MN3 Mini OTDR

Perfect choice for FTTH

Highlights

A 3.5 in LCD touch screen and full-function buttons make it easy to use
Wavelength: 1310nm/1550nm. Dynamic Range: 28/26dB
A minimum test blind zone of 1m
Integrates OTDR, Optical Power Meter (OPM), Visual Fault Locator (VFL), Optical Light Source (OLS), and RJ45 network cable testing — all in one compact device.
Weighing less than 1 kg, the device is compact and highly portable. High-capacity battery provides up to 12 hours of continuous work.
Features auto-diagnosis of test results for improved data reliability.
Supports one-click automatic testing and real-time measurement modes, making operation simple and efficient.
Supports USB, MiniUSB, and Ethernet interfaces, enabling connection to devices such as USB flash drives, printers, and PCs.

OPM, VFL, OLS
Fault location
Optical loss test
Event Map (optical eye)

The mini OTDRs supports remote control and multi-interface expansion, and is particularly suitable for fiber patch cord testing and FTTH link maintenance. It serves as the ideal testing companion for field engineers.

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Specifications

Model / Items	MN3
Wavelength	1310/1550 nm
Dynamic Range	28/26 dB
Event Dead Zone(m)	1 m
Attenuation Dead Zone(m)	8 m
Test Range	500m, 1km, 2km, 4km, 8km, 16km, 32km, 64km, 100km
Distance Accuracy	±(1 m+ sampling interval + 0.005%*test distance)
Optical Connector	FC/PC （interchangeable SC, ST）
OPM	-70dBm to +26dBm
Battery	6300mAh. Standby time over 12 hours
Weight	1 KG

Use Cases

FTTH Network Construction and Acceptance

Fiber Patch Cord and Patch Panel Testing and Maintenance

Optical Cable Fault Location and Link Diagnostic

Data Center Optical Communication Equipment Commissioning

Instructional Training and On-Site Practical Training

The TFN MINI OTDR offers core advantages of lightweight design, high-precision testing, and intelligent operation, making it particularly suitable for maintenance personnel who frequently work outdoors and demand high portability and ease of use. Whether testing short-distance patch cords or maintaining long-distance backbone cables, the MINI OTDR series delivers reliable and efficient testing support, helping users boost productivity and reduce operational costs.

Product Demo

Real Experiences with the TFN OTDR

Eric H.

“Very easy to use. I’ve been a loyal customer of TFN for years. The technical support is nice, and the products are always reliable. it makes troubleshooting much quicker. Great value for the price.”

Scott N.

“I recently purchased an otdr tester, and I couldn’t be excited with my purchase. Compact and fast, it has become our go-to tool for fiber optic testing. The results are very accurate”

FAQs

Which languages does MN3 support?

Our OTDR support English for standard version, and the optional version supports Russian, Spanish, and Arabic.

What’s the lead time?

For our standard products, if there are in stock and ready for shipment, the lead time is about 7-10 days. For our optional products, the lead time is about 25-30 days.

Do you support online training?

Yes, we support online training. We also have English operation videos for F7 OTDR (on our YouTube channel) and analysis software for our clients.