ACQUISITION_START_TIME

Hello

I'm trying to set ACQUISITION_START_TIME to Tektronix DPO3034 through interface USB with CVI.
I managed to install the driver and can communicate with the oscilloscope.
When I write the time-out value (3.5334E - 005) that's what I get from the Spy:

1 IviScope_SetAttributeViReal64 (DPOScope, NULL, ACQUISITION_START_TIME, 3.5334E - 005)
PID: 0 x 00001534 ID of Thread: 0 x 00000874
Departure time: 17:29:42.456 call duration 00:00:00.015
Status: 0 (VI_SUCCESS)

This means that the right control was adopted.

But the delay in the scope comes with 0.4us resolution. This means I can get values of only 3, 56th-005 ACQUISITION_START_TIME, 3.6E - 005 etc..

This is what I get in the spy with GetAttribute imeddiatley command after the SetAttribute above command:

4 IviScope_GetAttributeViReal64 (DPOScope, NULL, ACQUISITION_START_TIME, 3, 56th-005)
PID: 0 x 00001534 ID of Thread: 0 x 00000874
Departure time: 17:34:11.995 call duration 00:00:00.016
Status: 0 (VI_SUCCESS)

(The actual time on the scope screen is also 3, 56th-005...)

Thank you very much for your help!

It was a round of 400ns in the driver of OR who have come after a comment that this is due to the change in the firmware. I'm looking round to 4ns and all is well.

Tags: NI Hardware

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  • Set ACQUISITION_START_TIME Tektronix DPO3034

    Hello

    I'm trying to set ACQUISITION_START_TIME to Tektronix DPO3034 through interface USB with CVI.
    I managed to install the driver and can communicate with the oscilloscope.
    When I write the time-out value (3.5334E - 005) that's what I get from the Spy:

    1 IviScope_SetAttributeViReal64 (DPOScope, NULL, ACQUISITION_START_TIME, 3.5334E - 005)
    PID: 0 x 00001534 ID of Thread: 0 x 00000874
    Departure time: 17:29:42.456 call duration 00:00:00.015
    Status: 0 (VI_SUCCESS)

    This means that the right control was adopted.
    But the delay in the scope comes with 0.4us resolution. This means I can get values of only 3, 56th-005 ACQUISITION_START_TIME, 3.6E - 005 etc..
    This is what I get in the spy with GetAttribute imeddiatley command after the SetAttribute above command:

    4 IviScope_GetAttributeViReal64 (DPOScope, NULL, ACQUISITION_START_TIME, 3, 56th-005)
    PID: 0 x 00001534 ID of Thread: 0 x 00000874
    Departure time: 17:34:11.995 call duration 00:00:00.016
    Status: 0 (VI_SUCCESS)
    (The actual time on the scope screen is also 3, 56th-005...)

    Thank you very much for your help!

    I've corrected the pilot...

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