Comtech EF Data SDR-54A - Manual (Page 40)

SDR-54A Satellite Demodulator Revision 4
DEMUX Option MN/SDR54A.IOM
5.2.4.1 RS-232, 2/4-Channel Demultiplexer Option (J4)
Table 5-3. Tributary Data Interface Connector (RS-232) 25-Pin
D-Sub (Female)
Pin # Name Signal Function
1 RXDT1 Trib #1 data output (RS-232)
2 RXCT1 Trib #1 clock output (RS-232)
6 RXDT2 Trib #2 data output (RS-232)
21 RXCT2 Trib #2 clock output (RS-232)
22 RXDT3 Trib #3 data output (RS-232)
23 RXCT3 Trib #3 clock output (RS-232)
24 RXDT4 Trib #4 data output (RS-232)
25 RXCT4 Trib #4 clock output (RS-232)
16 DMXSYNC Demux synchronization indicator (TTL, 1 = SYNC)
5 DMXMD Demux mode indicator (TTL, 0 = 2 channel mode)
3 RXD Aggregate channel data output (RS-232)
17 RXC Aggregate channel clock (RS-232)
8 CD Carrier detect output
7 GND Ground
5-6