Agilent Technologies B1500A User's Guide download pdf (Page 62)

2-46 Agilent B1500 VXIplug&play Driver User’s Guide, Edition 3

Driver Functions

agb1500_setAdc

This function sets the integration time or number of samples that is taken or

averaged for the measurement. See also “agb1500_setAdcType”.

Syntax ViStatus _VI_FUNC agb1500_setAdc(ViSession vi, ViInt32 adc,

ViInt32 mode,ViInt32 value, ViInt32 autozero);

Parameters vi Instrument handle returned from agb1500_init( ).

adc A/D converter type. 0 (high-speed) or 1 (high-resolution).

mode Integration/averaging mode. 0 (auto), 1 (manual), or 2 (PLC).

value Coefficient for a reference value to set the integration time or

number of averaging samples. 1 to 1023.

The reference value depends on the adc and mode settings:

• For high-resolution ADC:

The reference value is the initial value for auto mode, 80 μs

for manual mode, or 1/power line frequency for PLC mode.

• For high-speed ADC:

The reference value is the initial value for auto mode, 1

sample for manual mode, or 128 samples for PLC mode.

where initial value is the value automatically defined by the

instrument, and you cannot change.

autozero ADC zero function. 0 (off) or 1 (on).

agb1500_setAdcType

This function selects the A/D converter type for the measurement channel.

Syntax ViStatus _VI_FUNC agb1500_setAdcType(ViSession vi, ViInt32 channel,

ViInt32 adc);

Parameters vi Instrument handle returned from agb1500_init( ).

channel Slot number of the slot that installs the SMU used to perform

measurement. See Table 2-2. Set 0 to select all SMUs.

adc A/D converter type. 0 (high-speed) or 1 (high-resolution).

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Agilent Technologies B1500A User's Guide Page 62