LCD text display Meaning
————————————————————————
The correct password must be
entered in service menu item
50 first.
Password failed The wrong password has
been entered. The default
password 1 is „0013“.
Password ok The password has been ente-
red correctly. The extended
menu (password 1) is now
accessible or changes can
now be made in the service
menu.
PE=x.xE-x PV=x.xE-x Display of inlet and forevacu-
um pressure in the previously
selected unit (menu item 12).
PE=xx.xxV PV=xx.xxV Display of sensor bridge volta-
ge for inlet and forevacuum
pressure.
In the vented state (V3 and
V2b open) a voltage of 8.67 V
must be displayed. In the case
of greater deviations
(± 100 mV) an alignment
should be run (see explanati-
ons for service menu item 92).
Performing Adjust Running of service menu item
92. Function can be termina-
ted by operating the „CLEAR“
push-button (4/10).
Performing Autotune During the calibration pro-
cess, the anode voltage of the
detection system is changed
so that the correct mass posi-
tion is used. Function can be
terminated by operating the
„CLEAR“ push-button (4/10).
Performing Burn In Continuous test in the se-
quence START, STOP, VENT
(service menu item 91) is run-
ning.
Function can be terminated
by operating the „CLEAR“
push-button (4/10).
Performing CAL intern A calibration is being run with
the internal calibrated leak.
Function can be terminated
by operating the „CLEAR“
push-button (4/10).
Performing Mass Scan A mass spectrum is output to
the RECORDER output.
Duration 70 s approx.
Function can be terminated
by operating the „CLEAR“
push-button (4/10).
Performing Offset Determination of the helium
background after the gas bal-
last valve has been closed.
LCD text display Meaning
————————————————————————
Performing Standby After having switched on the
automatic functions (serv. me-
nu item 70), the UL 200 per-
forms a warm boot and then
enters the Standby mode.
Performing Status
RS 232 A status log is output to the
SERIAL connection.
Performing Test Function of menu item 4 is
active.
Running Up TMP:xxxxHz The speed of the turbomole-
cular pump is indicated during
run-up.
Signal Stable ? <enter> The leak rate signal which is
indicated on the bargraph dis-
play (5/4) must be stable.
Then the calibration may be
continued by pressing the
ENTER push-button (4/8).
Sniff x.xE-xx mbar·l/s The instrument is running in
the sniffer mode (menu item
2) and the measured leak rate
is displayed.
Standby The Standby mode has been
attained.
Switch off Automatic This service menu item can
only be changed after having
switched off the automatic
function (service menu item
70).
Switch off Pump Both forevacuum pump and
turbomolecular pump must be
switched off when aligning the
Thermovac gauge. See des-
cription for service menu item
92.
Test failed Result of the mass test func-
tion of menu item 4.No helium
signal is measured. The heli-
um signal is lost in the signals
from mass 2 or mass 3.
Test ok Result of the mass test func-
tion of menu item 4.The mea-
surement signal is generated
by helium (mass 4).
UL 200 Version .... Display of instrument desi-
gnation and software version
number when switching the
instrument on.
Updating Parameter A parameter which remains
permanently stored in the
case of mains failures has
been changed and stored.
Vent Vent mode, test connection
(3/2) is vented. An optionally
connected venting valve (OP-
TION) is activated.
36
TH 10.211/8.02 - 12/97
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