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TFN offers a high-performance multi-function OTDR for fast and accurate optical fiber testing. Rich configuration function modules such as dual-wavelength, three-wavelength (for active fiber online test), four-wavelength, and single-mode and multi-mode integration.
| Model / Item | F7-S1 | F7-S3 | F7-S4 | F7-M1 | F7-SM1 | F7-T1 | F7-T2 | F7-T3 |
| Wavelength(nm) | 1310/1550 | 1310/1550 | 1310/1550 | 850/1300 | 850/1300/1310/1550 | 1310/1490/1550 | 1310/1550/1625 | 1310/1550/1650 |
| Dynamic Range(dB) | 35/33 | 42/40 | 45/43 | 26/28 | 26/28/35/33 | 38/36/36 | 38/36/36 | 38/36/36 |
| Event Dead Zone(m) | 1 | 0.8 | 0.8 | 1 | 1 | 0.8 | 0.8 | 0.8 |
| Attenuation Dead Zone(m) | 5 | 4 | 4 | 5 | 5 | 4 | 4 | 4 |
| Test Range | 500m/1.25km/2.5km/5km/10km/20km/40km/80km/125km/250km/420km | |||||||
| Pulse Width | 3ns/5ns/10ns/20ns/30ns/50ns/80ns/100ns/200ns/300ns/500ns/800ns/1us/2us/3us/5us/8us/10us/20us | |||||||
| Distance Accuracy | ±(0.75m+ sampling interval + 0.005%*test distance) | |||||||
| Optical Connector | FC/PC (interchangeable SC, ST) | |||||||
| OPM | -50dB ~+26dB | |||||||
| Battery | 15600mAh. Standby time over 10 hours | |||||||
| Weight | 1.7KG | |||||||
Applications: communication operator, optical cable producer, and electric power/railway/highspeed network

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.
The F7 OTDR features a powerful event map that supports macro bend fault analysis and identifies different types of macro bend events. It provides PASS/FAIL threshold judgment with flexible threshold customization, and distinguishes qualified and unqualified events with intuitive visual indicators. The system can auto-generate test reports that include curve traces, event lists, and other details.

“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.”
“I recently purchased a F7-S4 otdr tester, and I couldn’t be excited with my purchase. Compact and fast, the F7 has become our go-to tool for fiber optic testing. The results are very accurate”
Our F7 OTDR support English for standard version, and the optional version supports Russian, Spanish, and Arabic.
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.
Yes, we support online training. We also have English operation videos for F7 OTDR (on our YouTube channel) and analysis software for our clients.
Email: info@tfngj.com
WhatsAPP:
+86 187 6521 9251
Scan the QR code to chat with us on WhatsApp! Or request a quote online
