DH Instruments PPC4, Operation And Maintenance Manual

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PPC4™ OPERATION AND MAINTENANCE MANUAL
© 2009 DH Instruments, a Fluke Company Page 46
3.2.26 Preferences

PURPOSE
To access a menu of PPC4 operational preferences and functions.
3.2.26.1 Screen Saver

PURPOSE
To adjust the PPC4’s Screen Saver settings.

PRINCIPLE
PPC4 has a Screen Saver function which causes the display to go into a screen
saving mode after receiving no front panel input for a certain amount of time. The
screen saving mode and default time depends on the PPC4 local interface
configuration: Basic or Advanced. The default screen saver time activates the
screen saver after 10 minutes for Basic Interface and 1 hour for Advanced
Interface. The screen saver activation time can be adjusted by the user or screen
saving can be completely eliminated.
Note
Setting screen saver time to zero (Basic Interface) or off
(Advanced Interface) eliminates the Screen Saver function so
that the display permanently remains on and at full brightness.

OPERATION
For Basic Interface see Section 4.5.5.1.
For Advanced Interface see Section 5.7.7.1.
3.2.26.2 Sounds

PURPOSE
To adjust or suppress the PPC4 key press sounds.

PRINCIPLE
PPC4 is equipped to provide audible feedback and alarms. The sounds are used
for the following indications:
Valid key press Brief beep. Choice between three frequencies or
NO sound is available (see Sections 4.5.5.2,
5.7.7.2).
Invalid key press Descending two tone “blurp”.
Leak check completed Three two second beeps (see Section 3.2.18).
Upper or lower limit exceeded Intermittent one second beeps (see Section 3.2.21)
External device not connected Eight second high frequency beep
(see Section 2.3.6)
Pmax! (overpressure limit) exceeded Eight second high frequency beep
(see Section 3.2.21.1).

OPERATION
For Basic Interface see Section 4.5.5.2.
For Advanced Interface see Section 5.7.7.2.