TM8100/TM8200 Installation Guide
Installing the Radio
31
© Tait Limited
November 2012
3.12
RJ45 Control Head
The RJ45 control head on the TM8252 telemetry radio has one RJ45
socket installed and a cavity where another RJ45 can be installed. The
control head also has a power on/off LED.
Notice
When a connector is not in use, the RJ45 bung for the con-
nector must be installed. This ensures that the control head is sealed
against water, dust and other environmental hazards.
The pin allocations for the RJ45 programming connector are explained in
the following table.
Figure 3.9
TM8252 telemetry radio
Table 3.6
Programming connector for the RJ45 control head - pins and signals
Pinout
Pin Signal
name
Description
1
RX AUD
Receive audio output (after volume
control)
2
+13.8V
Unswitched 13.8V power supply
3
TXD
Asynchronous serial port: transmit data
4
PTT
PTT input
5
MIC AUD
Microphone audio input
6
AGND
Analogue ground
7
RXD
Asynchronous serial port: receive data
8
ON/OFF
Hardware power on/software power off
input (active low)
RJ45 bung
programming
connector
(bung removed)
on/off LED
front view
