Hunter SpectraProbe XE, Hardware User Manual, Page: 28 / 78

1-18 Introduction 11/02
Sheet Break/Seam Detector
The sheet break/seam detector option allows the system to end a run and/or move the sensor off-line
upon detection of a sheet break/seam.
4-Channel Alarm Relay
The 4-channel relay board installed in the support unit activates user-supplied systems such as alarm
systems that signal when one of the four measurement parameters (the three components of the color
scale and the fourth trace) is out of tolerance.
Analog Output Board
The optional SpectraProbe XE analog output board supplies four channels of 4-to-20 mA output based
on numerical values reported by the sensor. Depending on selections made in the software, the analog
output can represent either color difference or whole scale values. This output can generate a
continuous signal that may be fed into closed-loop control (CLC) or statistical process control (SPC)
systems.
The normal analog output is color difference. In this mode, the analog outputs represent the difference
between the measured value and the standard value for each parameter of the selected color scale,
automatically scaled by the tolerance, T, in use for each parameter such that the analog range always
represents -2T to +2T. Thus, a device such as a chart recorder which is looking at the analog output,
does not have to be re-scaled when tolerances are changed.
If whole scale analog output is selected in the software, the analog outputs represent the measured whole
scale values in the selected color scale. The scaling is then determined by top and bottom of scale
values entered in the software.
Blue Denim Check Tile
This 3.5-inch round blue tile may be placed in the automatic tile holder and used as the check tile in
place of the standard green tile. See your software manual for a description of the color check.
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