ANNEX B - CCTV DETAILS
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B 1. VIDEO TEXT OVERLAY DETAILS
The FV300 FlameVision detectors can be supplied with a built in colour video camera which looks
out over the same field of view as seen by the IR array and other flame sensors. The camera
provides a balanced output video signal on twisted pair connections suitable to feed into a CCTV
system. (An active balun may be required to connect to some systems.)
The detector superimposes a text overlay (12 lines of 24 characters) onto the live video output to
provide identity and status information. The content of the overlay changes depending on the state
of the detector and is described below.
Detectors without cameras can be configured to show identity and status information on the video
output. In this mode the text overlay is displayed on a plain blue background. The content and
layout of the overlay is the same with or without the camera.
The following describes the overlay configured in standard mode. The fields are shown enclosed
in ‘< >’.
Identity and Location Information:
Each detector can be configured with a user defined text string up to 24 characters long. This is
normally used to identify the detector and its location. This information is programmed using the
PC configuration tool. The identity and location will be displayed on the overlay if an event occurs
but can be permanently shown if required.
In addition to the upper (ABC…) and lower (abc…) case alphabet and numbers (0123…), the
following characters may be used in the identity and location string:
!”#%&’()*+,-./:;<=>?[]_|~ and {will be display as ((with } as ))
Characters that cannot be displayed on the overlay will be shown as a “?”.
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