42/24-10 EN Rev. 9 Chapter 9: Inspection and Maintenance 9-23
Limas11: Amplification Optimization
Definition The amplification optimization procedure automatically seeks and identifies the
optimum measurement range for the sample and reference receiver analog/digital
converter.
When should
amplification
optimization
be performed?
Amplification optimization should be performed,
• after the lamp has been replaced,
• after a module (sample cell, calibration cell, interference filter, receiver) has been
removed or inserted in the beam path,
• if the status message No. 301 “Measurement value exceeds the analog/digital
converter value range” is present (with system housing closed).
Amplification optimization alone cannot correct the causes for the status messages
No. 358 and 359 “Lamp intensity above or below (middle of) permissible range”.
How should
amplification
optimization
be performed?
• When the lamp has been replaced:
• Write down the serial number of the new lamp prior to installation.
• Perform amplification optimization for all sample components, thereby
entering the serial number of the new lamp.
• When a module has been removed or inserted in the beam path:
• Write down the serial number of the installed lamp.
• Perform amplification optimization for all sample components, thereby
entering an arbitrary lamp number.
• Perform amplification optimization for all sample components, thereby
entering the serial number of the installed lamp.
• When the status message No. 301 is present:
• Perform amplification optimization for each sample component for which the
status message is present.
Softkeys New Lamp Optimizes all receiver signals for all sample components;
this overwrites any stored initial intensities with a new initial value.
Optimize Optimizes receiver signals for a specific sample component;
this does not overwrite the stored initial intensities.
Optimize All Optimizes receiver signals for all sample components;
this does not overwrite the stored initial intensities.
Test Gas The zero gas supply should be turned on during amplification optimization.
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