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4 • Troubleshooting
4.10 No Spectra Collected
•
Spectral range was not programmed
In Chromeleon 7, select a spectral range in the instrument method or on the
Dionex PDA ePanel.
In Chromeleon 6.8, select a spectral range in the program or on the Dionex
PDA Control panel.
•
Detector and instrument method/program (or ePanel/Control panel)
connected to different timebases
In Chromeleon 7, add the detector to the same instrument as the instrument
method or the Dionex PDA ePanel.
In Chromeleon 6.8, add the detector to the same timebase as the program or
the Dionex PDA Control panel.
4.11 Low Spectral Resolution
•
Bunch width too wide
Select a bunch width setting of 1 nm, and then check the resolution again.
•
Bandwidth too wide
Select a bandwidth that includes only the absorbing wavelength.
•
Incorrect reference wavelength
Select a reference wavelength where minimum absorbance occurs. Make sure
the reference wavelength is included in the wavelength range.
•
Wavelength range too narrow
Make sure the spectrum wavelength range includes both the reference
wavelength and reference bandwidth. Make sure the peak absorbance
wavelength is not included in the reference bandwidth.
•
Reference bandwidth too wide
Select a narrower reference bandwidth. The reference bandwidth should not
overlap the bandwidth.
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