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National Instruments Corporation
29
NI 5421 Specifications
Calibration
Power
Table 11.
Specification
Value
Comments
Self-Calibration An onboard, 24-bit ADC and precision voltage reference are
used to calibrate the DC gain and offset. The self-calibration
is initiated by the user through the software and takes
approximately 75 seconds to complete.
—
External
Calibration
The External Calibration calibrates the VCXO, voltage
reference, DC gain, and offset. Appropriate constants are
stored in nonvolatile memory.
—
Calibration
Interval
Specifications valid within 2 years of External Calibration.
—
Warm-up Time
15 minutes
—
Table 12.
Specification
Typical Operation
Overload Operation
Comments
+3.3 VDC
1.9 A
2.7 A
Typical.
Overload
operation occurs
when CH 0 is
shorted to
ground.
+5 VDC
2.0 A
2.2 A
+12 VDC
0.46 A
0.5 A
–12 VDC
0.01 A
0.01 A
Total Power
21.9 W
26.0 W