Connectors
354 Manpack Transceiver 2110 series Reference Manual
Pinouts of the 19-way GPIO connector (2110 only)
The 19-way connector provides an interface for an automatic antenna tuner, modem,
crosspatch, telephone interconnect, morse key, external speaker and battery charger.
Figure 56: Front view of the 19-way GPIO connector (2110 only)
Table 44: Pinouts of the 19-way GPIO connector (2110 only)
Pin no. Function Input/output Signal level
A Line audio Input 300 mV p–p (ALC threshold)
I/P approx. 50 k bridging
B
C Line audio Output 1 V p–p (20 dB above AGC)
600 load maximum
D Morse Input Active low
E RS232 Tx data Output RS232
F RS232 Rx data Input RS232
G PTT Input Active low
H Power and signal ground 0 V DC
J Speaker (+) audio bridging Output 1 W into 4
K Protected, switched supply
from battery
Output 12 V DC nominal
10 to 15 V DC range
1 A maximum
L Speaker (–) audio paired with
J
Output 1 W into 4
M Power in for charging battery Input 15.5 V DC approx.
1 A maximum, current
limiting
N Antenna control Input 3.3 V DC logic
5 V DC maximum
P Input/output 3.3 V DC logic
5 V DC maximum
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