2-14 Agilent 4155C/4156C VXIplug&play Driver User’s Guide, Edition 4
Driver Function Reference
hp4156b_addSampleSyncPulse
hp4156b_addSampleSyncPulse
This function specifies pulse voltage source and sets the parameters. The pulse
source is used for the sampling measurements. Pulse outputs start at the beginning
of the sampling measurement (beginning of the hold time), and stop at the end of the
last sampling measurement point or stop at the last pulse if it comes earlier than the
last sampling measurement point.
Sampling measurement channels are defined by the hp4156b_sample function, and
sampling measurement timing is defined by the hp4156b_setSample function.
If you want to let the pulse output synchronize with the sampling measurement
timing, you should define carefully both the hp4156b_addSampleSyncPulse timing
parameters (count, period, width, delay, rise and fall) and the hp4156b_setSample
timing parameters.
Syntax ViStatus _VI_FUNC hp4156b_addSampleSyncPulse(ViSession vi, ViInt32 channel,
ViReal64 base, ViReal64 peak, ViInt32 count, ViReal64 period, ViReal64 width,
ViReal64 delay, ViReal64 rise, ViReal64 fall);
Parameters vi Instrument handle returned from hp4156b_init( ).
channel Channel number of the pulse source. 27 (PGU1) or 28 (PGU2).
base Pulse base value (in V). See Table 2-8.
peak Pulse peak value (in V). See Table 2-8.
count Pulse count (number of pulses, 1 to 65535) or 0 (pulse output
free run mode).
period Pulse period (in seconds). See Table 2-9.
width Pulse width (in seconds). See Table 2-9.
delay Pulse delay time (in seconds). See Table 2-9.
rise Pulse leading transition time (in seconds). See Table 2-10.
fall Pulse trailing transition time (in seconds). See Table 2-10.
hp4156b_addStressSyncIv
This function specifies dc stress source and sets the parameters. Up to 4 stress
sources can be used at once. Use this function and/or hp4156b_addStressSyncPulse
to set the stress sources.
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