Agilent Technologies B1500A Guia do Utilizador descarregar pdf (Página 196)

4-40 Agilent B1500 VXIplug&play Driver User’s Guide, Edition 3

Programming Examples for C++ Users

Leakage Current Measurement

Measurement

Result Example

Id = 12.240000 mA

Vd = -5.00 to 5.00 V

Vg = 0.00 V

ret = agb1500_setIleak(vi, drain, 0, vd, idcomp, start, hold,

delay); /* 29 */

check_err (vi, ret);

ret = agb1500_measureIleak(vi, drain, agb1500_SHORT_INTERVAL,

&meas, &status); /* 32 */

check_err (vi, ret);

ret = agb1500_zeroOutput(vi, agb1500_CH_ALL); /* 35 */

check_err (vi, ret);

printf("Id = %9.6f mA\n", meas * 1000); /* 38 */

printf("Vd = %5.2f to %4.2f V\n", start, vd);

printf("Vg = %4.2f V\n", vg);

ret = agb1500_setSwitch(vi, agb1500_CH_ALL, 0); /* 42 */

check_err (vi, ret);

}

Line Description

29 Sets the quasi pulsed voltage source.

32 Performs quasi pulsed spot measurement. Leakage current will

be defined as the current when the target voltage (vd) is applied

to device terminal where the source channel is connected.

35 Sets the specified port to the zero output state.

38 to 40 Displays the measurement result data.

42 Disables all ports.

30, 33, 36,

and 43

Calls the check_err subprogram (shown in Table 4-1) to check if

an error status is returned for the previous line.

44 End of the perform_meas subprogram.

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Agilent Technologies B1500A Guia do Utilizador Página 196