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7.9.6
Subrack Slot D25 Connector Pin Allocations
Rev. C
Pin No
Description
14,15
RS-232 Signal Ground
1
RS-232 Receive Data
2
RS-232 Transmit Data
3
AF-232 Output
16
AF-232 Signal ground
8
AF-232 Input
21
AF-232 Signal ground
4
RX MUTE Sense INPUT
17
Rx MUTE Sense GROUND
5
PTT drive OUTPUT
8
PTT common (GROUND)
6
Hi-Z Unbalanced TX audio OUTPUT
19
Hi-Z Unbalanced TX audio GROUND
7
Unbalanced RX audio INPUT
20
Unbalanced RX audio GROUND
22-25
Balanced 2-wire line (first wire)/4w TX
9-12
Balanced 2-wire line (second wire)/4w TX
7.9-5
HMXMU001018
10/06
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