Measurement Computing 488/p rev.1.0 - Manual (Page 3)

The Serial488/p is shipped with a standard, straight-through serial cable, CA-35. If
this cable does not meet your needs, match our cable to the cable wiring and
pinout diagrams shown in Figures 2 and 3.
IBM PC/XT/PS2 to Serial488/p IBM AT to Serial488/p
D&25 Female DB-25 Male DB-9 Female DB-25 Male
TXD 2 2 RXD DCD 1 8 DCD
RXD 3 3 TXD RXD 2 3 TXD
RTS 4 4 CTS TXD 3 2 RXD
CTS 5 5 RTS DTR 4 20 DTR
DSR 6 6 DSR GND 5 7 GND
GND 7 7 GND DSR 6 6 DSR
DOD 8 8 DOD RTS 7 4 CTS
DTR 20 20 DTR CTS 8 5 RTS
Figure 2: IBM PC/XT/PS2 to Figure 3: IBM AT to Serial488/p
Serial488/p Wiring (CA-35) Wiring (CA-35 with adapter)
Now set the printer address to 5 or LISTEN ALWAYS. The Serial488/p issues a
LISTEN command to the device at address 5 before each character is sent.
Printers in LISTEN ALWAYS mode will ignore these LISTEN commands.
Initialization
If your computer is a PC, at the DOS prompt type the following command line to
initialize your PC's serial port for operation:
MODE COMn:9600,N,8,1
where n is the number of the COM port being used. A return display of this
command prompt indicates successful initialization. The Serial488/p is now
ready for operation.
Verification
Once the PC has been initialized, issue one of the following commands to ensure
that your system has been properly configured and connected.
If you have an IEEE 488 printer, at the DOS prompt type the following command:
ECHO HELLO WORLD > COMn
where n is the number of the COM port being used. The
message HELLO WORLD should appear at the printer.