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© National Instruments Corp. 6-1 NI-488.2 User Manual for Windows
Chapter 6
GPIB Spy
This chapter explains how to use the GPIB Spy utility to monitor and debug your
application program.
Overview
GPIB Spy is a GPIB application monitor utility for Windows applications. It monitors
the NI-488 and NI-488.2 calls made to the NI-488.2 driver for Windows, and records and
displays information about the calls. You can use the GPIB Spy application to locate and
analyze errors in your application or in the configuration of the NI-488.2 software.
Starting GPIB Spy
Start GPIB Spy by double-clicking on the GPIB Spy icon in the GPIB group in the
Program Manager. This activates GPIB Spy and brings up the main GPIB Spy
window. All NI-488 and NI-488.2 calls made while GPIB Spy is active are recorded in
the main GPIB Spy window. GPIB Spy can be turned on and off by choosing SpyOn
from the Spy menu. When GPIB Spy is on, the caption on the main GPIB Spy window
is "GPIB Spy (recording)." When GPIB Spy is off, the caption is "GPIB Spy."
Figure 6-1 shows the main GPIB Spy window with several NI-488 calls recorded in it.
Figure 6-1. Main GPIB Spy Window