National Instruments SCXI-1520, Процедура калибровки

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© National Instruments Corporation 9 SCXI-1520 Calibration Procedure
Adjusting for Gain, Offset, and Excitation Errors
The Determining Gain Errors and Adjusting Calibration Constants
sections explain how to determine the gain, offset, and excitation errors of
the SCXI-1520 and how to adjust the calibration constants to correct for
these errors.
Determining Gain Errors
Complete the following steps to determine the gain errors of the
SCXI-1520.
1. Read the Test Conditions section.
2. Refer to the specifications in Table 2.
3. Call
Calibrate_E_Series
to minimize the uncertainty associated
with the DAQ device measurements. Set the following parameters:
• deviceNumber —The value assigned by MAX
• calOP —
ND_SELF_CALIBRATE
• setOfCalConst —
ND_USER_EEPROM_AREA
• calRefVolts —0.0
4. Call
AI_Configure
to put the DAQ device in bipolar mode. Set the
following parameters:
• deviceNumber —The value assigned by MAX
• chan —0
• inputMode —0
• inputRange —0
• polarity —0
• driveAIS —0
5. Call
SCXI_Track_Hold_Setup
to configure the track-and-hold
circuitry of the SCXI-1520. Set the following parameters:
• SCXIchassisID —The value assigned by MAX
• moduleSlot —1
• inputMode —2
• source —0
• send —0
• holdCount —1
• DAQdeviceNumber —The value assigned by MAX