Teledyne Princeton Instruments NIRvana HS, System Manual

Page: 68 / 107

68 NIRvana HS System Manual Issue 1.0
8.5.2 ADC Offset (Baseline Offset)
ADC offset (also known as baseline offset) provides another way of dealing with dark
charge. Refer to
Section 7.3.1, Dark Charge , on page 50 for additional information. By
offsetting the baseline signal, much of the background is ignored during conversion.
During the exposure time, the sensor collects a charge pattern and an NIR signal in
addition to the signal of interest. The longer the exposure time and the warmer the
detector and the environment, the larger and less uniform this background will appear.
CAUTION!
!
If a sudden change in the baseline signal is observed, there
may be excessive humidity in the detector vacuum
enclosure. Turn off the camera and contact Teledyne
Princeton Instruments Customer Support for instructions.