FLIR FB-Series O User And Installation Manual page 26

2 Basic Operation and Configuration
Cable characteristics are determined by a number of factors (core material, dielectric material, and
shield construction, among others) and must be carefully matched to the specific application.
Moreover, the transmission characteristics of the cable will be influenced by the physical environment
through which the cable is run and the method of installation. Use only high quality cable and ensure
the cable is suitable to the environment.
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 FB-Series O 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. In fact the thermal imaging camera
often provides a considerable advantage over a conventional camera in this type of back-lit situation.
However, the sun may introduce image artifacts that will eventually correct out and it may take some
time for the camera to recover. The amount of time needed for recovery will depend on how long the
camera was exposed to the sun. The longer the exposure, the longer the recovery time needed.
Figure 2-3: Images facing sun from standard camera (left)
and thermal camera (right)
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