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SCXI-1520 Calibration Procedure
4
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3.
Configure the hardware with Measurement & Automation Explorer
(MAX). For more information on configuring the system, refer to the
documentation for the DAQ device and the SCXI-1520.
Verifying Gain and Offset Errors
The verification procedure determines how well the SCXI-1520 module
is meeting its specifications. You can use this information to select the
appropriate calibration interval for your application.
Complete the following steps to verify gain and offset errors of the
SCXI-1520.
1.
Read the
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 set up 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