Thermo Scientific Nicolet iS50 User Manual page 29

Hardware Problems
Applications Problems
Thermo Scientific
To expedite and assist in problem diagnosis, please be prepared to send us a copy of your
diagnostics log file. The diagnostics log includes a history of important system parameters and
events that occur during system operation. To copy the diagnostics log to your Windows®
desktop, open OMNIC software and choose File > Copy Diagnostics File to Desktop. The
file can be attached to an e-mail message. For technical support, contact our local sales or
service representative.
This section lists common problems with ATR module components and how to resolve them.
No interferogram signal
If the interferogram signal displayed on the Bench tab in Experiment Setup is present when
the spectrometer is configured for FT-IR sampling through the main sample compartment
but the signal disappears when you press the ATR Touch Point, the ATR flipper mirror or
detector may be malfunctioning. Contact our local service representative for technical
support.
Interferogram signal is weak
If you notice a sudden drop in the strength of the interferogram signal displayed on the Bench
tab in Experiment Setup when the spectrometer is configured for ATR sampling, the ATR
crystal may be damaged or broken, the seal is broken or the ATR detector has failed. Contact
our local service representative for technical support.
Background spectrum has unknown features
If your background spectrum is significantly different from the background spectrum shown
in "Typical ATR Spectra," clean the crystal thoroughly using the instructions in
Crystal," and then collect another background spectrum.
If the features are still there, the ATR mirrors may be contaminated. Contact our local service
representative for technical support.
Quality of sample spectrum is reduced
If the quality of your spectral data is reduced, collect a new background and then remeasure
the sample. The background should be measured periodically (at least two times per day
during continuous use) and after the following significant events:
• You changed the beam path by selecting another Touch Point or experiment file.
• You changed a component in your spectrometer or the ATR module.
• You changed one of the Collect, Bench or Advanced settings in the selected experiment
(except Gain, Final Format, Number Of Scans or Correction).
1
iS50 ATR Module
"Cleaning the
iS50 ATR Module User Guide 27