User Guide

427-0075-01-12 Revision 140 October 2019 55
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Basic Operation and Configuration
Check cable connector terminations. Inferior quality connections may use multiple adapters which
can cause unacceptable noise. Use a high-quality video distribution amplifier when splitting the
signal to multiple monitors.
Image too dark or too light: By default the PT-Series HD thermal camera uses an Automatic Gain
Control (AGC) setting that has proven to be superior for most applications, and the camera will
respond to varying conditions automatically. The installer should keep in mind that the sky is quite
cold and can strongly affect the overall image. It may be possible to avoid a problem by slightly
moving the camera up or down to include (or exclude) items with hot or cold temperatures that
influence the overall image. For example, a very cold background (such as the sky) could cause the
camera to use a wider temperature range than appropriate.
Eastern or Western Exposure: Once installed, the camera may point directly east or west, and
this may cause the sun to be in the field of view during certain portions of the day. We do not
recommend intentionally viewing the sun, but looking at the sun will not permanently damage the
sensor. The thermal imaging camera often provides a considerable advantage over a visible camera
in a back-lit situation. However, the sun may introduce image artifacts that eventually will be
corrected but it may take some time to recover. The amount of time needed will depend on how long
the camera was exposed to the sun. The longer the exposure, the longer the recovery time needed.
Figure 2-2: Images facing sun
thermal cameravisible camera