User`s guide

17 Functions — Alphabetical List
17-66
The behavior of peekdata depends on the settings of the Running and the Logging
properties.
Running Logging Object State Result
On Off The object has been started
but is waiting for a trigger.
(TriggerType is set to 'manual'
or 'hardware'). No data has been
acquired so none is available.
peekdata returns a single frame
of data and issues a warning, if you
requested more than one frame.
On On The object has been started, a
trigger has executed, and the
object is actively acquiring data.
peekdata returns the n most
recently acquired frames of data.
The frames are not removed from
the buffer.
Off Off The object has stopped running
because it acquired the requested
number of frames or you called the
stop function.
peekdata can be called once
to return the n most recently
acquired frames of data, assuming
FramesAvailable is greater than
0. Otherwise, peekdata returns an
error. The frames returned are not
removed from the memory buffer.
The number of frames available to peekdata is determined by recalling the last frame
returned by a previous peekdata call, and the number of frames that were acquired
since then.
peekdata can be used only after the start command is issued and while the object is
running. peekdata can also be called once after obj has stopped running.
Note: The peekdata function does not return any data while running if in disk logging
mode.
See Also
getdata | getsnapshot | propinfo | start | imaqhelp | imaqmontage