427-0030-00-12 Version 180
March 2018
36
2
Basic Operation and Configuration
Unable to View Video Stream:
If the video stream from the camera is not displayed in a client
program, 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.
When displaying video with FLIR Latitude or a VMS for the first time, the Windows Personal Firewall
may ask for permission to allow the video player to communicate on the network. Select the check
boxes (domain/private/public) that are appropriate for the network.
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.
For example: rtsp://192.168.250.116:554/ch0.
Refer to
Sensor > Modules > Video, pg. 30
).
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, or the smaller the wire gauge, 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.
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.
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 camera
visible camera
