Rs-422 (ibs) or 8 kbps esc (idr) (j2), Ibs/rs-422 (j2) – Comtech EF Data UB-530 User 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
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