• Test limits in this document are based on the October 2014 edition of the NI PXIe-4112
Specifications.
• Set the niDCPower Aperture Time property or
NIDCPOWER_ATTR_APERTURE_TIME attribute to 1 power-line cycle (PLC). Set the
niDCPower Aperture Time Units property or
NIDCPOWER_ATTR_APERTURE_TIME_UNITS to power line cycles.
• Do not use the NI-DCPower Soft Front Panel (SFP) to request test points for any
adjustment functions because you cannot set aperture time using the SFP.
• Ensure that properties or attributes for the device that are not specified in calibration
procedures are set to their default values.
• Plug the chassis and the instrument standard into the same power strip to avoid ground
loops.
• When making measurements, configure any specified digital multimeters (DMMs) with
the best available levels and limits for each specified test point.
An external power supply capable of providing 48 V and greater than 3.5 A should be
connected to the AUX Power front panel input at all times.
Temperature conditions specific to verification procedures:
• Maintain an ambient temperature of 23 °C ± 5 °C.
Temperature conditions specific to adjustment procedures:
• Maintain an ambient temperature of 23 °C ± 1°C. The NI 4112 temperature will be
greater than the ambient temperature.
Calibration Overview
Calibration includes the steps shown in the following figure.
4 | ni.com | NI PXIe-4112 Calibration Procedure
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