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Delta-88 Connections (cont.)
Composite Video Outputs (Only When Using The VSM-8 Video Switching Module)
The VSM-8 Video Switching
Module has a total of eight composite
video outputs marked 1 through 8.
Actually only seven outputs are used,
since the inclusion of the VSM-8 re-
moves one zone card. The outputs
numbered 1 through 7 correspond to
the first seven room buttons on the
front of the Delta-88 reading left to
right. Connect the composite video
cables to the Delta-88 corresponding to
the appropriate room. Please note that
the numbers on the VSM-8's output are
laid out differently than the AIB-50
Audio Input Board.
In this diagram, the composite video signal is being sent to both TVs in zones 1 & 2. For audio
distribution several options exist and here two are highlighted. In zone one, the fixed line-level
audio signal is also being sent to the room's TV such that when a central video source is selected
on the room's keypad and the TV is set to an external input, the video source appears on screen.
The audio will both come out of the TV's speakers as well as the
room's speakers, with the TV's sound level controlled from the
TV's remote control and the room's sound controlled from the
keypad. In zone two, the TV will only receive the central video
sources video output when set to an external input. The audio
will only come out of the room's speakers using the keypad for
sound level control. Several other audio routing options exist
and are discussed in upcoming sections.
When using a single zones composite video output to drive more than one TV, make certain
to include one ISO-V Video Isolation Amplifier for every additional TV. When more than one
TV is fed a single composite video signal, a wavy interference may appear on both TVs. The
ISO-V allows for a clean split of a single composite video signal and will assist in eliminating
these wavy line forms. Furthermore, if you are running exceptionally long composite video
signals and experience a reduced level of video quality, the use of an ISO-V will improve and
enhance the video image.
AC Connections
The Delta-88 has two AC EIC connectors on its rear panel. The first is for
its own power and is plugged into the ACC-3000 or directly into an AC outlet.
The second is used as a switched outlet to power the PCT-8 (when used) or a
second Delta-88. Connection of the AC lines will be discussed in upcoming
sections.
VSM-8
RAM-50
RAM-50
RBM-50
VIDEO SWITCHER
1
2
V
ADA BUS™
I
D
3
4
MUTE L.V.
E
O
5
6
I
ZONE L.V.
N
OUT
P
8
7
U
T
LINE
LINE
R
L
V
7
8
FIX
I
D
AC
LOOP
5
6
E
VAR
LOOP OUT
O
SPEAKER
SPEAKER
3
4
O
SUB
+
U
+
T
1
P
2
U
BRIDGED
-
AC INPUT
T
-
L
L
R
L
R
TV
TV
O
O
20
AUDIO
RAM-50
RAM-50
RAM-50
RAM-50
INPUTS
LINE
LINE
LINE
LINE
FIX
FIX
FIX
FIX
FIX
VAR
VAR
VAR
VAR
VAR
SPEAKER
SPEAKER
SPEAKER
SPEAKER
+
+
+
+
+
-
-
-
-
-
R
L
R
L
R
L
R
L
R
Zone 1
Zone 2
ISO-V
12V AC
TRANS-
FORMER
INPUT
HI-Z INPUT
OUTPUT
LOOP
ZONE L.V.
OUT
AC
LOOP OUT
AC INPUT
1
2
3
4
5
6
7
8
5
7
7
5
3
1
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