Teledyne Princeton Instruments Lansis, System Manual

Page: 88 / 101

90 Lansis
®
System Manual Issue 1
EAR99 Technology Subject to Restrictions Contained on the Cover Page.
If the green POWER LED still remains extinguished, the power supply must be returned
to Teledyne Princeton Instruments for repair. Refer to
Contact Information on page 100
for complete information.
E.1.3 Overexposed CCD
It takes an enormous power density to damage the CCD at room temperature or
cooled. It can be done (e.g., imaging the sun with a large aperture lens, so that the
silicon is heated.)
What can happen if the CCD is cold is a temporary elevation of the dark current. If the
CCD is over-saturated, electrons pool in the substrate and are clocked out slowly (over
hours or even days). To clear the charge, it is best to return the CCD to room
temperature, then run the CCD (set short exposure, then click run in LF) while it is
cooled down to normal operating temperature.
E.1.4 Camera Stops Working
Problems with the host computer system or software may have side effects that appear
to be hardware problems. If you are sure the problem is in the camera system hardware,
perform these preliminary system checks:
• Examine the STATUS LED on the rear panel of the camera. See Table 2-2 for
decoding STATUS LED states.
• Turn off all AC power.
• Verify that all cables are securely fastened.
• Turn the system back on.
If the system still does not respond, contact Customer Support. Refer to Contact
Information on page 100 for complete information.