Inficon 550-300A, Operating Manual

Page: 45 / 128

Operation
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Menu
Pressing the MENU button displays the selection menu.
Display-buttons
The functions of the eight buttons on the left or on the right of the display depend on
the selected menu. Please find the description of relating functions on the display.
Numerical Entries
If you have opened a menu screen for numerical entries please proceed as follows:
• If you do not want to change any digits, press key „Cancel“ to abort.
• The digit that can be changed is displayed shaded. Use the keys No. 8 and No. 4
and go to the position to be changed.
• To change a digit to a specific number press the corresponding pair of numbers.
A sub-menu opens and the desired number can be selected.
The sub-menu closes automatically and the next whole number will be displayed
with inverted colours and can be changed.
Having reached the last digit all corrections have to be confirmed by OK.
Fig. 6-3 Zero function (background suppression)
Item Description Item Description
1 Leak rate signal without ZERO 5 Leak 5E-10 mbarl/s with ZERO
2 ZERO is enabled 6 Floating Zero adjustment
3 Suppression of two decades 7 No Zero-adjustment
4 Leak 5E-10 mbarl/s without ZERO