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NI PXI-4130 Calibration Procedure
Test Equipment
Table 2 lists the equipment required to calibrate the NI 4130. If you do not have the
recommended equipment, select a substitute calibration standard using the specifications listed
in Table 2.
Test Conditions
Follow these guidelines to optimize the connections and the environment during calibration:
•
Keep connections to the device as short as possible. Long cables and wires act as antennas,
picking up extra noise that can affect measurements.
•
Verify that all connections to the device, including front panel connections, are secure.
•
Ensure that the PXI chassis fan speed is set to HI, that the fan filters are clean, and that the
empty slots contain filler panels. For more information, refer to the
Maintain Forced-Air
Cooling Note to Users
document available at
ni.com/manuals
.
•
Keep relative humidity between 10% and 90%, noncondensing.
•
Ensure that the ambient temperature is 23 ±5 °C.
Table 2.
Equipment Specifications for NI 4130 Calibration
Equipment
Recommended Equipment
Specifications
Digital multimeter
(DMM)
NI PXI-4071
Voltage: > ±50 ppm accuracy,
> 30
μ
V resolution
Current: > ±0.04% accuracy,
> 1
μ
A resolution
Variable power supply
Xantrex HPD 30-10
Variable between 11 V and
15.5 V, 5 A
External load
Clarostat 240C
Power resistor decade box
with a range of 2
Ω
to
48,000
Ω
and an accuracy
of ±10%
Resistors
—
Two 50
Ω
, 0.25
Ω
±10%
resistors, and one 1 k
Ω
,
0.25
Ω
±10% resistor
External calibrator
Fluke 5700A/5720A/5730A
—
Auxiliary power
supply
NI APS-4100
11 V to 15.5 V, 5 A
Twisted pair, shielded
cabling wire
Belden 83319E 009100
18 AWG to 22 AWG