INFICON SQM-242 Thin Film Deposition Controller Card Operating Manual - Manual (Page 38)

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SQM-242 Operating Manual
Gain . . . . . . . . . . . . . . . . . . . . . . . . . The gain term for transforming voltage to
measured units. This is the m term in
y = mx + b.
Offset. . . . . . . . . . . . . . . . . . . . . . . . The offset term for transforming voltage to
measured units. This is the b term in
y = mx + b.
Units . . . . . . . . . . . . . . . . . . . . . . . . The units that you wish to display for the
analog input.
Monitor . . . . . . . . . . . . . . . . . . . . . . An analog input can also act as a monitor to
stop deposition. For example, an analog
signal from an optical monitor could stop
deposition when a certain voltage is reached.
A voltage input from a pressure transducer
might also prevent deposition until a certain
vacuum is reached.
Setpoint. . . . . . . . . . . . . . . . . . . . . . The voltage measured by a monitor input that
will halt deposition. Analog setpoints are
entered in Volts, not calculated units!
3.6.3 View Menu: Card Setup
This dialog controls the most basic functions of the SQM-242 card. It also provides
useful installation and troubleshooting information.
Simulate . . . . . . . . . . . . . . . . . . . . . Normally the SQM-242 card uses the quartz
crystals as inputs for controlling the source
outputs. The SAM-242 card uses analog
input voltages for control. Simulate mode
simulates these inputs. No SQM-242 or
SAM-242 card needs to be installed for the
simulate mode.
Card 1, Card 2, Analog. . . . . . . . . . Shows the firmware revision of each installed
card. A value of 0.00 indicates that the card
is not seen by the software, and is probably
not installed properly in Windows. See
Chapter 7, Troubleshooting and
Maintenance
.