User Guide

427-0089-00-12 Version 180 August 2020 41
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Basic Operation and Configuration
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://192.168.0.250:554/ch0, and
rtsp://192.168.0.250:554/ch1
Port 554 is the standard RTSP port as well as the default for the camera. Typically, if the default port
has not been changed, the port can be left out of the streaming command, such as:
rtsp://192.168.0.250/ch0.
Refer to Video Page, pg. 45 for additional information on RTP settings and stream names.
Unable to control the camera
If the camera does not respond to commands, the user may not have control of the camera. The
web server allows two sessions to be connected to the camera at a time. By default, control of the
camera will automatically be requested.
Noisy image
With the analog video signal, 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 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.
Performance varies with time of day
There may be differences in the way the camera performs at different times of the day, due to the
diurnal cycle of the sun. Recall that the camera produces an image based on temperature
differences.
At certain times of the day, such as just before dawn, the objects in the image scene may all be
roughly the same temperature. Compare this to imagery right after sunset, when objects in the
image may be radiating heat energy that has been absorbed during the day due to solar loading.
Greater temperature differences in the scene will allow the camera to produce high-contrast imagery.
Performance may also be affected when objects in the scene are wet rather than dry, such as on a
foggy day or in the early morning when everything may be coated with dew. Under these conditions,