NI VirtualBench Calibration Procedure
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© National Instruments
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27
DMM Re-Verification
Repeat the
section to determine the As-Left status of the instrument.
Note
If any test fails re-verification after performing an adjustment, verify that you
have met the conditions listed in the
section before returning
your device to NI. Refer to
for assistance in returning the
device to NI.
Oscilloscope Calibration Procedure
This section contains the verification and adjustment procedures for the oscilloscope on the
VirtualBench. The calibration process includes the following steps:
1.
—Set up the test equipment.
2.
—Verify the existing operation of the instrument. This step
confirms whether the instrument is operating within its specified range prior to adjustment.
3.
—Perform an external adjustment of the instrument that adjusts
the calibration constants with respect to standards of known values.
4.
—Repeat the verification procedure to ensure that the
instrument is operating within its specifications after adjustment.
These steps are described in more detail in the following sections.
Oscilloscope Test Equipment
Table 12 lists the equipment recommended for the oscilloscope performance verification and
adjustment procedures. If the recommended equipment is not available, select a substitute using
the requirements listed in the table.
Table 12.
Recommended Equipment
Equipment
Recommended
Model
Minimum Requirements
50 Ω terminator
Amphenol
000-46650-51RFX
VB-8012 only.
Oscilloscope
calibrator
Fluke 9500B
calibrator
Vertical gain: DC ±(0.025% + 25 μV) into
1 MΩ
Oscilloscope
calibrator active
head
Fluke 9530
DC operation
