INFICON Cygnus 2 Thin Film Deposition Controller - Manual (Page 81)

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Cygnus 2 Operating Manual
3.5.4 Rate Watcher
The Cygnus 2 includes a sample and hold function which enables periodic
sampling of the deposition rate by opening and closing the Sensor shutter. If you
are controlling inherently stable deposition sources, this function is useful in
maximizing crystal life. When RateWatcher is enabled, during deposit, rate control
will be established. The Sensor shutter will close for a designated amount of time.
The shutter will once again be opened to validate and adjust the power level. This
procedure is repeated throughout the deposition. Three Material/Deposit
parameters—RateWatcher Option, RateWatcher Time and RateWatcher
Accuracy—control this function. See
section 5.1.7, Deposit Page Parameters, on
page 5-14 .
3.5.5 Handheld Controller
A Handheld Controller, see Figure 3-17 , is available as an accessory with the
Cygnus 2. The Handheld Controller serves as a wired remote to manually control
power, switch crystals and produce a STOP.
The Handheld Controller is attached to the Cygnus 2 with a modular plug to the
front panel.
Power is affected only when in Manual mode by moving the POWER/STOP switch
laterally. Pressing to the left as idicated by the INCR arrow, increases the power.
Pressing to the right as indicated by the DECR arrow, decreases the power.
A STOP is produced by moving the POWER/STOP switch down.
When on the Sensor Information screen, a crystal switch is activated by pressing
the red button on the body of the controller.
The Handheld Controller kit includes a convenience hook for the Handheld
Controller that can be attached to the Cygnus 2’s mounting ears or some other
accessible location.
Figure 3-17 Handheld controller