HP Spectrum Analyzer LabVIEW Driver/Example

I'm trying to use LabVIEW to control an HP E4403B spectrum analyzer. The LabVIEW I installed is 2009, the drive/example I downloaded is from the link below:
http://sine.ni.com/apps/utf8/niid_web_display.download_page?p_id_guid=309EBE8FF8BC0E76E0440003BA7CCD...
I tried all the example program but none of them worked. Some commands like *IDN workes okay, but if I run the example programs, it will cause the spectrum analyzer "Undefined header" error.
Any one with experience of using HP spectrum analyzer can give me some clue about what's wrong?
Best regards,
Guangde

Hi Dennis,
Thank you for responding to my message.
I deleted some of the commands from two of the subVIs, the error is gone. But the program is still not working right. The following is some details:
The program I used is: Agilent ESA PSA Series Acquire Trace which is an example of Agilent ESA PSA Series.
In the subVI: Configure Sweep Coupling.vi, I deleted WE:TIME:AUTO ON; and :BWID:VID:RAT:AUTO ON; from the following commands:
WE:TIME:AUTO ON;
:BWID:AUTO ON;
:BWID:VID:AUTO ON;
:BWID:VID:RAT:AUTO ON;
In the subVI: Configure Acquisition.vi, I deleted ET:AUTO ON;
:INIT:CONT OFF;ET:AUTO ON;ISP:WIND:TRAC:YPAC LIN;ISP:WIND:TRAC:YDIV 10.000000;
So I can run the program through without an error message. But it doesn't seem it's measuring. Another problem is that it runs very slow, about 2 to 3 seconds per cycle.
Please let me know what I need to do after I deleted the three commands.
Thanks,
Guangde

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"Randy Solomonson" wrote in message
news:[email protected]...
> Hello-
>
> Unfortunately I was unable to find a driver for this instrument either
> at http://ni.com/idnet. This leaves you with one of a couple options.
> It may be possible to modify an existing driver to work with this
> instrument. Otherwise, http://www.ni.com/devzone/idnet/other.htm
> states a few options to obtaining a driver. Drivers are developed
> based on demand and popularity so the more requests, the greater the
> possibility that one will be developed. It would also be beneficial
> to notify the instrument manufacturer.
>
> Randy Solomonson
> Application Engineer
> National Instruments
>

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