3. OPERATION
Page 41 © 2002-2007 DH Instruments, a Fluke Company
The QDUT AutoTest can now be run. The display is:
1. Indication of minimum and maximum
pressure included in the sequence which is
about to run.
ENTER to run psi g
0.000 to 300.000
This screen is offered for the user to check, prior to execution, that the correct
sequence is defined and that it does not exceed the range of the device or
system being tested.
Pressing [ESC] twice returns to the MAIN RUN screen without sequence
execution (this feature can be used to AutoRange the PPC3 based on DUT
characteristics without running a specific test sequence. Pressing [ENT] causes
sequence execution to proceed.
The display is:
0.000 psi g IH
Prep & ENTER 0/11
Perform any operations that are needed before running the test such as making
connections or exercising the DUT. The PPC3 direct pressure control keys are
active to allow pressure adjustment (see Section 3.1.3). When ready to begin the
test, press [ENT].
Dynamic pressure control begins to set the first target value of the sequence
(or vent executes if the first increment is zero gauge pressure). The display is:
1. Indication of sequence increment that is
currently being executed / total increments in
sequence. Changes to ENTER once Ready
condition has been achieved at target value.
48.335 psi g IH
T60.000 D 2/11
Except for the bottom right hand corner, the sequence run display is identical to
the normal MAIN RUN screen (see Section 3.1.1). The bottom right corner
provides information on sequence execution. This information updates as each
sequence increment is executed.
Once a Ready condition has been achieved (see Section 3.2.2), use the direct
manual pressure control keys ([
] and [ ]) to adjust the pressure set by
PPC3 until the DUT reads the cardinal value of the pressure increment.
Once the DUT indicates the cardinal value of the pressure increment, press
[ENT]. The display is:
1. Final target pressure at which DUT indicated
cardinal value of the pressure point.
2. <IN> or <OUT> depending on whether DUT
was in or out of tolerance. DUT is <IN> if
cardinal point – PPC3 pressure < DUT
tolerance * DUT span.
60.010 psi g IH
T60.012 IN 2/11
Press [ENTER] to accept this test point and proceed to the next test point or [←]
to repeat the point.
Repeat the set pressure, take reading and accept data procedure until all points
in the sequence have been accepted.
All Quick Sequences end with a VENT command after the last point. To avoid
the VENT, press [ESC] after the last point.
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