Comtech EF Data SMS-301 - Manual (Page 76)

Theory of Operation SMS-301 Redundancy Switch
4-10 Rev. 3
Table 4-12. Modem B Data (J15)
Pin # Circuit Description Pin # Circuit Description
1 - N/A 51 GND GROUND
2 - N/A 52 B_TC232_5 EIA-232, TX CLK, TRIB 5
3 - N/A 53 B_TD232_5 EIA-232, TX DAT, TRIB 5
4 - N/A 54 B_CTS232_5 EIA-232, CTS, TRIB 5
5 GND GROUND 55 B_TD422B_5 EIA-422, TX DATB (+), TRIB 5
6 GND GROUND 56 B_TD422A_5 EIA-422, TX DATA (-), TRIB 5
7 /B_DF DEMOD FAULT 57 B_TC422B_5 EIA-422, TX CLKB (+), TRIB 5
8 /B_MF MOD FAULT 58 B_TC422A_5 EIA-422, TX CLKA (-), TRIB 5
9 GND GROUND 59 B_CTS422B5 EIA-422, CTSB (+), TRIB 5
10 B_RT+B RECEIVE TIMING B(+) 60 B_CTS422A5 EIA-422, CTSA (-), TRIB 5
11 B_RT-A RECEIVE TIMING A(-) 61 GND GROUND
12 GND GROUND 62 B_TC232_4 EIA-232, TX CLK, TRIB 4
13 B_RD+B RECEIVE DATA B(+) 63 B_TD232_4 EIA-232, TX DAT, TRI 4
14 B_RD-A RECEIVE DATA A(-) 64 B_CTS232_4 EIA-232, CTS, TRIB 4
15 GND GROUND 65 B_TD422B_4 EIA-422, TX DATB (+), TRIB 4
16 B_RR+B RECEIVER READY B(+) 66 B_TD422A_4 EIA-422, TX DATA (-), TRIB 4
17 B_RR-A RECEIVER READY A(-) 67 B_TC422B_4 EIA-422, TX CLKB (+), TRIB 4
18 GND GROUND 68 B_TC422A_4 EIA-422, TX CLKA (-), TRIB 4
19 B_MCB MASTER CLOCK B 69 B_CTS422B4 EIA-422, CTSB (+), TRIB 4
20 B_MCA MASTER CLOCK A 70 B_CTS422A4 EIA-422, CTSA (-), TRIB 4
21 GND GROUND 71 GND GROUND
22 B_TC232_8 EIA-232,TX CLK, TRIB 8 72 B_TC232_3 EIA-232, TX CLK, TRIB 3
23 B_TD232_8 EIA-232,TX DAT, TRI 8 73 B_TD232_3 EIA-232, TX DAT, TRI 3
24 B_CTS232_8 EIA-232, CTS, TRIB 8 74 B_CTS232_3 EIA-232, CTS, TRIB 3
25 B_TD422B_8 EIA-422, TX DATB (+), TRIB 8 75 B_TD422B_3 EIA-422, TX DATB (+), TRIB 3
26 B_TD422A_8 EIA-422, TX DATA (-), TRIB 8 76 B_TD422A_3 EIA-422, TX DATA (-), TRIB 3
27 B_TC422B_8 EIA-422, TX CLKB (+), TRIB 8 77 B_TC422B_3 EIA-422, TX CLKB (+), TRIB 3
28 B_TC422A_8 EIA-422, TX CLKA (-), TRIB 8 78 B_TC422A_3 EIA-422, TX CLKA (-), TRIB 3
29 B_CTS422B8 EIA-422, CTSB (+), TRIB 8 79 B_CTS422B3 EIA-422, CTSB (+), TRIB 3
30 B_CTS422A8 EIA-422, CTSA (-), TRIB 8 80 B_CTS422A3 EIA-422, CTSA (-), TRIB 3
31 GND GROUND 81 GND GROUND
32 B_TC232_7 EIA-232, TX CLK, TRIB 7 82 B_TC232_2 EIA-232, TX CLK, TRIB 2
33 B_TD232_7 EIA-232, TX DAT, TRI 7 83 B_TD232_2 EIA-232, TX DAT, TRI 2
34 B_CTS232_7 EIA-232, CTS, TRIB 7 84 B_CTS232_2 EIA-232, CTS, TRIB 2
35 B_TD422B_7 EIA-422, TX DATB (+), TRIB 7 85 B_TD422B_2 EIA-422, TX DATB (+), TRIB 2
36 B_TD422A_7 EIA-422, TX DATA (-), TRIB 7 86 B_TD422A_2 EIA-422, TX DATA (-), TRIB 2
37 B_TC422B_7 EIA-422, TX CLKB (+), TRIB 7 87 B_TC422B_2 EIA-422, TX CLKB (+), TRIB 2
38 B_TC422A_7 EIA-422, TX CLKA (-) TRIB 7 88 B_TC422A_2 EIA-422, TX CLKA (-), TRIB 2
39 B_CTS422B7 EIA-422, CTSB (+),TRIB 7 89 B_CTS422B2 EIA-422, CTSB (+), TRIB 2
40 B_CTS422A7 EIA-422, CTSA (-), TRIB 7 90 B_CTS422A2 EIA-422, CTSA (-), TRIB 2
41 GND GROUND 91 GND GROUND
42 B_TC232_6 EIA-232, TX CLK, TRIB 6 92 B_TC232_1 EIA-232, TX CLK, TRIB 1
43 B_TD232_6 EIA-232, TX DAT, TRI 6 93 B_TD232_1 EIA-232, TX DAT, TRIB 1
44 B_CTS232_6 EIA-232, CTS, TRIB 6 94 B_CTS232_1 EIA-232, CTS, TRIB 1
45 B_TD422B_6 EIA-422, TX DATB (+),TRIB 6 95 B_TD422B_1 EIA-422, TX DATB (+), TRIB 1
46 B_TD422A_6 EIA-422, TX DATA (-), TRIB 6 96 B_TD422A_1 EIA-422, TX DATA (-), TRIB 1
47 B_TC422B_6 EIA-422, TX CLKB (+), TRIB 6 97 B_TC422B_1 EIA-422, TX CLKB (+), TRIB 1
48 B_TC422A_6 EIA-422, TX CLKA (-), TRIB 6 98 B_TC422A_1 EIA-422, TX CLKA (-), TRIB 1
49 B_CTS422B6 EIA-422, CTSB (+), TRIB 6 99 B_CTS422B1 EIA-422, CTSB (+), TRIB 1
50 B_CTS422A6 EIA-422, CTSA (-), TRIB 6 100 B_CTS422A1 EIA-422, CTSA (-), TRIB 1