Connecting The Power Cable To The Power Source - Tait tm9100 p25 Installation Manual

3.5

Connecting the Power Cable to the Power Source

This section provides information on connecting the power cable to the
power source.
The power connector is the interface to the vehicle battery and an optional
Power Connector
external remote speaker. Connecting a remote speaker is described in
"Connecting a Remote Speaker" on page
>25W 25W
Table 3.1 Power connector (radio) - pins and signals
Pinout
>25W radio
rear view
25W radio
1 2 3 4
rear view
In passenger vehicles, the radio is always connected directly to the battery
Selecting the Power
Source
using the power cable provided.
In trucks, where direct connection to the battery is often not possible, the
radio can be connected to a suitable terminal inside the fuse box that is
connected directly to the battery.
In vehicles with a supply voltage larger than 16.0V, such as many trucks, it
24V-to-12V
Converter
is essential to provide a 24V-to-12V converter with a minimum rating of
15A for radios
>25W 25W
radio from excessive battery voltage and provide the correct DC operating
conditions. Note that most 24V-to-12V converters already fitted are not
rated sufficiently.
18 Installing the Radio
Pin Signal name Description
1 AGND Earth return for radio body power
source
2 SPK– External speaker output. Balanced load
configuration
3 SPK+ External speaker output. Balanced load
configuration
4 13V8 BATT DC power input for radio body and
control head
Notice This radio is designed to operate from a nominal 12V negative
ground supply and may draw up to 15A of current. The radio will tol-
erate a supply voltage range of 10.8V to 16.0V at the radio.
Notice Do not connect the radio to the center tap of two 12V batter-
ies! This may result in damage to the radio due to earth loops, in partic-
ular when the negative lead is disconnected from the vehicle battery.
It may also result in overcharging or undercharging of the batteries,
reducing their service life.
1
>25W and 10A for the 25W radio. This will isolate the
1. For the 110W radio, refer to the TM9100 110W Mobile Radio Installation
Guide (MMA-00039-xx).
20.
Signal type
Ground
Analog
Analog
Power
TM8100/TM8200 Installation Guide
© Tait Limited October 2012