email: sales@cairn-research.co.uk tech@cairn-research.co.uk
+44(0)1795 590140 www.cairn-research.co.uk
Common troubleshooting issues
1) Darker image on one side (vignetting)
Observations & likely cause
• Image appears darker on one side, known as vignetting
• Often observed when changing from split-mode to single-channel (bypass) mode due to
sub-optimal mirror positioning.
Resolution
• Locate the ‘Trim’ adjustment on the underside of the unit and loosen the clamp screw if required.
• Slide the Trim adjustment until both images are evenly illuminated.
• The Trim control can then be locked in place by re-tightening the clamp screw.
