Operation; Front Panel; Display - Prevac MG14 Operating Manual

MG14 operating manual Rev 1.4

4 Operation

4.1 Front Panel

Fig. 4-1 shows the front panel of the MG14 .
A Channel no1 row
B Channel no2 row
C LED's operation status
D Keyboard

4.1.1 Display

4.1.1.1 LED's operation status
The most important system states are always identify by LEDs - no matter which menu is selected.
The upper green LED's part on the front panel displays actual setpoint status – refer to chapter
4.2.1.1. Degas and emission of Ion gauge are shown by 'Degas' and 'Emission' LED's. Any failure
of operation is always signal by blinking red 'Failure' LED and additionally corresponding message
to the failure is display on the LCD screen.
4.1.1.3 Measurement Display
The both channels measurement can be displayed digitally (item C) and as a bar graph for each
channel separately.
Digital display: The measurement is displayed as a three-digit floating point number in scientific
notation.
The unit of measurement is displayed to the right: mbar, Torr, Pa, or Micron.
Bar graph: The bar graph illustrates the increase or decrease of the measurements. The related
pressure range limits can be seen at the left (lower limit) and right (upper limit) of the bar graph.
The unit of measurement is always identical with the digital measurement display. How to change
between each status see chapter 4.2.2.1.
Fig. 4-1 Front panel of the MG14 (example)
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