User's Manual

TB8100 Installation and Operation Manual Connection 91
© Tait Electronics Ltd March 2004
Isolated
This system interface PCB is fitted to reciters bearing the product code
TBA4xxx-0B0x or TBA5xxx-0B0x. If purchased separately, it has the
product code TBA10B0. It is the same as the standard model, except that
the balanced audio interfaces are galvanically isolated.
Isolated E&M This system interface PCB is fitted to reciters bearing the product code
TBA4xxx-0C0x or TBA5xxx-0C0x. If purchased separately, it has the
product code TBA10C0. It provides:
■ isolated balanced audio I/O
■ opto-isolated keying
■ opto-isolated gate output.
It is fitted with a 25-way female D-range connector and an auxiliary DC
input connector. The pin allocations are listed in the table below.
Pin Signal Name Signal Type Notes
1 Rx line out +
audio output transformer isolated line
2 Rx line out –
3 Rx audio out audio output
4 audio ground ground
5 Tx audio in audio input
6 Tx line in +
audio input transformer isolated line
7 Tx line in –
8 RSSI DC signal
9 Rx gate output open collector
10 Tx key input
11 digital out 1
output open collector
12 digital out 2
13 +AUX_V power output
14 digital in 1
input 5V logic
15 digital in 2
16 digital in 3
17 digital in 4
18 digital in 5
19 digital in 6
20 opto +/–
isolated keying input
21 opto –/+
22 relay +/–
isolated gate output
23 relay –/+
24 Tx relay output open collector
25 ground ground
B
C
D
E
F
G
H
I
J
1)
1!
1@
1#
1$
1%
1^
1&
1*
1(
2)
2!
2@
2#
2$
2%
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