DH Instruments PPCH-G, Руководство по эксплуатации и обслуживанию

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PPCH-G™ OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 42
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 PPCH-G automatically for a specific sequence based
on the characteristics of a DUT, use a QDUT Test (see Section 3.3.6.2).
If the active measurement mode is absolute (see Section 3.3.3), the lowest
pressure must also be defined. The next display is:
1. Entry field for minimum pressure of the Quick
Test sequence. Recalls last value entered.
Quick Test low P IH
10 MPa a
This entry determines the lowest pressure of the Quick Test sequence for tests in
absolute measurement mode. Note that PPCH-G vents in response to a command
for zero absolute pressure and cannot set pressure under atmospheric pressure
(see Section 3.3.10.6). Enter the test lowest pressure point and press
[ENT]
.
The display is:
1. Entry field for sequence pressure increment in
% of full scale. Recalls last value entered.
Test increment
20.0%FS
This selection determines the size of the pressure increment in terms of % of the
span of the test. The pressure sequence will run in pressure steps of (span x
increment %) ending with the uneven increment if applicable.
Enter the desired pressure increment and press
[ENT]
.
The display is:
Test point sequence
1up 2down 3u&d 4d&u
This selection determines the order in which the test sequence increments will
execute. Selecting
<1up>
causes the sequence to execute starting at the low
point and going to the full scale value.
Selecting
<2down>
causes the sequence to run starting at the full scale value
and going to the low point.
Selecting
<3u&d>
causes the sequence to run from low point to full scale and
back to low point.
Selecting
<4d&u>
causes the sequence to run from full scale to low point and
back to full scale.
After making the increment order selection
the display is:
Next point on:
1ENTER 2Timer
This selection determines how the sequence will proceed from point to point
when the test is run.
If
<1ENTER>
is selected, the sequence proceeds to the next target value
whenever, and only whenever,
[ENT]
is pressed.