DH Instruments PPC4, Руководство по эксплуатации и обслуживанию

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5. ADVANCED USER INTERFACE
Page 95 © 2009 DH Instruments, a Fluke Company
automatically depending on the current active PPC4 range. The value can be adjusted by
navigating to
[Settings], <Control>, Jog Step (see Section 5.7.8.3).
5.5.3 Vent

PURPOSE

activates a sequence to bring the test pressure to atmosphere (see Section 3.2.14).

OPERATION

causes PPC4 to control pressure to near atmospheric pressure and then open the system
vent valve (see Figure 31 andFigure 32). On-going execution of the vent function is indicated
by lighting a RED LED to the left of the

key. Completion of the vent process is indicated
by the Ready/Not Ready indicator light becoming GREEN with the vent RED LED still lighted.
The vent valve remains open until

is pressed again, another direct pressure control key is
pressed, or an automated pressure control command is given.
5.6 Advanced Interface Menus
5.6.1 Shortcuts
All PPC4 Advanced Interface functions are available through the Main Run Screen buttons
(
[Tools] , [Settings] and [AutoRange] ) and the direct pressure control keys such as

and

. Shortcuts give quick access to the most common functions. The shortcut fields are
identified in Figure 11 and Table 17. Enter a shortcut to navigate directly to the menu
associated with that function.
For example, clicking on the Unit of Measure (see item 11 in Figure 11 and Table 15) is the
same as navigating the menu sequence: [Settings], <Pressure>, Pressure Unit. Table 17
lists each shortcut and the associated menu for each.
5.6.2 Menu Structure
Table xx shows the top level menu structure for the Advanced Interface. Most day to day
operations are accessible through the shortcuts (see Section 5.6.1). All functions are
available through menus that are grouped by functionality.
Note
[Settings] contains numeric entries that determine how the PPC4 will
operate, what calculations will be made and environment and setup
commands. Typically Settings functions are entered only to set up the
PPC4 prior to performing some action or starting a series of tests.
[Tools] is for action-oriented functions. [Tools] functions include AutoTest,
Leak Test and other sequences that involve pressure control and
measurement. Items in the Tools menu involve some kind of action.
[AutoRange] creates, edits and deletes AutoRanges, optimizing
measurement and control of the PPC4 over specified ranges. (See
Section 3.2.8)