POWER LED
POWER SWITCH,
(16)
VIDEO SWITCHER CARDS
OUTPUT AMPLIFIER’
M M M
Figure B-l
Location of Cards in a
S-Monitor Remote Video Switching Site
In remote sites with
than 128 video inputs, a
expander card is used. It is located
in the second card cage. The eight monitor outputs from
the first cage are muted to the video inputs of the
expander
The
of the
is
set to give correct identification to the incoming video
from the first card cage.
B.l.l ADDRESSING
SWITCHER CARDS
The
step in setting card addresses is to identify the
correct address for the card in question. When systems
are shipped, each card will be marked on the
edge
with the camera input numbers.
In the remote video switching systems, cameras are
numbered serially throughout the system. For in-
stance, if a system contains 280 cameras, they are
numbered l-280. This means that cameras assigned to
a specific remote site will not necessarily begin with
number 1. The lowest numbered camera at each
remote site
be connected to switcher input 1. For
example, if cameras 104-135 are assigned to remote
site 2, they
be connected to switcher inputs l-32.
NOTE: Sections
through
pro-
vide instructions for addressing switcher
located at a single remote video switching site.
Follow these procedures for each remote site in
the system. Keep in mind that cameras are num-
bered sequentially throughout the system, and
only cameras assigned to
remote site will
begin with number 1.
Remote Site
In a single-card-cage remote video switching site,
the
cards require addressing. Looking at
the card cage from the front, the left card is addressed
for video inputs 1-8, the second card 9-16, and so on.
The sixteenth card from the left is
for inputs
121-128.
B.1.1.2
Remote Site
In a remote site with
than 128 video inputs
switched to 8 monitors, a second cam cage is added
at the site. This cage will house from one to 16
cards, with camera inputs numbered from
129 up to a maximum of 256. The left-hand
is
addressed for inputs 129-136, and so on, Refer to
Figure B-2.
X820-792
B-2
