User`s guide

2-6 Agilent 4155C/4156C VXIplug&play Driver User’s Guide, Edition 1

Driver Functions

hp4156b_abortMeasure

This function aborts the 4155/4156’s present operation, such as the measurement

executed by the hp4156b_startMeasure function, the pulse output by the

hp4156b_forcePulse function, the stress force by the hp4156b_stress function, and

so on.

Syntax ViStatus _VI_FUNC hp4156b_abortMeasure(ViSession vi);

Parameters vi Instrument handle returned from hp4156b_init( ).

hp4156b_addSampleSyncIv

This function specifies the constant current source or constant voltage source used

for the sampling measurements, and sets the parameters. Source output starts at the

beginning of the sampling measurement (beginning of the hold time), and stops at

the end of 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.

Syntax ViStatus _VI_FUNC hp4156b_addSampleSyncIv(ViSession vi, ViInt32 channel,

ViInt32 mode, ViReal64 range, ViReal64 base, ViReal64 bias, ViReal64 comp);

Parameters vi Instrument handle returned from hp4156b_init( ).

channel Channel number of the source unit. 1 to 6 (SMU1 to SMU6),

21 (VSU1), 22 (VSU2), 27 (PGU1), or 28 (PGU2)

mode Output mode. 1 (current output, only for SMU) or 2 (voltage

output).

range Output range. 0 (auto ranging) or positive value (limited auto

ranging). See below.

For current output: 1E-11 to 1.0 A, or 0.

For voltage output: 2.0 to 200.0 V, or 0.

base Base value. -1.0 to 1.0 A for current output, -200.0 V to 200.0 V

for voltage output.

bias Bias value. -1.0 to 1.0 A for current output, -200.0 V to 200.0 V

for voltage output.

comp Compliance value. -200.0 V to 200.0 V for voltage compliance,

-1.0 to 1.0 A for current compliance.