automation of spectrum analyzer

[conchita]

Hi

I am using labview to automate the setup of the spectrum analyser E4448A. I was able to set the start and stop frequencies and obtain a waveform. However I can't find a function in the driver for E4448A to set the CF step. Can somebody help??

thanx in advance

[antea06]

The step size depends on whether the frequency has been coupled to the
span width using the CS command.When coupled, the step
size is 10% of the span, or one major graticule division; when
uncoupled, the step size is determined by the SS command.

In the first case the command to send is "CS;"

In the second case the command to send is "SS <value>[HZ|KZ|MZ|GZ];" (for example "SS 100KZ;")

To send command you can use labview example: \Program Files\National Instruments\LabVIEW 8.6\examples\instr\smplgpib.llb\LabVIEW - GPIB.vi

Regards

[conchita]

Thank you for your help.

Do you know where I can find the programing manual for E4448A. At this moment I found a manual called "programming conversion guide" It has commands for setting up the spectrum analyzer. Eg: The SS command for CF step is given "[:SENSe]:FREQuency:CENTer:STEP[:INCRement] <freq>" Can you please tell us where can we find the full command. In other words what goes in <......> or [.........] place.

Thank you

[Dennis_Knutson]

Just go to Agilent and do a search for E4448A. There are 2 main programming manuals but the main one is "PSA and ESA Spectrum Analyzer User's and Programming Guide Volume 1".

Where or how did you do your search that you could not find this and the other manuals?

[conchita]

Thank you..I did search on the Agilient web page and was not able to find a proper programming guide...

[antea06]

I found the command in "HP8566B/68B code compatibility Guide" - Agilent - ESA and PSA Series Spectrum Analyzers

Bye

[Dennis_Knutson]

You mean that out of all these manuals, there was nothing you could use?

[conchita]

yes...I did find some commands in the manuals. Its just that I am quite new to this and was not sure how to use them..

Thanks for your help. It is much appreciated.

[conchita]

Thank you.. Yes i did manage to find it..