MCS260 
CORNERSTONE 260 MONOCHROMATORS 
43 
 
 
 
12 TROUBLESHOOTING 
This section suggests solutions to potential issues that  may be encountered  when operating the 
Cornerstone monochromator.  If the tips in this section do not restore the instrument to working condition, 
contact Newport to arrange for technical support or repair.  Contact information can be found in the 
Warranty and Service section of this user’s manual. 
 
12.1 CORRUPTED MEMORY 
 
The monochromator comes with calibration parameters, which are stored in a file on the memory 
stick shipped with the instrument.  If these parameters were corrupted from, possibly, performing 
an incorrect field calibration, they will need to be reset.  Other possible causes include electrostatic 
discharge or other high field radiation near or in contact with the instrument. 
 
The instrument parameters need to be reloaded from the calibration parameter sheet.  Use the 
utility program and select the first grating.  Update the parameters for this grating.  Then go to the 
second grating and third grating (if equipped) to also update these parameters. 
 
 
 
 
 
Figure 32:  Entering Calibration Values in Utility Software