The manual provides overview, installation, operation, and troubleshooting for the Guangzhou Light Bridge GQ8004 E1 automatic protection switching equipment.
The GQ8004 E1 circuit automatic protection switching equipment is designed for reliable transmission of critical digital services, offering loss‑free switching between two transmission lines. It supports up to eight 2 M b/s E1 channels and automatically selects the best line to reduce error rates.
The document covers the device overview, installation and commissioning steps, detailed operation instructions, fault diagnosis, and guidelines for packaging, transportation, and storage. This manual is written in Chinese.
| E1 interfaces (user) | 4 (120 channels) |
|---|---|
| E1 interfaces (transmission lines) | 8 (two lines) |
| Power supply voltage | DC 24‑48 V (or AC 220 V), no polarity requirement |
| Operating temperature | -5 °C to +45 °C |
| Maximum humidity | 85 % (up to 30 °C) |
| Power consumption | ≤ 8 W per system |
| E1 interface standard | ITU‑T G.703, G.704, G.823 |
It operates from DC 24‑48 V (or AC 220 V) and has no polarity requirement.
The unit has four user E1 interfaces (120 channels) and eight E1 interfaces on the two transmission lines.
The system consumes no more than 8 W.
It can operate from –5 °C up to +45 °C.