FAQs on OTDR
Here you’ll find answers to OTDR testers. If you can’t find what you’re looking for, feel free to contact our team.
General Questions
What is dynamic range in an OTDR, and why is 50 dB important?
Dynamic range represents the maximum attenuation an OTDR can measure between the start of the fiber and its end. A higher dynamic range (like 50dB) allows the instrument to test longer fibers, fibers with more splices and connectors (higher total loss), or maintain a good signal-to-noise ratio over distance. This means you can characterize a long-haul link in one test or get clearer results on complex, high-loss access networks.
What is the "dead zone," and why is a shorter one better?
The dead zone is the minimum distance after a strong reflective event (like a connector) where the OTDR cannot detect or accurately measure another event. A shorter dead zone (0.6m for RM7) is crucial because it allows the instrument to "see" and measure faults or connections that are very close together, which is common in patch panels and distribution frames. This leads to more accurate fault location and comprehensive link analysis.
F7
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.
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.
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.
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.
RM7
Can this device replace a standalone optical power meter?
Absolutely. The integrated OPM module is a fully functional, calibrated power meter with a wide range (-50 to +30 dBm) and multiple calibration wavelengths. It can be used docked with the main unit or detached as a standalone handheld meter, making it a perfect all-in-one replacement for carrying a separate device.
Is the RM7 suitable for testing operational PON (FTTx) networks?
Yes, using a suitable module (e.g., the RM7-C1 with a wavelength of 1625nm), the RM7-C1 has a 1:128 splitting ratio and supports out-of-band testing of operational PON networks. The iOLA function is designed to simplify the certification and troubleshooting of PON splitters and drop fibers, providing clear pass/fail results for the entire link.
How to get the test reports off the device?
You have multiple options: 1) Use the USB port to copy files directly to a flash drive. 2) Use the Wi-Fi/Ethernet connection to transfer files over a network. 3) Remove the TF (microSD) card. 4) Generate a PDF report and email it directly if cellular data is configured. The device supports common formats (.pdf, .png, .csv) for easy integration into your documentation system.
F4
Is the battery replaceable?
The F4 uses a built-in 15,600 mAh rechargeable lithium-ion battery, providing up to 12 hours of continuous use. It can be charged via DC port or Type-C interface.
What types of fiber networks is the F4 suitable for?
The F4 supports single-mode and multimode fibers, making it ideal for telecom, data centers, enterprise networks, FTTH, and CATV systems. It also includes PON testing mode for passive optical networks.
How accurate are the OTDR measurements?
The F4 offers range accuracy of ±(0.75m + sampling interval + 0.005% × distance) and loss accuracy of ±0.05 dB/dB, ensuring reliable results for installation and maintenance.
Can I use the F4 for remote testing?
Yes, the F4 supports Ethernet remote control, allowing users to operate the OTDR from a PC via LAN connection. This is useful for centralized testing and monitoring.
What file formats are supported for test reports?
Test data can be saved in SOR format for curve analysis and exported as PDF reports. The device also supports file management via USB, TF card, and Bluetooth.
MN3 & F1
What is the main difference between MN3 and F1 models?
The F1 offers a higher dynamic range (32/30dB) compared to MN3 (28/26dB), making it suitable for longer-distance fiber testing. Both models share the same compact design and multifunctional features.
Is training required to use this OTDR?
The device supports both auto-test and expert modes. Beginners can use one-touch auto-test, while experienced users can customize parameters. The intuitive interface and multi-language support make it easy to learn.
Can I use it for live network testing?
This device is designed for offline testing. Always refer to the manual for safe operation to avoid equipment damage.
How do I export test data?
You can save curves and event lists to the internal storage or TF card, and transfer them via USB to a PC or printer for reporting.
If you can’t find what you’re looking for, our team is here to help.