Clarus 600/680 User’s Guide
4-87
Attenuating Detector Signals Going to a Recorder
The purpose of attenuation when a recorder is attached and configured is to bring a
peak on scale by amplifying a weak signal or reducing an overly strong signal.
Attenuation in this case affects only the presentation of the signal.
Acceptable attenuation values are of the 2nd power, for example, 1, 2, 4, 8, 16, etc.,
up to a maximum of 64. The system rounds off values to the next highest power of
2. For example, if you go to the Atten field and select 1 then an attenuation of 32
appears on the screen.
The range of attenuation values that may be used is 1 – 65,536. Raising the
attenuation decreases the signal to the recorder. Lowering the attenuation amplifies
the signal to the recorder.
To change an attenuation value (an FID detector is used as an example):
1. From the System Status screen touch the FID button
to display the FID
tab screen page.
2. To change the attenuation touch the Atten field. Use the drop down menu to select
an attenuation range for the detector that is appropriate for your analysis.
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