Jotron AS| TR7750C: Operators Manual Installation
P/N: 84748 (G)
Other useful signals in Remote configuration:
Alarm out, Select in, RS232, +12V
3.2.5 (transmitter AUX1) and
3.4.4 (receiver AUX1)
Key out relay, Monitor output, TX_LOW (Gas alarm) input, TXKEY
Squelch out relay, AGC HILO output, AGC voltage output
RS485, Line input, Key, Squelch, Alarm
Table 4.7-3, Transceiver, Remote (4W) interface
4.7.3 Transmitter, main / backup configuration
By connecting the alarm output from one (main) transmitter to the select input on a backup unit, it is
possible to perform automatic switching between them. In this way, if a main transmitter detects an
internal failure, it can be set up to enter into standby mode and stop transmissions. The alarm signal
will also signal to a backup unit to take over the transmit function.