3. OPERATION
Page 35 © 2002-2007 DH Instruments, a Fluke Company
through the increments of a calibration sequence and logs
calibration data. The first portion of the QDUT function can
be used alone to automatically set PPC3 range and
operating characteristics appropriately for the device under
test. The sequence function assumes that the pressure at
each target point will be adjusted so that the device under
test reads a cardinal target pressure point. This is
particularly useful when calibrating analog gauges.
Test sequences are defined by the minimum pressure, maximum pressure and test
increment in % of full scale. For tests, in gauge mode, the minimum pressure is always zero.
For test in absolute or negative gauge mode, the minimum pressure may be other than zero
and is defined by the user.
OPERATION
To run an AutoTest press [AutoTest] from the MAIN RUN screen.
The display is:
Run an AutoTest: IH
1Quick 2QDUT
Select the test type desired. See Section 3.3.6.1 for Quick Test or Section 3.3.6.2 for QDUT Test.
3.3.6.1 QUICK AUTOTEST
OPERATION
To run a Quick Test, press [AutoTest] and select <1Quick>.
The display is:
Run current I
uickTest 1yes 2no
This selection provides the choice between running the last Quick Test or setting
up a new Quick Test definition. Select <1yes> to rerun the last Quick Test.
Select <2no> to define a new Quick Test.
When <2no> is selected from the Run current QuickTest menu, the set-up/edit
routine is accessed. The first display is:
1. Entry field for maximum pressure of the Quick
Test sequence. Recalls value last entered.
Quick Test FS: IH
700 kPa g
This entry determines the maximum pressure of the Quick Test sequence. Enter
the maximum pressure and press [ENT].
Sequence FS must be less than the pressure upper limit of the active
pressure range or an error will occur when the test begins to run. To set up and
run a sequence including a pressure greater than the current upper limit,
increase the upper limit before running the sequence (see Section 3.4.4) or
change to a higher range if available (see Section 3.3.1). To AutoRange the
PPC3 automatically for a specific sequence based on the characteristics of a
DUT, use a QDUT Test (see Section 3.3.6.2).
To set up a test for which all the pressure are negative gauge (gauge
pressures less than atmospheric pressure), enter zero (0) as the <Quick
Test FS> and the lowest negative gauge pressure as <Quick Test low P>.
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