Parameters
GA 09.035/6.02 - 07/2011 - © Oerlikon Leybold Vacuum
43
The offset correction is activated
The OFS indicator is illuminated
Note:
Always deactivate the offset correction before adjusting the offset of a
transmitter.
Adjusting the zero point of a digital CTR
1
Select the
oFS
parameter
2
Keep the DOWN button pressed for approximately 2 seconds
The zero point of the transmitter is adjusted
The OFS indicator is illuminated after >2 s and as long as the button
is being pressed
Note:
First adjust the transmitter, then the Multi-Channel Controller.
Note:
After adjusting the zero point, a zero value is displayed. Due to the mea-
suring resolution of the CTR 100 and CTR 101 (noise, drift), a zero with
plus/minus several digits are displayed.
5.2.5
Degas function (
dEGAS
)
Ionization transmitters with a hot cathode are sensitive with regard to deposi-
tions on the electrodes. These depositions can cause signal fluctuations.
The
dEGAS
function is to bakeout and thereby clean the electrode system of
the transmitter. See Reference [6].
ITR 200 transmitter:
The
dEGAS
function only affects the currently active filament. See
Activating the degas function
1
Select the
dEGAS
parameter
2
Press the UP button
The degas function is activated
The display shows
on
The DEG indicator is illuminated
The cleaning process takes approximately 3 minutes. Then the degas function
switches off automatically. You may also deactivate this function manually.
Deactivating the degas function
1
Select the
dEGAS
parameter
2
Press the DOWN button
The degas function is deactivated
The display shows
oFF
The DEG indicator is dark