50 Operation of the UL1000 and UL1000 Fab
iina70e 05.fm technical handbook(1408)
5.4.2 Speaker Volume
On the left hand side two loud speaker symbols are shown, combined with the signs
+ and -. By pressing the corresponding softkeys (Soft Keys no. 2 and no. 3) the
volume can be adjusted for convenient loudness. In the bottom line of the display
another loud speaker symbol is shown, combined with a number. This number
indicates the level of the current loudness (ranges from 0 to 15).
Refer to Chapter 6.4.3 Volume for information on loudness, alarms, and sound
tracks.
5.4.3 Status Line in the Display
The status line at the bottom of the display informs about (reading from left to right):
The hearing can be harmed by the audio alarm.
The accoustic output can exceed a level of 85dB(A).
Do only expose to the audio alarm for a short time or use ear protection.
Symbol of display Meaning Explanation
• Volume level
Please refer to Chapter 5.4.2
Speaker Volume.
S1 • Trigger 1
If the trigger values are exceeded
these signs are inverted. (White on
black background.)
S2 • Trigger 2
see: Trigger 1
•• • Detected mass
Number of dots indicates the mass
number (4 dots = Helium,
2 dots = Hydrogen)
• Warning triangle
Please refer to Chapter 8.1
VAC • Working mode
VAC or SNIFF indicate which
working mode was selected (Please
refer to Chapter 6.3 Mode).
ULTRA • Vacuum area
Depending on the inlet pressure the
UL1000 and UL1000 Fab may be in
GROSS, FINE or ULTRA, which is
indicated here (Chapter 4.3 Working
Modes)
ZERO • ZERO
Indicates if ZERO-function is active.
COR • corrected leak rate
Indicates if the leak rate is displayed
as air equivalent.
Auto Leak Test • Auto Leak Test
Indicates if this mode is active
I•ZERO • I•ZERO
Indicates if I•ZERO function is active.
STABLE • Signal stable
Indicates if background signal is
stable (see Chapter 6.6.2.2)
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