Comtech EF Data SMS-301 - Manual (Page 28)

Installation SMS-301 Redundancy Switch
2–6 Rev. 3
2.3.2 Data I/O Connections
The 1:1 switch data interface is dependent upon the installed switchboard. These are
described in the following sections.
2.3.2.1 Data I/O Connector (J1, J2, J3), 50-Pin (PL/5951)
Note: For ASYNC, IBS, IDR, and D&I applications.
In order to maintain compatibility with various Comtech EFData breakout panels, the 50-
pin D subminiature connector has the assignments shown in Table 2-4, depending upon the
current operating mode.
Table 2-4. Data I/O Connector, 50-Pin
50-Pin D Connector
Pin # IDR IBS Async D&I
34 G.703 SDA In G.703 SDA In G.703 SDA In G.703 SDA In
18 G.703 SDB In G.703 SDB In G.703 SDB In G.703 SDB In
36 G.703 RDA Out G.703 RDA Out G.703 RDA Out G.703 RDA Out
20 G.703 RDB Out G.703 RDB Out G.703 RDB Out G.703 RDB Out
35 EIA-422 ExtClkA In V.35/EIA-422 EXCA In V.35/EIA-422 EXCA In EIA-422 EXCA In
19 EIA-422 ExtClkB In V.35/EIA-422 EXCB In V.35/EIA-422 EXCB In EIA-422 EXCB In
37 EIA-422 8k TXDA In V.35/EIA-422 SD-A In V.35/EIA-422 SD-A In G.703 DDO-A Out
38 EIA-422 8k TXDB In V.35/EIA-422 SD-B In V.35/EIA-422 SD-B In G.703 DDO-B Out
21 EIA-422 8k TClkA Out V.35/EIA-422 ST-A Out V.35/EIA-422 ST-A Out
22 EIA-422 8k TClkB Out V.35/EIA-422 ST-B Out V.35/EIA-422 ST-B Out
4 EIA-422 TXOctA In ESC TXDB In (EIA-485 only)
5 EIA-422 TXOctB In ESC TXDA In (EIA-232 only) ESC TXDA In (EIA-485 & 232) ESC TXD In (EIA-232 only)
39 EIA-422 8k RXDA Out V.35/EIA-422 RD-A Out V.35/EIA-422 RD-A Out G.703 IDI-A In
40 EIA-422 8k RXDB Out V.35/EIA-422 RD-B Out V.35/EIA-422 RD-B Out G.703 IDI-B In
23 EIA-422 8k RClkA Out V.35/EIA-422 RT-A Out V.35/EIA-422 RT-A Out G.703 IDI-B In
24 EIA-422 8k RClkB Out V.35/EIA-422 RT-B Out V.35/EIA-422 RT-B Out
6 EIA-422 RXOctA Out ESC RXDB Out (EIA-485 only)
7 EIA-422 RXOctB Out ESC RXDA Out (EIA-232 only) ESC RXDA Out (EIA-485 & 232) ESC RXD Out (EIA-232)
45 Aud1-A In (or 64SDA) V.35/EIA-422 RTS-A V.35/EIA-422 RTS-A
29 Aud1-B In (or 64SDB) V.35/EIA-422 RTS-B V.35/EIA-422 RTS-B
44 BWO4_NO SECONDARY_NO SECONDARY_NO
12 BWAI 1 V.35/EIA-422 SCTE/TT A V.35/EIA-422 SCTE/TT A
13 BWAI 2 V.35/EIA-422 SCTE/TT B V.35/EIA-422 SCTE/TT B
14 BWAI 3 EIA-422 TX Oct A
15 BWAI 4 EIA-422 TX Oct B
17 Def Maint Alrm
16 Demod Fault C
50 Demod Fault NO
3 AGC Out AGC Out AGC Out AGC Out
49 MF (Open Collector) MF (Open Collector) MF (Open Collector) MF (Open Collector)
33 DF (Open Collector) DF (Open Collector) DF (Open Collector) DF (Open Collector)
1, 2 Ground