LSXE/ CQXE/ USVIS/ USPRO Signal Level Diagnostic Test in EZMQC

  1. Connect instrument to EZMQC.
  2. In EZMQC, Go to Sensor --- Diagnostic --- Hardware Checks. Then “Sensor Diagnostic Test” dialog will pop out. In this dialog, for CQXE, USVIS and USPRO, make sure that the specular door is closed before signal level test.

Note: If the specular door is open, go to sensor --- Set Modes. Choose or add any specular included mode. Standardize to have the specular door close. Then Go back to the above procedure.

  1. Click “Signal Level”. Put large view area port plate and the instrument white tile on the reflectance sample port. De-select the “Integrator Zero”, “Graphic Display” and “Raw Data Table”
  2. Click on “Flash” button. Instrument will take a reflectance measurement and display data in the table form. Six items will be filled in the table for both the monitor and samples channels, including Max Counts, Min Counts, Average Counts, Maximum Pixel, Dark Count Max, and Dar Count Min.


Pay attention to the monitor and sample Max Counts’ values. Max Counts are the peak values for the sample and monitor channel. With the instrument white tile and LAV port plate, the Max Counts values should not below 15000, and are generally in the certain range for these instruments (Table-1). Also, the monitor channel value is typically within 80% -120% of the sample channel value. If the values of the sample and Monitor fall outside of these bounds, the instrument may not work properly.





Max Counts

Max Counts













Table-1: Max Counts values range on sample and monitor for LSXE CQXE USVIS and USPRO

a) Main Table


Following are the other 4 result views that you can check in this signal level test.

 b) Raw Data Table


c) Graphic Display


 d) Integrator Zero


e) Graphic Display + Plot Dark



This view varies on different type instruments. Following are examples of views of LSXE, CQXE and USVIS. 


 1) LSXE Graphic Display + Plot Dark



2) CQXE Graphic Display + Plot Dark



3) USVIS Graphic Display + Plot Dark



Note: If you have any question on the signal level test, please send all of these data and graphs to us. For the main table and all the graphs (views a, c, d, e), click the “Signal Level Test” dialog, press “Ctrl” + “Alt” + “Print Screen” buttons to copy each view, and then you can paste each view into a word document. For the raw data table (view b), click “To Clipboard” button to copy the data, and then paste it in to a word/excel document.






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