INFICON Guardian EIES Controller - Manual (Page 71)

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Guardian Co-Deposition Controller Operating Manual
3.6.3 X Chan (Cross Channel) Tab
Parameters on the X Chan tab are unique to this layer. Those on the Film and
FilmCal tabs pertain to any layer using the film. Each EIES detector channel
measures an emission line that is unique to the material. However, other materials
being evaporated at the same time may have emission lines that overlap the
bandwidth of the desired material's filter. In that case, a portion of the unwanted
channel's signal must be subtracted from the reading. Cross Channel Calibration
(xChan) establishes the amount of the unwanted signal(s) to subtract.
Figure 3-15 Cross Channel Grid
The channel listed at the top left of the form, 1 in the example, is the channel being
measured. A percent of the channels in the grid will be subtracted from that
measurement channel. Up to four cross channel readings may be subtracted.
Cross channels must be different from the measurement channel.
xChan #: The readings of the channel selected at the top of the form will be
modified by subtracting a portion of each xChan# readings. Select value None for
any unused xChan Cross channels.
xChan%: The percent of the xChan signal to be subtracted from the measurement
channel reading. 0.00 disables the function.
XChan Subtract: Select Current or Rate to be subtracted