Special Considerations When Using The Gpib-Com - National Instruments GPIB-COM User Manual

Configuration and Installation
7. Check the installation.
8. Replace the expansion slot cover of your computer.
9. Connect the GPIB cable to the GPIB-COM.

Special Considerations When Using the GPIB-COM

The GPIB-COM does not support XON/XOFF protocols. If your application software uses
XON/XOFF protocols, send your printer and plotter output to a file on disk. From DOS, send
your file to the GPIB-COM by using the DOS command:
copy filename COM1:
copy filename COM2:
The DOS MODE command is used to set the RS-232 parameters that will be used when COM1
and COM2 are accessed through DOS. Sometimes a timeout error may occur when writing
through the GPIB-COM to a slow device such as a printer or a plotter. If this happens, use the
MODE command to disable the timeout function by typing MODE COM1:12,,,,P. Some
software applications use the COM port baud rate setting to control the data transmission speed.
To obtain the fastest possible transfer rates, set the baud rate setting to 9600 baud. The P at the end
disables the timeout. For more information on the MODE command, refer to the IBM Disk
Operating System Manual. This command can also be used in an autoexec.bat file to disable
timeouts when you start up the computer.
GPIB-COM User Manual 2-8 © National Instruments Corporation
Section Two