Agilent Technologies PHD-4 User Manual page 59

The acoustic signal on the rear door “Headset” is never disabled.
NOTE
The HID features two different acoustic signals to highlight different operating
NOTE
conditions:
Backlight on
Disabling the “Backlight on” command, it is possible to switch off
backlighting of the display.
Re-enable the “Backlight on” item of the “Set-up” menu in order to
switch on display backlighting again permanently.
Backlighting of the display can be switched on for a few seconds
pressing soft-key 2 in the measurement screen page, identified by the
symbol (
Large screen On
The Large Screen ON command enable the automatic switching to
Large Measurement screen mode.
If “Large screen on” is not selected Complete Measurement screen
will operate.
Switch Off!
At the end of the work session, the “Switch Off!” command can be
used to power off the device. To prevent accidental switch-off, the
HID requests confirmation before switching off the PHD-4.
A fast link to the same switch-off function is present during the
measurement phase on the 3rd key of the front panel.
PHD-4 Portable Helium Detector User Manual
High tone for user messages
Medium tone for leak rate
).
/ 87-900-120-01 (F )
Technical Information
User Interface
107/140
5