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7.7
RD200 TEXT INSERTION MODULE
The RD200 text inserter module is a single channel video-processing device used to
write up to five (5) lines of text information onto a video picture. The displayed text is
used to display labeling and feedback information to the system operators through the
video monitors. Information such as, camera identification, time/date display, monitor
number, current operator access and other system operation information can all be
displayed.
Some other applications for the RD200 text inserter modules are text labeling for VCR
recorded signals (recorded camera identity and time/date), display of alarm detection
information. Text can be displayed in a variety of modes including straight forward white
text over the video picture, white text with black shadowing, white text with a solid black
background for the entire text insertion window, reverse mode to exchange white and
black display. (i.e. give black text on a white background or shadow.), Normal or double
height text when bold displays are required. (e.g. alarm display, for VCR recording to
increase replay readability). A text display can be FLASHED to attract the system
operator's attention.
The positioning of the text on the screen is programmable from the
Setmax Configurator. No manual settings are done on the RD200 module itself, so
modules may be swapped and changed without worrying about resetting DIP switches
or trim pots for each application.
Operation
The RD200 text inserter module is designed for use in the MAXPRO-Net video switching
subrack and occupies one slot. It is capable of processing one video signal only; so
one RD200 module is needed for every video output channel requiring text insertion.
The cascade input (for each slot) is used as the video input to each RD200 module. The
processed video signal (video + text) is returned at the video output for that slot.
The usual implementation of a RD200 module is as follows. The video output from a
video-switching module (RD85) is patched to the cascade input of the allocated RD200
module. The resultant output from the RD200 module (video + text) is then taken away
as the actual video output for that video switching channel.
The slot allocation for the RD200 modules is totally variable (programmable at the time
of system configuration). As it occupies a slot position in the video switching subrack
(i.e. another possible video output channel position), it may sometimes be desirable to
locate the RD200 modules in a separate (stand-alone) video switching subrack. This all
depends on the video output channel requirements within a given system application.
The RD200 module has an in-built video distribution amplifier (VDA) to buffer the
processed video signal. The VDA gives a true 75-ohm drive capability at its output.
Rev. C
7.7-1
HMXMU001018
10/06
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