an event when the loss is higher than setting value.
Reflection threshold—treat as an event when the reflection is higher than setting value.
End threshold—treat as the end of optic fiber when the loss is higher than setting value.
Reflective rate—represent the average refractive index of entire optic fiber.
Scatter coefficient— the intrinsic value of Rayleigh Scattering.
Optical detector—set whether to check light input in the fiber before measurement or not.
Real time analyse—set whether to analyses events after real time measuring or not.

Common
Language—set the current display language.
Voice—set whether to open or not.
Backlight—set brightness of LCD,settings range from 10 to 100.
Auto shutdown—set time of automatic off or cancel this function.
Auto name—name automatically when file is saving, can cancel this function.
Date form at—set the display order of year,month and day.
Time form at—switching between 24-hour system and 12-hour system.
Date setting— set year, month, day.
Time setting—set hour, minute.

Storage
Default storage device information—view the current TF card information.
Format default storage device—delete all files in the current
TF card.
USB connection—connect USB status to view TF card or internal storage file.
OTG—connect USB status settings to view TF card files or not.
Administration
Hardware module information—when installing the optional module,you can set whether the module is open or not.
Software module information—when installing the optional module,you can set whether the module is open or not.
Self-examination—testable connection of optional modules.
Other
Restore factory settings—is used in resetting to default ,
and has no effect on the set time and stored data.

Module settings menu is used to set the Visual Fault Laser, Optical
Power Meter and wavelength(only VFL function for this model).
VFL— cyclically control the red laser Open — Blink — Close.
OPM( Optional) — used as an ordinary optical power meter, detect range is from -60dBm to +3dBm, press Enter button to set the OPM function On or Off, display dBm and mw values. There are six calibration wavelengths: 850/1300/1310/1490/1550/1625nm.

This menu is version details about device’s configuration of hardware and software. CPU number is used to generate upgrading code, which should inform distributor or factory before software upgrading.

TF card and USB communication

When TF card installed,all measured waveforms are stored in TF card,and when TF card is not installed,they are stored in the instrument internal storage.Using micro USB cable can store data to PC, select Menu-System settings-Storage-USB connection PC will show a new disk icon, data inside(TF card is not installed).When there is no card reader and the date on TF card needs to be stored to PC, using micro USB cable can store data to PC,turn on the Menu-System settings-Storage -OTG function PC will show a new disk icon, data inside.According to filename, user can store or recall files.

User upgrading

When device needs upgrading, user does not need to send it back to factory. Prepare materials before upgrading as followed:

1. CPU ID
2. TF(micro SD) card
   Inform the CPU ID to distributor or factory, you can get upgrading firmware only for your device. Store the firmware to TF card through computer. Insert TF card to device when it is power off. Press and button and hold them, then press button to turn on the device, upgrading is starting. You can delete upgrading file in TF card when finish upgrading.

Charging

This device has lithium batteries inside, and can only use the power adapter from factory to charge it. Insert the adapter to device.
Red charge indicator means charging, while green means finish.

Detail parameters

| MT-7610A-T| MT-76I0A| I MT-7610F| I MT-7610G
---|---|---|---|---
Optical fiber type| SM optical fiber
Dynamic range| 24dB(1310nm)/22d13(1550nm)
Wavelength| 1310nm±20nm, 1550nm±20nm
Optical fiber connector| SC/PC (FC/PC, ST/PC Optional)| I FC/PC (SC/PC. ST/PC Optional)
Display| 3.5 inch color LCD
Display resolution| 320×240
Distance range (km)| 0.1-100
Distance uncertainty (m)| ±(0.8 + 0.005%*distance+ Sampling resolution)
Pulse width| 5ns —10us
Measurement time| 5s-180s
Attenuation blind area| 8m(@minimum plus width)
Event blind area| 3m(@minimum plus width)
Loss threshold (dB)| 0.05dB
Loss resolution (dB)| 0.01dB
Sampling resolution (m)| 0.32
Sampling points| Up to 8000
Typical real-time refresh(Hz)| 2
data storage| Built-in storage 32MB,support external TFcard storage,maximum 32GB
communication connector| Micro USB

Detail parameters

| MT-7610A-T| MT-7610A| I MT-7610F| I MT-7610G
---|---|---|---|---
VFL power| ImW1650nm±20nm)
Connector| FC/PC 2.5mm UPP
Power Source| Lithium Polymer battery 7.4v3100mAh
Battery worktime| standby> 1 5hours, mesurement>8 hours
Power supply| adapter: INPUT AC 100-24050/60Hz; OUTPUT: DC 12V/2.0A
Plug type| | |
Auto power Off| Yes
Low Battery Warning| Low battery energy
Operation Voice Prompts| Yes
Back Light| Yes
Body Protection| Yes
Operation Temperature| 0— +50°C; <90%RH
Storage Temperature| -20— +70°C; <90%RH
Size| 195 110 60mm
Weight| 600g
Individual packing| Color box
Language| Traditional Chinese| English| I Simplified Chinese

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PROKIT’S INDUSTRIES CO.,LTD
http://www.prokits.com.tw
Email:pk@mail.prokits.com.tw
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Documents / Resources

| Pro sKit MT-7610 Optical Time Domain Reflectometer [pdf] User Guide
MT-7610, Optical Time Domain Reflectometer, Domain Reflectometer, Optical Time Reflectometer, Reflectometer, MT-7610 Reflectometer
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