PerkinElmer 200 UV/VIS Series User Manual page 169

Configuring Turbochrom with the Series 200 UV/VIS Detector Enabling External Control
IMPORTANT
In the "Series 200 UV/VIS mode," the transmitted digital absorbance values must always be
positive. To allow for negative drift in the chromatogram, a 0.3AU offset is automatically
applied to the digital chromatographic signal. This offset is automatically removed by Turbo-
chrom in its chromatographic displays. The offset is also present in both recorder and com-
puter output analog signals. It is not affected by the current setting of the Analog Offset in
the detector's Analog Output Setup screen. The current setting of the Analog Offset in the
detector's Analog Output Setup screen will be restored when the detector is released from
control by Turbochrom.
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