error in acquiring waveform from the agilent 54621A oscilloscope .

[ranjana.prabhu]

error  1074003951 occurs when  acquiring waveform from  the agilent 54621A oscilloscope.

I have installed

agilent 546xx series instrument driver

NI VISA 14.0

[Dennis_Knutson]

That's an id query failure. It's easy to check by setting the id query? input to false. It's also easy to troubleshoot by going to the block diagram and probing the string returned by the VISA Read and seeing what it is supposed to be.

[ranjana.prabhu]

If i set the id query(*IDN?) to false then error 1074000000 occurs oscilloscope displays unidentified header.

I am new to labview programming pls help.

[ranjana.prabhu]

If i set the id query to false then error 1074000000 occurs oscilloscope displays unidentified header.And if the id query is changed (:WAVeform:view?)then the same error 1074003951 repeats

[Dennis_Knutson]

That is not the id query. The command in the Initialize function is *IDN?. Did you probe the output of the read in that function as I suggested? You should only be working with the Initialize function, not the entire example.

[ranjana.prabhu]

The *IDN command is sent and i have chequed the VISA read it returns the correct string .The error still exists i have attached the block program

[Dennis_Knutson]

I don't the VI. I need the string that is returned. The acquire waveform will not return an id error. The initialize function does that.

[ranjana.prabhu]

Ya the id error is in intialization . VISA  Read returns AGILENT TECHNOLOGIES ,54621A,MY40004117,A.02.02.

[Dennis_Knutson]

I don't have the instrument to test. Are you using a GPIB connection?

[ranjana.prabhu]

No RS 232.