Motorola R-2550 Programming Reference Manual page 14

The RS-232 is a 2.5pin female 9" connector that supports connectivity to the conuoller or printer output via
port
serial connection. The following table describes the pin definitions.
Pin(s)
2
3
4
5
6
7
8
9-19
20
21
22
23-25
DB-25
Analyzer
R x D 3
CTS
DSR
DCD
DTR 20
GND
For printer use, pins 5 and
communications without any handshaking capabilities.
Motorola Communications Analyzer
Programming Reference
Name
GND
ground
TXD transmit
receive data
RTS request to send
CTS
clear to send
DSR
data set ready
SIG GND
signal
data carrier detect (not connected)
not used
data terminal ready
not used
Ring Indicator (not connected)
not used
2
5
6
8
7
Cable Diagram: PN 3080387B59
20 of
this port should be tied together inside the cable to the printer.
4
Description
data
ground
DB-9
Printer or PC
2 R x D
3 T x D
7
4
8
5
Note
RTS
DTR
CTS
GND