84417_O&I_TR-810_C
Installation
Page 4-6
4.5
Antenna connectors
The antenna should be of good quality with regards to gain and VSWR to obtain maximum
performance. Make sure that the VSWR on the antenna is low, and that the cable from the
transmitter to the antenna is of good quality to avoid mismatch and unnecessary losses.
A cable loss of 1 dB is the same as reducing the power output of a 10W transmitter to less
than 8.5W. Similarly, a cable loss of 2 dB is the same as reducing the output power to less
than 7W.
In areas were thunderstorms and lightning is a problem, surge arrestors should be mounted
between the antenna connector and the antenna cable. The arrestors should be of good
quality and be capable of handling the output power of the transmitter.
The antenna input of the transceiver is the BNC-type antenna connector on the back of the
transceiver unit.
4.6
DC connection
Refer to chapter 2.1 for voltage limits.
4.7
Remote signals
Several remote signals are available on the rear interfaces of the transceiver unit.
These signals can be grouped into: Audio signals, Key signals and I/O signals.
Note, for all interface signals, RJ45 connectors are used. As far as practically possible, the
pairs used on a standard ethernet connection are used when a signal is input/output as a
pair to the radio (e.g. audio lines).
For interconnections between the front module and transceiver unit, standard Cat5E,
ethernet cable should be used. This is a good quality, screened cable, with 1 to 1
connections between the two connectors.
Refer to chapter 3.1.4, 3.2.3 and 3.2.4 for an overview of the different connectors.
The following audio remote signals are available on the rear connectors:
Monitor out:
Monitor signal, usually connected to a recording unit.
Microphone input:
MIC II connector for connection of microphone at the rear of the
transceiver unit.
See Table 4.7-1 for menu settings.
Loudspeaker output:
For connection of an external loudspeaker. See Table 4.7-1 for menu
settings.
Summary of Contents for TR-810
Page 32: ......
