88
Installation
TB9400/TN9275 Installation and Operation
© Tait International Limited May 2023
Pin
Signal Name
Signal Type
Notes
1
balanced audio out +
output
2
balanced audio out -
3
unbalanced audio out
output
4
ground
ground
5
unbalanced audio in
Input
6
balanced audio in +
input
7
balanced audio in -
8
RSSI indication
output
9
Rx gate
output
10
Tx key
input
11
digital i/o 1
custom alarm 1
input/output
Configurable as a digital input
for TaskBuilder or a custom
alarm input.
5V TTL logic active state
configurable (active high vs.
active low).
12
digital i/o 2
custom alarm 2
13
+5.2VDC output
power output
maximum current 200mA
14
digital i/o 3
custom alarm 3
input/output
Configurable as a digital input
for TaskBuilder or a custom
alarm input.
5V TTL logic active state
configurable (active high vs.
active low).
15
digital i/o 4
custom alarm 4
16
digital i/o 5
custom alarm 5
17
digital i/o 6
custom alarm 6
18
digital i/o 7
custom alarm 7
19
digital i/o 8
custom alarm 8
20
digital i/o 9
custom alarm 9
21
digital i/o 10
custom alarm 10 / Rx
disable
Configurable as a digital input
for TaskBuilder, a custom alarm
input or as the input for the Rx
disable function.
5V TTL logic active state
configurable (active high vs.
active low).
22
digital i/o11
custom alarm 11
Configurable as a digital input
for TaskBuilder or a custom
alarm input.
5V TTL logic active state
configurable (active high vs.
active low).
23
digital i/o 12
custom alarm 12
24
digital out 13
antenna relay
output
Configurable as a digital output
for TaskBuilder or to drive the
antenna relay with simplex
operation. Cannot be
configured for both at the same
time.
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%
external view
