Clicks; Serial Port Timeout Value; Analog Input Filtering - Advanced Energy MDX II User Manual

You can change the program source and even set a different source for each of the three
operating modes (host, local, analog). Thus it is possible to:
• Set the program source to internal from the control panel or through the serial port
interface, which gives control of the regulation mode, setpoints, and ramp/run sequences
to the control panel or serial port) and
• Turn on the output from the User port.
Or you can:
• Set the program source to external from the control panel or through the serial port
interface, which gives control of the regulation mode, setpoint, and ramp time to the User
port) and
• Turn on the output from the control panel or serial port.
Note: You cannot specify program source from the User port.

Clicks

The clicks function specifies the "encoder rate" (number of counts per click) for the MODIFY
knob, which increases or decreases the rate of change when you turn the knob. You can
program this function only from the control panel (see page 6-14).
The default is 10, but you can enter any number from 1 to 20. If you want the displayed value
(setpoint, for example) to change slowly as you turn the knob, set the number of counts per
click to 1. If you want the value to change quickly, set the number of counts to 20.

Serial Port Timeout Value

The timeout value is a specified amount of time that the MDXII unit will wait between bytes
before it resets. You can select a timeout value of from 0.02 s to 5 s from either the control
panel or through the serial port interface.

Analog Input Filtering

Since a certain amount of fluctuation is inherent in plasma systems, some noise in your analog
readings is inevitable. However, with the analog input filtering function you can specify a
predefined corner frequency. You can program this function through either the control panel
or through the serial port interface.
You can specify a factor by which the analog signals LEVELIN.A, RAMPIN.A, voltage, and
current readings from the internal supply are filtered; this is a low pass filter with variable cor-
ner frequencies. The trade-off is that the higher the level of filtering, the longer it takes for the
MDXII unit to settle on a reading.
5700262-R Operation Overview
MDXII Power Supplies
5-17