Ophir Optronics Ltd QSR Manual De Usuario

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Chapter 4 – Measuring with the Thermopile Head 
Calibration Factors 
 
Figure 4-8 Response Factor Dialog Box 
2.  Use the scroll bar to adjust the response factor in the Response Factor 
area. 
3.  Apply constant power to the thermopile head until the graph stabilizes.  
4.  Click Scale
5.  Block the laser for several moments to allow the head to cool down. 
6.  Click Ready
7.  Unblock the thermopile head. 
8.  Take a second reading.  
Adjusting Energy Calibration Factors 
Both power and energy readings are equally affected by changes in the 
absorption and/or sensitivity of the thermal disc. Therefore, changing power 
calibration changes energy calibration proportionately. In addition, adjusting the 
response time of the head can also affect energy calibration. For this reason, 
provisions are made to adjust energy calibration without affecting power 
calibration.  
To adjust the energy calibration factor: 
1.  Click the right mouse button and select Calibrate from the pop-up menu.  
OR 
Open the Functions menu and select Calibrate. The Adjust Calibration 
Factor
 dialog box appears. 
StarLab User Guide 
41