2-4
044-05xxx Rev A
2-5.2 Combo
Connector
The power, alarm, control, and RF connections on the amplifier are made through a 21WA4 male
connector, located on the rear of the amplifier. Pins are listed and described in Table 2-3. Alarms are
interpreted by the amplifier sub-rack and reported to the base station as a system level alarm.
A1
A2
A3
A4
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17
Figure 2-2. Combo Connector (Male, on Rear of G3L-929-135 Amplifier Module)
Table 2-3. G3L-929-135 Amplifier Combo Connector Signal List
Pins/Signal Names
A1
RF Input (Coaxial Contact)
A2
+27 Vdc (Power Contact)
A3
Ground (Power Contact)
A4
RF Output (Coaxial Contact)
1
TX H (RS-485)
10
System Reset TTL
2
TX L (RS-485)
11
NC
3
GND
12
NC
4
RX H (RS-485)
13
AMP AO
5
RX L (RS-485)
14
AMP A1
6
GND
15
AMP A2
7
MOD_DET
16
NC
8
Summary Fault
17
MCPA Temp
9
DC (On/Off)
