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Table 4. Card Edge Connector Pin Assignments (Solder Side)
(Component Side)
6
Card Alt #1 Alt #2 Function User Connection
Edge Conn Conn
1 A A Ch #4 Rx Bal. Line In (-)
3 B B Ch #4 Rx Mute
5 C C Ch #4 Rx Bal. Line In (+)
7 D D Ch #4 Rx UnBal Line In
9 E E Ch #3 Rx UnBal Line In
11 F F Ch #3 Rx Bal Line In (+)
13 H H Ch #3 Rx Bal. Line In (-)
15 J J Ch #2 Rx Bal. Line In (-)
17 K K Ch #3 Rx Mute
19 L L Ch #2 Rx UnBal Line In
21 M M Ch #2 Rx Bal Line In (+)
23 N N Ch #2 Rx Mute
25 P P Ch #1 Rx Unbal Line In
27 R R Ch #1 Rx Bal Line In (+)
29 S S Ch #1 Rx Bal. Line In (-)
31 T T Ch #1 Rx Mute
33 U U Ch #4 Tx Bal. Line Out (+)
35 V V Ch #3 Tx Bal. Line Out (+)
37 W W Ch #2 Tx Bal. Line Out (+)
39 X X Pos. 12 Vdc Return (Gnd)
41 Y Y Ch #1 Tx Bal. Line Out (+)
43 Z Z No Connection
45 A AA Sum Audio Out
47 B BB Mic Audio In
49 C CC Mic PTT
51 D DD N/A
53 E EE No Connection
55
F FF Position 12 Vdc Input
Card Alt #1 Alt #2 Function User Connection
Edge Conn Conn
2 1 1 No Connection
4 2 2 Ch #4 RXAGND
6 3 3 Ch #4 Mute Gnd
8 4 4 No Connection
10 5 5 No Connection
12 6 6 Ch #3 RXAGND
14 7 7 Ch #3 Mute Gnd
16 8 8 No Connection
18 9 9 No Connection
20 10 10 Ch #2 RXAGND
22 11 11 Ch #2 Mute Gnd
24 12 12 No Connection
26 13 13 No Connection
28 14 14 Ch #1 RXAGND
30 15 15 Ch #1 Mute Gnd
32 16 16 No Connection
34 17 17 Ch #4 Tx Bal. Line Out (-)
36 18 18 Ch #3 Tx Bal. Line Out (-)
38 19 19 Ch #2 Tx Bal. Line Out (-)
40 20 20 Pos. 12 Vdc Return (Gnd)
42 21 21 Ch #1 Tx Bal. Line Out (-)
44 22 22 Sum Audio In
46 23 23 Earpiece Audio Out
48 24 24 Speaker Mute
50 25 25 MICAGND
52 26 26 No Connection
54 27 27 N/A
56 28 28 Pos. 12 Vdc Input