PPC2 AF OPERATION AND MAINTENANCE MANUAL
© 1998 DH Instruments, Inc. Page 42
OPERATION
To access the Resltn function, press the SETUP
menu key and then 2Resltn. The display is:
Pressure resolution:
0.0010% FS
Enter the desired pressure display resolution in % FS of the currently active range. The display
returns to the main run screen with the entered resolution setting active.
The system default pressure display resolution is 0.0010% FS.
The resolution setting is range specific. A resolution setting made in one range does not
affect other ranges.
3.3.3 SEQUENCE
PURPOSE
To create, store and edit the sequence files used by the SEQ function (see Sections 3.2.5 and
3.2.5.3).
PRINCIPLE
The PPC2 AF FILE SEQUENCE function allows a sequence of automated pressure control
targets in a specific range with predetermined control and operating parameters to be executed
by recalling and running a sequence file. The files containing the information necessary to run
a file sequence are created, stored and edited in 3Sequence of the SETUP menu.
Setting up a sequence file requires specifying:
• The reference transducer to be used (Hi, Lo).
• The range on the reference transducer (1, 2 or 3).
• The number of pressure targets in the sequence.
• The numerical value of each target pressure.
• The pressure units of measure and measurement mode (gauge or absolute).
• Whether a VENT function should be included at the end of the sequence.
• Whether sequence execution should continue from one pressure target to the next on operator
pressing ENTER or automatically on a timer and, if on a timer, the timer duration.
• Pressure control mode to be used (static or dynamic).
• Whether to use custom control parameter settings and the value of those settings if
custom control is selected.
• The file number under which the sequence definition should be stored.
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