TB9100/P25 CG Installation and Operation Manual
Installation
59
© Tait Electronics Limited January 2007
Before connecting up any E & M or 4-wire audio circuit, consult the
Network Installation Guide for information on circuit design and interface
protection. On the E & M circuit, the DC current flow must not exceed
150 mA under any conditions. There must also be sufficient suppression to
absorb any inductive spikes. If DC is applied to the 4 wire audio lines, it
should also be limited to 150 mA. The nominal voltage should not exceed
48V and the peak voltage must never exceed 58V.
Note
Refer to the CSS documentation for information on setting the
analog line level.
Connecting General Purpose Inputs and Outputs
The TB9100 has a number of configurable general purpose inputs and
outputs. These are connected via the 9-way D-range. Pin 1 and Pin 9 can
have different functions: select the function you want using the CSS. Digital
inputs and outputs require Task Manager programming before they are
operational. Refer to the CSS documentation for further information.
The D-range is used for general purpose inputs and outputs and also as an
RS-232 serial port, for example during tuning and calibration. Each pin has
only one function, so using the D-range as a serial port does not interfere
with the digital inputs and outputs.
The pin allocations for the D-range connector are given in the following
table.
Pin
Description
1
digital output 1/
digital input 4/
antenna relay
2
transmit data output
3
receive data input
4
digital input 0
5
ground
6
digital input 1
7
digital input 2
8
digital input 3
9
digital output 0/
RSSI
a
a. Pin 9 can function as digital output 0 or as an RSSI output (selected using the CSS). If
it provides an RSSI output, the range of received signal is configurable between -130
dBm and -60 dBm. The DC output characteristic lies between the fixed points of 0.5
V and 4.5 V.
h
j
b
g
i
c
d
e
f
front view
Содержание P25 CG
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