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E1437A User's Guide
VXI plug&play Programming Reference
hpe1437_trigger_delay_actual_get
Returns the actual trigger delay from the most recent trigger event.
VXIplug&play Syntax
#include "hpe1437.h"
ViStatus hpe1437_trigger_delay_actual_get(ViSession id, ViPReal64
actualDelayPtr);
Parameters
id is the VXI instrument session pointer returned by the hpe1437_init function.
actualDelayPtr contains the returned actual delay from the most recent trigger event
and the resulting first output sample time. This delay value provides more accuracy
than the delay parameter alone since it includes a measurement of the fractional part of
the output sample period between the actual trigger event and the next available output
sample. The trigger delay accuracy improves to one ADC sample clock period rather
than one output sample period. This can result in a substantial improvement in
accuracy when narrow bandwidth decimation filtering is used. The
hpe1437_trigger_delay_actual_get function must be called for each new trigger
event that requires precise delay measurement. The actual delay is still expressed in
output sample periods, however, it can take on non-integer values.
Effect on Active
This command does not abort any measurement in progress.
Measurement
See Also
hpe1437_init, hpe1437_trigger_setup
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