03-25-2012 08:18 AM
Yeah, I have checked with the manual of the instrument.
03-25-2012 08:50 AM
Then it would appear that whatever changes you made to the VI messed it up.
03-25-2012 08:26 PM
But I still can't find the problem caused the failure of the measurement.
03-30-2012 03:24 PM
Hey Colin,
Which of the below shipping examples for this driver did you start with in order to create your Agilent ESA PSA Phase Noise Log Plot Measurement VI? The error that you are receiving is usually thrown when an instrument receives an unknown command. If you believe that the command string that you are writing is correct from what you have read in the programmers manual, then it might be a good idea to contact Agilent and ask them to verify it for you. Also, if you are looking to add extra functionality such as adding a decade table, then you will need the commands to return this table information and you can then display it in a LabVIEW array or other front panel control.
I hope this helps. Have a good weekend!
Lars
NI R&D
04-06-2012 04:56 AM
Hi Lars,
Thank you for your reply.
The error occured in the subVI "Configure Log Plot.vi", the error is "-113, undefined header"(see attachment), could you help me to analyze the error?
08-31-2013 11:59 PM
Hi, Colin,
Maybe you already resolve the problem. here is what I have found out: the command ":LPL:FREQ:SPAN:BAND:RAT:AUTO ON; " should be ":LPL:FREQ:SPAN:BAND:RES:RAT:AUTO ON;" for auto ratio configuration. otherwise, add "RES" in between "BAND:RAT" for manually setup.
It works find with my software without the "undifined file header" error.
regards
09-04-2013 03:34 PM - edited 09-04-2013 03:34 PM
Hello Colin,
The manual states that "RES" is an optional instruction. That being said, would you mind removing the "RES" command and let us know if you experience or don't experience the "undefined file header" error?
09-04-2013 04:24 PM
Hi, Shawn
I tested with my PSA. although "RES" is an optional instruction, the system gave me "undefined file header" error when I removed it. Don't know why. but it just fixed the problem.
best regards
CQ
09-05-2013 03:48 PM
Which firmware version are you using?
09-11-2013 04:51 PM
the firmware is A11.04.