DH Instruments PPCH-G, Руководство по эксплуатации и обслуживанию

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3. OPERATION
Page 33 © 2007 DH Instruments, a Fluke Company
Table 6.
Summary of PPCH-G function key operation
DIRECT FUNCTION KEYS ARE ACTIVE FROM THE MAIN RUN SCREEN
See corresponding manual Sections 3.3.1 through 3.3.10 for full detail.
Adjust DUT fluid head height. Set
to zero for no fluid head correction.
View active range and toggle
through available ranges.
[ENT]
on
a range activates it.
Cycle automatically between vent
and a pressure.
Select pressure unit of measure for
the active range. Choice of units
available in this menu can be
customized.
Run an automated leak check at
the current pressure.
Select the pressure measurement
mode for the active range (absolute,
gauge).
Set up and optimize all aspects of
PPCH-G measurement, control and
displays for a specific operating
range and measurement mode.
Menu of less commonly used internal
functions and settings.
Search for and initialize internal
and external Q-RPTs available to
the PPCH-G system.
Menu of commonly used setup
features including save/delete
AutoRange ranges, set display
resolution, adjust jog step size, set
upper/lower limit, view AutoTest
data, select pressure control mode
and adjust control limits, set status
of external 12V drivers
Set up and run automated test
sequences.
Input a pressure control set point
command from the run screen.
ENTER values when editing.
3.3 DIRECT FUNCTION KEYS
3.3.1 [RANGE]

PURPOSE
To view and/or change the active pressure measurement range and associated settings.
[RANGE] selects from existing ranges. [AutoRange] creates new ranges (see Section 3.3.4).

PRINCIPLE
A PPCH-G range is defined as a pressure span and associated settings (see Section 3.2.6).
A PPCH-G may have multiple ranges. Each Q-RPT (and the utility sensor if present)
available to the PPCH-G system has a default range which is its maximum full scale.
Additional ranges, lower than the Q-RPT’s full scale, may also be created using AutoRange
(see Section 3.3.4). Ranges created using AutoRange may be saved with all their settings
for reactivation (see Section 3.4.1).
The
[RANGE]
function key allows the active PPCH-G range and available ranges to be
viewed and selected.