National Instruments NI PXI-5422 用户手册
NI PXI-5422 Calibration Procedure
38
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2.
Call
niFgen_SetAttributeViReal64
to set the post-amplifier
attenuation (niFgen property node: Calibration»Post-Amplifier
Attenuation) using the following parameters:
Attenuation) using the following parameters:
•
vi: The session handle returned from
niFgen_InitExtCal
•
channelName:
"0"
•
attributeID:
NIFGEN_ATTR_POST_AMPLIFIER_ATTENUATION
•
value:
0
3.
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
4.
Repeat steps 5 through 8 for each of the 10 iterations listed in Table 7,
changing the Analog Filter Enable, Pre-Amplifier Attenuation, and
Current Configuration values for each iteration.
changing the Analog Filter Enable, Pre-Amplifier Attenuation, and
Current Configuration values for each iteration.
Table 7. Attributes and Values for Main Path Pre-Amplifier Offset
Iteration
Analog Filter
Enable
Pre-Amplifier
Attenuation
Current Configuration
1
VI_FALSE
0
NIFGEN_VAL_CAL_CONFIG_MAIN_PATH_FILTER_OFF_0DB
2
VI_FALSE
3
NIFGEN_VAL_CAL_CONFIG_MAIN_PATH_FILTER_OFF_3DB
3
VI_FALSE
6
NIFGEN_VAL_CAL_CONFIG_MAIN_PATH_FILTER_OFF_6DB
4
VI_FALSE
9
NIFGEN_VAL_CAL_CONFIG_MAIN_PATH_FILTER_OFF_9DB
5
VI_FALSE
12
NIFGEN_VAL_CAL_CONFIG_MAIN_PATH_FILTER_OFF_12DB
6
VI_TRUE
0
NIFGEN_VAL_CAL_CONFIG_MAIN_PATH_FILTER_ON_0DB
7
VI_TRUE
3
NIFGEN_VAL_CAL_CONFIG_MAIN_PATH_FILTER_ON_3DB
8
VI_TRUE
6
NIFGEN_VAL_CAL_CONFIG_MAIN_PATH_FILTER_ON_6DB
9
VI_TRUE
9
NIFGEN_VAL_CAL_CONFIG_MAIN_PATH_FILTER_ON_9DB
10
VI_TRUE
12
NIFGEN_VAL_CAL_CONFIG_MAIN_PATH_FILTER_ON_12DB