FAQ - Frequently Asked Questions

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  • No : 5268
  • Date of Issue : 2021/03/26 11:54
  • Last Updated : 2022/07/07 11:09
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(AA) The signal-to-noise ratio is bad

(AA) The signal-to-noise ratio is bad (there is a lot of baseline noise). (AA-7800/7000 series)
Category : 

Answer

Cause1: Either the hollow cathode lamp for the target element has not been installed, or it has been installed in a socket that differs from the analysis conditions.
Corrective Action1: Correctly install the hollow cathode lamp for the target element. Click here for Replacing the Hollow Cathode Lamp.
 
Cause2: The window plates at left and right of the burner compartment are soiled.
Corrective Action2: Wipe off the soiling with a soft cloth moistened with alcohol.
 
Cause3: The slit width setting is not appropriate.
Corrective Action3: Change the slit width to suit the target element by referring to the standard analysis conditions.
 
Cause4: The lit time of the deuterium lamp has exceeded the cumulative life time of the lamp. The deuterium lamp is not lit.
Corrective Action4: Replace the deuterium lamp. Click here for Replacing the Deuterium Lamp
 
Cause5: The lit time of the hollow cathode lamp has exceeded the cumulative life time of the lamp. The hollow cathode lamp does not light.
Corrective Action5: Replace the hollow cathode lamp. Click here for Replacing the Hollow Cathode Lamp.

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