Chapter 2
SQM-242 CoDep
2-2
Outputs configured for quartz sensor inputs, like the first three in the sample screen,
display rate and thickness information. The first display is the Thickness Measurement
for the material (in kA). Immediately below the Thickness Measurement display is the
Thickness Setpoint setting. You can edit the Thickness Setpoint at any time. When the
Thickness Reading reaches the Thickness Setpoint deposition will stop.
Note:
To adjust a Setpoint, click on the setting and type a new setting. Press <Enter>
to send the setting without moving to another field. To move to another field, use the
<Tab> key or your mouse. Each time you move to another field, the setting is updated.
Below the thickness displays are the Rate Reading and Rate Setpoint displays (in
A/sec). In Auto mode, the SQM-242 control loop continuously adjusts the output power
to maintain the deposition Rate Reading at the desired Rate Setpoint.
Below the rate displays are the output Power Reading and manual Power Setpoint. The
Power Reading displays the current output power (in % Full Scale). In Manual mode,
the Power Setpoint can be edited to manually adjust output power.
The option buttons control the function of each output. As mentioned previously, Auto
mode uses a PID control loop to control rate. Manual mode, allows you to manually
adjust the output power. That can be useful for material preconditioning or error
conditions.
The Record button configures the output as an analog recorder. A recorder output
provides a signal that is proportional to thickness, rate, power, or analog voltage.
Finally, the Off button sets the output to 0 volts and hides the displays.
Start/Stop
When Start is displayed, starts SQM-242 readings and PID output
control. When Stop is displayed, stops readings and sets the
power outputs to zero. When Stop is displayed, a Hold button is
also visible.
Hold/Resume
Clicking Hold sets all output power levels to zero, and changes
the button legend to Resume. Clicking Resume continues
deposition without zeroing thickness.
Zero All
Sets all material (i.e. output) thickness readings to zero.
Zero
Sets the selected material thickness reading to zero.
Edit
Displays a dialog box with additional settings for an output.
