DSO1012A Agilent SCOPE

[YGraphPopup]

Need to measure time interval between CHAN1 and CHAN2.

When I am using ag1000ni_ReadDelayMeasurement (ag1000ni, "CHAN2", "CHAN1",
             AG1000NI_VAL_FALLING, 5000, val));

I have error in measurement.

Can I have an example of how to make this measurement?

Thanks

[JL@NI]

Hello YGraphPopup,

Could you post information on the error you are seeing?

Regards,

Jeff L.

[YGraphPopup]

Hi Jeff,

I have error -1073807339

Both channels have a waveform signal

Thanks

[JL@NI]

YGraphPopup,

Do either of these links (VISA Error 1073807339 or Why do I Receive Timeout Error -1073807339) pertain to the error message? Do you have a screen capture of the error message? Does the error message state something like: "Error -1073807339 occurred. Timeout expired before operation completed."?

Regards,

Jeff L.

[YGraphPopup]

Hi Jeff,

please find screen capture

Thanks

[JL@NI]

YGraphPopup,

Have you tried to change the attribute "VI_ATTR_TMO_VALUE"? The return value you are getting indicates that the Read/Write operation did not complete.

Jeff L.

[YGraphPopup]

Hi Jeff,

changing VI_ATTR_TMO_VALUE into:

#define VI_ATTR_TMO_VALUE           (0x2FFF001AUL) 

or

#define VI_ATTR_TMO_VALUE           (0x4FFF001AUL) 

cause earlier error -1073807331

See attached snapshot

Thanks

[Wolfgang]

Hi,

you should not change the definition of a system wide constant, but the value of an attribute...

Try viSetAttribute ( session_handle, VI_ATTR_TMO_VALUE, timeout_value ); note that timeout_value is in milliseconds

[YGraphPopup]

Hi Jeff,

I have tried following attributes: 1000,10000 and 15000, all with same error -1073807339

Thanks

[JL@NI]

Hello YGraphPopup,

Have you attempted the same command string in a VISA Test Panel? If the result is different, it would be helpful to get an NI I/O Trace for the VISA Test Panel and the LabWindows/CVI execution. Also, are you interfacing with the device through USB or GPIB? What firmware version are you using?

Regards,

Jeff L.