Abort command does not return scope to idle state

[lcombs74]

I am using LabWindows/CVI to programmatically control an Agilent DSO6054L oscilloscope.  I have version 2.9 of the ag6000 IVI driver installed.

I am setting up the scope for an edge trigger and then calling the ReadWaveform function.   If the trigger occurs, all is well.  However, if a timeout occurs, I cannot get the scope to return to an idle state.   All of the documentation indicates that calling the ag6000_Abort function will return the scope to the idle state.  This is not the case for me.  ag6000_Abort does return a successful status code, but calls to other scope functions (ag6000_error_query, ag6000_SetAttribute, etc) result in a timeout exception.

I have attached an NI-spy capture file which does show a BFFF0015 status code on the call to ReadWaveform (I believe) but maybe that is because the trigger did not occur.

The following are the steps I am taking to set up the scope for the edge trigger:

 ag6000_init(RESOURCE_NAME, VI_TRUE, VI_FALSE, &m_scopeHandle);

 ag6000_AutoSetup(m_scopeHandle);

 ag6000_ConfigureTimebaseMode(m_scopeHandle, AG6000_VAL_TIMEBASE_NORMAL);   

 ag6000_ConfigureTimebase(m_scopeHandle, AG6000_VAL_TIMEBASE_REF_CENTER, VI_FALSE);

ag6000_ConfigureChannel(m_scopeHandle, m_a_ChannelNames[SCOPE_CHANNEL_1], 8.00, 0.00, AG6000_VAL_DC, 10.00, VI_TRUE);

.

.

ag6000_ConfigureChannel(m_scopeHandle, m_a_ChannelNames[SCOPE_CHANNEL_4], 8.00, 0.00, AG6000_VAL_DC, 10.00, VI_TRUE);

ag6000_ConfigureTrigger(m_scopeHandle, AG6000_VAL_EDGE_TRIGGER, 60e-9);

ag6000_ConfigureRefLevels(m_scopeHandle, 10.0, 50.0, 90.0);   

ag6000_ConfigureTriggerCoupling(m_scopeHandle, AG6000_VAL_DC);

ag6000_ConfigureAcquisitionType(m_scopeHandle, AG6000_VAL_NORMAL); 

ag6000_ConfigureAcquisitionMode(m_scopeHandle, AG6000_VAL_ACQ_MODE_EQTIME); 

ag6000_ConfigureTriggerModifier(m_scopeHandle, AG6000_VAL_NO_TRIGGER_MOD); 

ag6000_ConfigureEdgeTriggerSource(m_scopeHandle, m_a_ChannelNames[source], level, slope);

errorCode = ag6000_ReadWaveform( m_scopeHandle,
                                   m_a_ChannelNames[source],
                                   NUM_SCOPE_DATA_POINTS,
                                   timeoutMs,
                                   chan1Info->waveformData,
                                   &(chan1Info->actualNumPoints),
                                   &(chan1Info->x0),
                                   &(chan1Info->xDelta) );

if (errorCode == AG6000_ERROR_MAX_TIME_EXCEEDED)

{

    ag6000_Abort(m_scopeHandle);

}

Any calls to the scope after this point result in a timeout.

Thanks for any insight!

Laura

[JÞB]

Well ag6000_Abort actually sends :Stop; which is the same as pressing the front panel stop button.

I think you'll need to send "Run" before anything else will work.   Looking at it from another point.  if the trigger never happened the scope IS in the idle-waiting for trigger state and the call to abort is really not needed.