Thermonicolet Omnic Software User's Guide 6.1 (PDF) - Charles E ...

When you click the button, the check begins and a gauge shows its progress:
When the check is complete, the results appear:
A green check mark indicates that the desiccant is still effective. Choose OK to
close the dialog box.
A yellow circle indicates that the desiccant is no longer effective and should be
replaced or renewed. Click the Explain button for instructions.
Note
This feature measures humidity more accurately than the indicator under the
desiccant compartment cover. For this reason you should rely on the Check
Desiccant button to monitor the performance of the desiccant when the spectrometer
is in use. Rely on the indicator only when the spectrometer is in storage. ▲
Aligning the spectrometer
Note
Important
If your spectrometer can be aligned automatically, you can click the Align button
on the Diagnostic tab to perform an automatic alignment of the interferometer to
maximize the detector signal.
The spectrometer power should be on for at least 15 minutes (1 hour or longer for
best results) before you perform an alignment. Aligning the system before it has
warmed up and stabilized may give inconsistent results. ▲
Set Gain to 1 before clicking the Align button. ▲
The detector signal is shown in the live display during portions of the alignment.
(The signal may take a few seconds to appear, depending on your spectrometer
model.) Remove any accessories or samples from the sample compartment before
aligning the spectrometer.
Align the spectrometer’s interferometer after installing a new beamsplitter,
replacing the laser or moving the spectrometer. It is also a good idea to align the
interferometer if the signal intensity has dropped significantly from its usual level.
Note
Sampling accessories and some spectrometers must be aligned manually, not by
using the Align button. If your accessory or spectrometer requires manual alignment,
watch the live display on the Bench tab while making the appropriate adjustments on
the accessory or spectrometer. The goal of manual alignment is to increase the
maximum (Max) value above the live display to its highest possible level. See the
manual that came with the accessory or spectrometer for instructions. See “Using the
live display” for more information about the live display. ▲
Configuring the system
You can configure the system for the hardware you are using or perform other
tasks described below by clicking the Configure Bench button. You must
configure the system after you do any of the following:
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