4
Troubleshooting
Problems and Solutions
172
DXRxi User Guide
Thermo Scientific
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Make sure the 50x objective is fully rotated into the front objective position
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Make sure the correct video calibration for your 50x objective is selected in the
OMNICxi Acquisition window so the scales are synchronized.
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Make sure the sample is in sharp focus
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Make sure the crosshair in the microscope eyepiece is centered on the period in the
“0.25” feature on the test sample
If the image resolution test fails again, contact us.
Sample Bands are too Small
The Raman signal is too small. You can increase it by doing one or more of the following:
• Increase the setting of exposure time in the software
• Increase the aperture size by setting in the software
• Select a slit instead of a pinhole aperture
• Increase the setting of laser power in the software
If this problem persists, contact our sales or service representative in your area.
Sample Bands Are Too Large or CCD Overflowed
The Raman signal is too large, which saturates the CCD. You can decrease the signal by doing
one or more of the following:
• Decrease the setting of exposure time in the software
• Decrease the aperture size by setting in the software
• Select a pinhole aperture instead of a slit aperture
• Decrease the setting of laser power in the software
• Make sure all doors of the system are tightly closed
If this problem persists, contact our sales or service representative in your area.
No Raman Signal Appears in the Live Display or Spectrum Has No Sample Bands
• Make sure all doors of the system are tightly closed
• If the laser power is off, turn on the laser
• Increase the laser power in the software
Summary of Contents for DXR xi
Page 12: ...1 Introducing the DXRxi Raman Imaging System Trademarks 6 DXRxi User Guide Thermo Scientific...
Page 14: ...2 DXRxi Microscope Operation 8 DXRxi User Guide Thermo Scientific...
Page 64: ...Safety Information 58 DXRxi User Guide Thermo Scientific Microscope Safety Labels or...
Page 65: ...Safety Information Thermo Scientific DXRxi User Guide 59...
Page 66: ...Safety Information 60 DXRxi User Guide Thermo Scientific...
Page 67: ...Safety Information Thermo Scientific DXRxi User Guide 61...
Page 68: ...Safety Information 62 DXRxi User Guide Thermo Scientific...
Page 166: ...3 OMNICxi Software Operation Acquire and Analyze Data 160 DXRxi User Guide Thermo Scientific...