PON OTDR
Variant Specifications
PON Single-Mode 1625nm OTDR with VFL & OPM
The D-TECH PON Single-Mode 1625nm OTDR is a cost-effective and user-friendly testing device designed specifically for FTTH network environments. It focuses on a single 1625nm wavelength, allowing efficient and accurate fiber testing while reducing the complexity and cost associated with multi-wavelength OTDR systems.
This OTDR enables non-intrusive online testing without interrupting live optical signals, making it ideal for maintenance and troubleshooting in active fiber networks. With built-in VFL and Optical Power Meter (OPM), it provides a complete solution for fiber inspection, fault location, and signal verification.
Key Features
Supports single-mode 1625nm wavelength testing optimized for FTTH networks
Non-intrusive online testing without interrupting optical signal transmission
Accurate fault location for fiber breaks, bends, and connection issues
Fast detection of loss, reflection events, and macro bending
Clear distinction between attenuation events and reflection events
Built-in storage for test results and data records
Integrated VFL and OPM functions for complete fiber testing
Simple operation with no complex configuration required
Compact and lightweight design (approximately 450g)
Flexible power options including AA batteries and USB supply
Technical Parameters
| Parameter | Specification |
|---|---|
| Model Number | TTWH1625 / TWH-6118 |
| Dynamic Range | 40 dB / 35 dB |
| Splitter Support | 1:64 / 1:32 |
| Test Dead Zone | ≤ 3 m |
| Reflective Dead Zone | ≤ 10 m |
| Attenuation Dead Zone | < 30 m |
| Distance Resolution | 1 m |
| Pulse Width | 10 ns ~ 500 ns |
| Distance Accuracy | ±(0.8 m + 0.01% × distance ± resolution) |
| Loss Threshold | > 0.8 dB |
| Loss Resolution | 0.1 dB |
| Connector | FC/PC or SC/PC |
| OPM Wavelength | 850 / 1300 / 1310 / 1490 / 1550 / 1625 nm |
| OPM Range | -70 ~ +8 dBm or -50 ~ +26 dBm |
| VFL Output | 10 mW / 20 mW |
| Storage | 100 Groups |
| Display | 2.8” TFT Color Screen |
| Port | Mini USB |
| Power Supply | AA Battery / Rechargeable / USB |
| Working Time | Standby >15 hrs / Test >8 hrs |
| Operating Temperature | -10°C to +50°C |
| Storage Temperature | -20°C to +60°C |
| Dimensions | 210 × 120 × 55 mm |
| Weight | ~450 g |
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