FLIR PT-602CZ Installation Manual page 45

2 Basic Operation and Configuration
Unable to View Video Stream: If the video stream from the camera is not displayed it could be that
the packets are blocked by the firewall, or there could be a conflict with video codecs that are installed
for other video programs. If necessary, test to make sure the video from the camera can be viewed by
a generic video player such as VLC media player (http://www.videolan.org/vlc/).To view the video
stream, specify RTSP port 554 and the appropriate stream name such as "ch0". For example: rtsp://
192.168.250.116:554/ch0
Noisy image: A noisy image is usually attributed to a cable problem (too long or inferior quality) or the
cable is picking up electromagnetic interference (EMI) from another device. Although coax cable has
built-in losses, the longer the cable is (or the smaller the wire gauge/thickness), the more severe the
losses become; and the higher the signal frequency, the more pronounced the losses. Unfortunately
this is one of the most common and unnecessary problems that plagues video systems in general.
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 marine 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 PT-602CZ 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. 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)
427-0038-00-12 Version 110 March 2018 45