
RM7 High-End OTDR
The most advanced OTDR tester with powerful testing features for fiber optic link troubleshooting
Highlights

- With a dynamic range of up to 50/48 dB, it effortlessly handles long-distance, high-loss link testing, covering all scenarios from access networks to backbone networks.
- OPM, VFL, and Laser Distance Meter modules can work independently, adapting easily to various field needs.
- Event dead zone as small as 0.6 m and resolution up to 0.05 m ensure accurate fault location.
- A 10.1-inch touchscreen with a smooth interface offers easy, intuitive control.
- Built-in intelligent diagnosis and IOLA improve efficiency and accuracy.
- With Nano SIM, WiFi, Bluetooth, and GPS, it supports remote data transfer and real-time positioning. Optional PC software enables data storage, report creation, and team collaboration.
- OPM, VFL, OLS
- Fiber microscope
- Optical loss test
- Multi-wavelength and online testing
- Event map
- Optical link analysis
The TFN RM7 is a high-precision, wide-dynamic-range optical time-domain reflectometer designed for high-end fiber optic testing scenarios, integrating multiple functions into a single unit. It is suitable for installation and maintenance in complex network environments such as core networks, metropolitan area networks, and access networks.
Specifications
| Model / Item | RM7-S3 | RM7-S4 | RM7-S5 | RM7-M1 | RM7-C1 | RM7-SM1 | ||
| Wavelength(nm) | 1310/1550 | 1310/1550 | 1310/1550 | 850/1300 | 1310/1550/1625 | 850/1300/1310/1550 | ||
| Dynamic Range(dB) | 42/40 | 45/43 | 50/48 | 26/32 | 44/42/40 | 26/32/40/38 | ||
| Event Dead Zone(m) | 0.6 | 0.6 | 0.6 | 1 | 0.6 | 0.6 | ||
| Attenuation Dead Zone(m) | 2.5 | 2.5 | 2.5 | 4 | 2.5 | 2.5 | ||
| Test Range | 100m/500m/1.25km/2.5km/5km/10km/20km/40km/80km/150km/200km/330km | |||||||
| Distance Accuracy | ±(0.8m+ sampling interval + 0.005%*test distance) | |||||||
| OPM | -50dB ~+30dB | |||||||
| Battery | Standby time over 15 hours | |||||||
| Weight | 1.8KG | |||||||
Use Cases: Core Network/Metropolitan Area Network Optical Cable Acceptance and Maintenance
Fiber-to-the-Home (FTTH) High-Quality Deployment and Troubleshooting
Data Center Optical Link Performance Evaluation and Diagnostics
Long-Distance Trunk Optical Cable Monitoring and Emergency Repair
Telecommunications Engineering Instruction and Advanced Skills Training
Product Demo

OTDR
The OTDR features flexible setup options, including launch and end fiber configurations. It supports customizable PASS/FAIL thresholds, visually distinguishes event qualifications, generates detailed PDF reports, and allows comparison of multiple SOR curves with advanced analysis methods like the four-point and LSA methods.
OLAS
The OLAS (Optical Link Analysis System) integrates advanced algorithms and multi-pulse testing technology to automatically identify and analyze the entire fiber link in a single test. It provides an intuitive graphical link map showing connectors, splices, splitters, and fiber ends, while automatically evaluating link loss, reflectance, and overall performance. With OLAS, users no longer need to manually set complicated parameters—results are generated automatically with clear Pass/Fail indicators, greatly improving testing efficiency and accuracy.

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 RM7 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?
We support online training, also have complete English user manual to help you use.