National Instruments NI PXI-5422 用户手册
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45
NI PXI-5422 Calibration Procedure
Adjusting the Main Path Post-Amplifier Gain and Offset
1.
Call
niFgen_WriteBinary16AnalogStaticValue
(niFgen Write
Binary 16 Analog Static Value VI) to set the main DAC value using
the following parameters:
the following parameters:
•
vi: The session handle returned from
niFgen_InitExtCal
•
channelName:
"0"
•
value:
0
2.
Call
niFgen_SetAttributeViBoolean
to set the analog filter state
(niFgen property node: Output Attributes»Analog Filter Enabled)
using the following parameters:
using the following parameters:
•
vi: The session handle returned from
niFgen_InitExtCal
•
channelName:
"0"
•
attributeID:
NIFGEN_ATTR_ANALOG_FILTER_ENABLED
•
value:
VI_FALSE
3.
Call
niFgen_SetAttributeViReal64
to set the pre-amplifier
attenuation (niFgen property node: Calibration»Pre-Amplifier
Attenuation) using the following parameters:
Attenuation) using the following parameters:
•
vi: The session handle returned from
niFgen_InitExtCal
•
channelName:
"0"
•
attributeID:
NIFGEN_ATTR_PRE_AMPLIFIER_ATTENUATION
•
value:
0
4.
Call
niFgen_SetAttributeViInt32
to set the gain DAC value
(niFgen property node: Calibration»Gain DAC Value) using the
following parameters:
following parameters:
•
vi: The session handle returned from
niFgen_InitExtCal
•
channelName:
"0"
•
attributeID:
NIFGEN_ATTR_GAIN_DAC_VALUE
•
value:
2000
5.
Repeat steps 6 through 9 for each of the eight iterations listed in
Table 9, changing the Analog Path, Post-Amplifier Attenuation, and
Current Configuration values for each iteration.
Table 9, changing the Analog Path, Post-Amplifier Attenuation, and
Current Configuration values for each iteration.