Agilent Technologies B1500A User's Guide download pdf (Page 89)

Agilent B1500 VXIplug&play Driver User’s Guide, Edition 3 2-73

Driver Functions

agb1500_sweepMiv

Example ViSession vi;

ViStatus ret;

ViInt32 mch[3]; /* measurement channels */

mch[0] = 1;

mch[1] = 2;

mch[2] = 0;

ret = agb1500_setSwitch(vi, mch[0], 1);

ret = agb1500_setSwitch(vi, mch[1], 1);

ViInt32 om = 2; /* output mode: voltage */

ViInt32 sm = 1; /* sweep mode: voltage-single-linear mode */

ViReal64 or = 0; /* output range: auto */

ViReal64 v1 = 0; /* start voltage */

ViReal64 v2 = 1.5; /* stop voltage */

ViInt32 pts = 11; /* point */

ViReal64 th = 0.01; /* hold time */

ViReal64 td = 0.001; /* delay time */

ViReal64 ts = 0.001; /* step delay time */

ViReal64 icomp = 0.1; /* current compliance */

ViReal64 pcomp = 0.2; /* power compliance */

ret = agb1500_resetTimestamp(vi);

ret = agb1500_force(vi, mch[0], om, or, v1, icomp, 0);

ret = agb1500_setIv(vi, mch[1], sm, or, v1, v2, pts, th, td, ts,

icomp, pcomp);

ViInt32 mm[2]; /* measurement mode */

ViReal64 mr[2]; /* measurement range */

mm[0] = 1; /* current mode for mch[0] */

mm[1] = 1; /* current mode for mch[1] */

mr[0] = 0; /* auto range for mch[0] */

mr[1] = 0; /* auto range for mch[1] */

ViInt32 mpts; /* number of measurement steps */

ViReal64 sc[11]; /* source data */

ViReal64 md[22]; /* measurement data */

ViInt32 st[22]; /* status */

ViInt32 tm[22]; /* time stamp data */

ret = agb1500_sweepMiv(vi, mch, mm, mr, &mpts, &sc[0], &md[0],

&st[0], &tm[0]);

For the above example, the array variables sc[], md[], st[], and tm[] will contain the

following data.

sc[n]: Sweep source setup data (voltage).

md[2*n]: Data (current) measured by the mch[0] channel.

md[2*n+1]: Data (current) measured by the mch[1] channel.

st[2*n]: Status for the md[2*n] data.

st[2*n+1]: Status for the md[2*n+1] data.

tm[2*n]: Time stamp data (measurement start time) for the md[2*n] data.

tm[2*n+1]: Time stamp data (measurement start time) for the md[2*n+1] data.

where, n = 0 to 10 (integer).

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Agilent Technologies B1500A User's Guide Page 89

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