2 operation – INFICON SQM-242 Thin Film Deposition Controller Card Operating Manual User Manual

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SQM-242 Operating Manual

5.2 Operation

Send All. . . . . . . . . . . . . . . . . . . . . . Sends all of the stored parameters to the

SQM-242 card(s) in preparation for a Read
command. Normally you will click Send All to
initialize the card, then make individual
Sensor and Output setting changes as
needed. Current settings are stored in an INI
file in the application directory on exit from
the program.

Show Sensors / Show Outputs . . . Toggles the card reading area between

displaying individual sensor readings, and
the average of all sensors assigned to an
output.

Read/Stop . . . . . . . . . . . . . . . . . . . . Starts and stops the SQM-242 card(s) from

measuring and controlling deposition. When
the card is stopped, all outputs are set to
zero.

Mode . . . . . . . . . . . . . . . . . . . . . . . . Alternates between reading sensors and

simulating sensor readings. Simulate mode
is useful for training purposes, since no
sensors (or even an SQM-242 card!) need to
be installed.

In Simulate mode, sensors will not indicate a
rate reading until the output power reaches at
least 50%. Also, we introduce some noise
into the readings in Simulate to better mimic
an actual deposition process.

Init . . . . . . . . . . . . . . . . . . . . . . . . . . Enter card initialization values, then press

the Init button to send the values to the
SQM-242 card(s). This must be done before
sending any other settings. The values will
be saved on exit from the program.

Zero . . . . . . . . . . . . . . . . . . . . . . . . . Sets the thickness reading of the selected

sensor to zero. You can select a specific
sensor to zero all sensors on a card, or all
sensors on all cards using the Card/Sensor
dropdown boxes. First select the sensor to
be zeroed, then click Zero.

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