Toronto, Canada ¨C GAO Tek Inc. is pleased to announce its new optical device, Handle OTDR (optical time domain reflectometer) DS3620

Handle OTDR DS3620 is a new high tech instrument developed and released to the public this year. It has the ability to show the length, attenuation coefficient, connection point, fault point and loss distribution curves of the fiber, as well as, loss between two points, splice loss, and return loss. Even though it has multiple functions and features, the DS3620 is small in size, its easy to use, and its designed to be durable even for outdoor operations. It is now widely used in loss characteristics analysis and fault point searching in fiber manufacture, installation and maintenance. Handle OTDR is compatible with CATV, ISP and Telecommunications Fiber Networks.

Handle OTDR DS3620 Key Features:

• Portable design, convenient for outdoor testing
• Simple operation menu and user friendly
• Supports two markers combined
• Supports zooming in and out for curve details
• Knob design for easy operation
• Automatically searches fault points and creates a list
• More memory for test data
• Rapid response time - able to finish 50km fiber measurement in 30s with high S/N
• Large battery capacity, working time is over 12 hours
• Reliable and durable


Handle OTDR DS3620: Main specifications

• Pulse Widths: 10ns~10¦Ìs.
• Wavelengths: 1310nm¡À20nm, 1550nm¡À20nm
• Accuracy of Distance Measurement: ¡À1m+reading*0.07%(not considered in error of refractive index)
• Dynamic Range: max 26dB
• Measurement Range: 70km
• Event Dead Zone: <5m
• ATT Dead Zone: <25m
• Loss Readout Resolution: 0.01dB
• testing time: <30s
• Display: 320 x 240 5" LCD
• Optical Connector Style: FC/PC
• Power Supply: AC/DC adapter(AC:90V-265V, 50Hz/60Hz), Internal Li-battery, operating time more than 12 hours, and supports 150 curves saved at most
• Dimensions: About 265mm x 158 mm x 80 mm
• Weight: About 1.8kg


Toolbox is computer assisted analysis software provided with the DS3620 for data management and analysis.

1. Helps user download and save test data quickly with increased capacity.
2. Friendly operating interface makes it more conveniently for users to observe details of the testing curve, system settings and event information.
3. Supports up to 6 different test result comparisons at the same time; any single result is also available to observe.
4. Prints professional OTDR test reports and event analysis lists in standard style.
5. Facilitates user comments and history records.
6. Print screen function allows the user to review test image on PC.

About GAOTek Inc.
GAO Tek Inc., a member of GAO Group, is a leading provider of embedded development tools, telecommunication testers, electronic measurement instruments, video surveillance, alarm and other electronic products that serve the needs of electronic professionals internationally. For further information, please visit http://www.GAOTek.com.