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National Instruments Corporation
5
NI PXI-4070 Calibration Procedure
Equipment and Other Test Requirements
This section describes the equipment, test conditions, documentation,
software, and connections required for calibration.
Required Test Equipment
The following equipment is required for calibrating the NI 4070:
•
Fluke 5700A multifunction calibrator calibrated within the last
90 days or a Fluke 5720A multifunction calibrator calibrated within
the last year
•
Pomona 5145 insulated double banana plug shorting bar (or another
means of creating a short with low thermal EMF (
≤
150 nV) across the
HI and LO input banana connectors on the NI 4070)
•
Two Pomona B-4 banana-to-banana patch cords (cables) or similar
banana-to-banana cables with length not to exceed 4 in.
•
Wire (
≤
22 AWG,
≤4
in.
)
for connecting the AUX CURRENT and
SENSE HI binding posts of the calibrator (alternatively, you can use
one of the Pomona B-4 cables instead of this wire)
•
National Instruments PXI chassis and controller
•
National Instruments calibration cable assembly for the NI 4070
(part number 161283A-01)
Optional Test Equipment
The following equipment is optional for calibrating the NI 4070 and is only
used for frequency verification:
•
NI PXI-6608
•
National Instruments SH68-68-D1 shielded cable
•
National Instruments TB-2715 terminal block
•
Pomona MDP 4892 double banana plug with strain relief
•
Coaxial cable (for example, RG178)
Test Conditions
Follow these guidelines to optimize the connections and the environment
during calibration:
•
Ensure that the PXI chassis fan speed is set to HI and that the fan filters
are clean.
•
Power on and warm up both the calibrator and the NI 4070 for at least
30 minutes before beginning this calibration procedure.
•
Maintain an ambient temperature of 23 ±1 °C.
