Agilent Technologies Eyesys Mini-B/A, Instruction Manual

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Eyesys Mini-B/A Gauge Controller
8
System Reset
A system reset can be accomplished by holding pressed the Emission ON/OFF button while
powering up the system. System reset resets the Gas Correction value to 1.0 and sets the
gauge to Local Control (see Serial Communication Option).
Emission High/Low Switch
Emission current is selectable at any time by use of this switch. For better gauge
performance, it is recommended that Low Emission be used if the Mini-BA is used to
measure higher pressures for extended periods.
The switch setting is overridden during Degas, at which time the Emission current is always
High. At the conclusion of the Degas cycle, emission returns to the switch setting level.
Low Emission Current: 0.1 mA
High Emission Current: 1.0 mA
Degas ON/OFF Button
At operating pressures below 1.3E-2 Pa/1.3 E-5 mbar/1E-05 Torr, Degas may be activated to
degas electrodes. Above this pressure, the system will not respond to the Degas button.
To activate Degas, press the Degas button until the pressure LED flashes. Degas lasts for
fifteen minutes - expect a slight rise in pressure during initial stages of degassing. Once
Degas is activated, the system can be used to measure any pressure in the normal operating
range. The display will indicate pressure as usual, but with a flashing LED to indicate Degas
cycle.
After fifteen minutes, Degas automatically terminates, the LED stops flashing, and normal
pressure readings continue.
If Degas is to be terminated before the automatic termination, press the Degas button.
Stopping emission, either by the Emission ON/OFF button or remotely, terminates Degas.
Any error that stops emission – Errors 5, 6, 8 and 9, terminates Degas.