Question about instrument driver

[Bill Choy]

Hi,
I'm now working for an application of HP4194A Impedance/Gain-phase Analyzer. I tried to use the HP4194A Getting Started.vi to study the instrument driver. However, I got an error message when I run the program as below.

Error-1073807265 occurred at VISA Write in HP4194A
Reset vi->HP4194A Initialize.vi->HP4194A Getting Started.vi.
Possible reasons:
VISA:(Hex 0xBFFF005F) No listeners condition is detected (both NRFD and NDAC are deasserted).

What should I do? I have already set the right address and connected properly. Moreover, are there any user manual or reference handbook for this driver? Where can I find these?

[Randy Solomonson]

After making sure you have the latest driver from (http://www.ni.com/support/gpib/versions.htm), the first step in determining the functionality of your GPIB card is to run the "Getting Started Wizard" found in Start/Programs/National Instruments/NI-488.2.

If the Getting Started Wizard Fails:
-Read the instructions on that utility.
-If you are using a PCI card, try switching slots.
-In Windows NT, you may want to verify your setup in Control Panel/GPIB. In this dialog, click GPIB0 and click "Board Type". Be sure that the board matches what is installed in your system. If you can't see the serial number see KB#1N88Q5RM (http://digital.ni.com/public.nsf/websearch?SearchView&Query=1N88Q5RM)
-In other versions of Windows, you should be able to see
the GPIB interface in the "Device Manager".

The next step is to communicate with the instrument in the Measurement & Automation Explorer (MAX). In MAX under "Devices and Interfaces" you should be able to find your card. Right-click and do a "Scan for Instruments".

If the scan fails:
-Be sure the instrument is powered on and online.
-Be sure the cable is connected tight and screwed on.
-Try switching cables. Shorter cables are preferred.
-If using multiple instruments, try communicating to one instrument at a time.

Randy Solomonson
Application Engineer
National Instruments