Agilent Technologies B1500A User Manual

4-10 Agilent B1500 VXIplug&play Driver User’s Guide, Edition 3
Programming Examples for C++ Users
Multi Channel Spot Measurement
Measurement
Result Example
Ic = 3.846500 mA (Time: 0.093200 sec)
Ib = 0.018970 mA (Time: 0.094300 sec)
hfe = 202.767528
mch[0] = collector; /* 31 */
mch[1] = base;
mch[2] = 0;
mode[0] = 1;
mode[1] = 1;
range[0] = 0;
range[1] = 0;
ret = agb1500_resetTimestamp(vi); /* 38 */
ret = agb1500_force(vi, emitter, agb1500_VF_MODE, 0, 0, 0.2, 0);
ret = agb1500_force(vi, base, agb1500_VF_MODE, 0, vb, ibcomp, 0);
ret = agb1500_force(vi, collector, agb1500_VF_MODE, 0, vc, iccomp, 0);
check_err (vi, ret); /* 42 */
ret = agb1500_measureM(vi, mch, mode, range, &md[0], &st[0], &tm[0]);
check_err (vi, ret); /* 45 */
ret = agb1500_zeroOutput(vi, agb1500_CH_ALL); /* 47 */
check_err (vi, ret); /* 48 */
printf("Ic = %8.6f mA (Time: %8.6f sec)\n", md[0] * 1000, tm[0]);
printf("Ib = %8.6f mA (Time: %8.6f sec)\n", md[1] * 1000, tm[1]);
printf("hfe = %10.6f \n", md[0]/md[1]); /* 52 */
ret = agb1500_setSwitch(vi, agb1500_CH_ALL, 0); /* 54 */
check_err (vi, ret); /* 55 */
}
Line Description
31 to 37 Defines the value for the variables used for the measurement channel.
38 Resets time stamp.
39 to 41 Applies voltage to device.
44 Performs multi channel spot measurement.
47 Sets the specified port to the zero output state.
50 to 52 Displays the measurement result data.
54 Disables all ports.
42, 45, 48 and 55 Calls the check_err subprogram (shown in Table 4-1) to check if an error status is
returned for the previous line.
56 End of the perform_meas subprogram.

Agilent Technologies B1500A Specifications

General

Brand	Agilent Technologies
Model	B1500A
Category	Measuring Instruments
Language	English