Trunk line amplifier ULM
Descriptions
Scopes
Technical parameters
Descriptions
The trunk line amplifier is designed to compensate for attenuation and additional amplification of signals in creating four-wire channels for long-distance intercom, dispatching communication and telemechanics. The amplifier is designed for operation at intermediate and end points with placement in communication centers and in unattended repeater stations (URS).
Scopes
- Receiving, amplification and transmission of signals (transit) at intermediate points in the trunk communication line;
- Two auxiliary amplifier channels for combining two trunks or connecting an intercom;
- The capability of stepwise gain compensation and frequency equalization at high frequencies;
- The capability to control the signal levels in the two main channels using the built-in LED indicator;
- Monitoring the presence of the input;
- The capability to connect to a remote power supply.
Technical parameters
Number of amplifier channels, main/auxiliary | 2/2 |
Output levels | 0/-13 dB |
Stepwise gain compensation, minimum | 35 dB |
Power supply voltage | 21 to 27 V |
Power consumption | 10 W |
Dimensions, WxHxD | 330x47x175 mm |
Weight | 1.5 kg |