F7 Compact OTDR
High-performance OTDR (optical time domain reflectometer) to detect and measure the health of fiber optic cables
Highlights
- Supports singlemode, multimode, and combined options.
- Up to 45 dB dynamic range
- A minimum event blind zone of 0.8 m
- The online test module enables lossless link light test
- An 8-inch color touchscreen is easy to use
- OPM, VFL, OLS
- Live fiber testing (optional)
- Fiber microscope
- Optical loss test
- Event map
- Bluetooth
TFN offers a high-performance multi-function OTDR for fast and accurate optical fiber testing. F7 features dual-wavelength, three-wavelength (for active fiber online test), and four-wavelength options, fully supporting PON/FTTx networks.
Specifications
| 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 | ±(0.75 m+ sampling interval + 0.005%*test distance) | |||||||
| Optical Connector | FC/PC （interchangeable SC, ST） | |||||||
| OPM | -50 dB ~+26 dB | |||||||
| Battery | 15600 mAh. Standby time over 10 hours | |||||||
| Weight | 1.7 kg | |||||||
Product Features
1.High Precision and Extended Dynamic Range
Delivers up to 35/33 dB dynamic range, expandable to 45 dB, enabling accurate testing of long-haul fiber links.
With a distance resolution of 0.05 m and a minimum event dead zone of just 0.8 m, the system reliably detects short-distance events and subtle signal losses.
2.All-in-One, Modular Test Platform
Supports SM, MM, or hybrid configurations, with two/ three/ four-wavelength options to match diverse network environments.
Integrated OTDR, light source, optical power meter, VFL, end-face inspection, and network testing functions reduce the need for multiple instruments and lower total equipment costs.
3.Intelligent Diagnostics & Efficient Operation
Built-in self-diagnostic analysis improves test accuracy and result reliability.
Customizable Pass/Fail criteria, multi-trace comparison, and one-click PDF report generation streamline on-site verification and documentation.
4.Remote and Live Network Testing
Supports Ethernet-based remote OTDR control, making it suitable for unattended testing and centralized maintenance operations.
Optional online testing modules enable non-intrusive testing of live fiber links, allowing measurements without service interruption.
5.Flexible Expansion & Industry Compatibility
Equipped with multiple interfaces including USB-A, USB-C, Ethernet, and Bluetooth for seamless connection to USB storage devices, end-face microscopes, and PCs.
Test data complies with SOR industry standards, ensuring smooth file sharing and compatibility with third-party analysis software.
OTDR Testing
Supports up to four wavelengths
Features event mapping, macro-bend analysis, and four-point/LSA curve analysis. Configurable start/end fibers with customizable threshold detection.
Optical Laser Source (OLS) and Optical Power Meter (OPM)
Light source supports CW, 270 Hz, 1 kHz, 2 kHz modulation.
Wide optical power meter measurement range (+70 dBm to +26 dBm), supports multi-wavelength identification.
Visual Fault Locator (VFL)
Supports continuous 1 Hz/ 2 Hz visible red light for rapid fiber fault location.
Applications: communication operator, optical cable producer, and electric power/railway/highspeed network
Product Demo
Real Experiences with the F7 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 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”
FAQs
Which languages does F7 support?
Our F7 OTDR support English for standard version, and the optional version supports Russian, Spanish, and Arabic.
Can the F7 test both single-mode and multi-mode fibers?
Yes, the F7-SM1 model supports integrated single-mode and multi-mode testing. Other models are configurable with optional modules to cover various fiber types.
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.
Does the F7 support remote testing?
Yes, via Ethernet (LAN2 port) or Bluetooth (with optional APP), enabling remote control, file transfer, and real-time monitoring from a PC or mobile device.
Is the F7 suitable for live network testing?
Yes, models F7-T1, T2, and T3 support live PON testing, allowing non-intrusive diagnostics on active fiber networks without service interruption.
What file formats does the F7 support for test reports?
The F7 saves test curves in SOR format and can generate comprehensive PDF reports, which include event lists, graphs, and test parameters.