Clarity INT9 - Manual (Page 18)

4 Using the INT9 card Clarity Hardware
Channel 1 (to 4)
For each channel of the INT9 A/D Card the name of the signal can be
edited in the Name field and the Set Units... button can be used to change
other signal parameters. Effects of these changes can be seen in other
fields of the respective Channel 1 (to 4) section.
Name
This field will be used to describe the signal in the Chromatogram
window.
Inversion of Signal
Inverts the polarity of the signal from the detector. This function can
also be used for easy correction of inversely connected wires.
Bipolar
Both positive and negative voltages will be measured. Unchecking the
Bipolar option will improve the resolution of the signal by 1 bit. On the
other hand, it will also restrict the measuring of negative signals (i.e.
below zero).
Set Units...
Invokes the Detector Units dialog.
Fig 10: Detector Units
l
Quantity – Field for entering a name of the y-axis in the graph of the
measured signal.
l
Units – Field for entering the unit symbol, along with the prefix.
l
Coefficient – Allows to enter the coefficient between the selected units
and mV (default).
l
Autoprefix – Allows to enter the unit prefix. In graphs, units will be
scaled automatically, while in the tables, units with the prefix entered
will be used.
Synchronize Start with Digital Input
Maps the INT9 A/D converter channel to selected External Start
Digital Input. It enables faster and more accurate synchronization of
channels with the start signal. Especially for short analyses the
necessary time lags at the start of the acquisition are significant. When
measuring multi-detector chromatograms it will minimize the time shift
between detector signals and thus improve the detection of peaks.
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