Comtech EF Data UB-530 - Manual (Page 19)

Breakout Panel Revision 2
Connectors and Switches MN/UB530.IOM
2–7
2.2.2 RS-422 (IBS) or 8 kbps ESC (IDR) (J2)
The RS- 422 or 8 kbps ESC (IDR) connection is a 37-pin D connector located at the front
of the breakout panel. Screw locks are provided for mechanical security of the mating
connector.
The
connection will operate as either an IBS (standard RS-422) or an IDR (8-kbps ESC)
I/O, depending on the configuration switch settings on the rear panel (see Section 2.1).
2.2.2.1 IBS/RS-422 (J2)
Signal Function Name Pin #
Ground GND 1, 19, 20, 37
TX octet TXO–A 3
TXO–B 21
Send data SD–A 4
SD–B 22
Send timing ST–A 5
ST–B 23
Receive data RD–A 6
RD–B 24
Request to send RTS–A 7
RTS–B 25
Receive timing RT–A 8
RT–B 26
Clear to send CTS–A 9
CTS–B 27
Data mode DM–A 11
DM–B 29
Receiver ready RR–A 13
RR–B 31
External clock EXC–A 15
EXC–B 33
RX octet RXO–A 16
RXO–B 34
Terminal timing TT–A 17
TT–B 35