15
Source Input Selection & Control Beyond The Standard 8 Sources
VS-3 Video Switcher (8 In x 3 Out)
• an ADA Bus™ Component • can be used to provide
additional source inputs to the standard eight sources the Delta-88 can accept. The VS-
3 has multiple addresses, several of which permit the VS-3 to act as a source to the Delta-
88. This permits a system, loaded with seven audio only sources and up to eight video
sources, to access all fifteen sources from a 3000 Series keypad. The audio only sources
would be labeled what they are on the keypad's buttons. The video sources would all
be accessed through an eighth source button labeled VIDEO. Every time the VIDEO
button is pressed, the VS-3 advances to the next input. To provide the user with a sense
of where they are, the VS-3's display will appear on the MC-3000 or MC-3800 telling the
user what video source is selected to that room. Furthermore, the keypad's transport
buttons would correspond to the selected source (when using a PCT-8 Source IR
Controller for the video sources). Since a single VS-3 has three independent outputs, as
many as three rooms can independently and simultaneously select their own video
source using one VS-3. Each room's keypad will have the VIDEO button programmed
to control a specific VS-3 output and since the VS-3 has several addresses, multiple VS-
3s can be used to provide independent video switching to the entire house. Please note,
that the Delta-88 has only eight source inputs and since these are common to all zones,
special design considerations need to be considered when using the VS-3 as a scrolling
input selector. Several options exist and here are some examples:
Option 1 - The selected video source (can also be an audio only source) is common to all rooms,
no independent simultaneous selection. In this scenario, a single VS-3 is used to expand
the system's source input capability. The VS-3's output is fed back into the Delta-88 on
the same source input number as it is on the keypad (i.e. AUX or VIDEO button). Every
time this button is pressed, the VS-3 will advance to the next source with the keypad
displaying that source's name (off the VS-3) and the transport functions operating that
source (use of a second PCT-8 Source IR Controller). Since the VS-3's output is fed back
into the Delta-88, the signal is common to all rooms which select that source.
Option 2 - The selected video source is independent to specific rooms or all rooms and video
sources are capable of being selected simultaneously. In the previous option, the VS-
3's output is fed back into the Delta-88 and is therefore common to the whole house. To
provide independent and simultaneous selection, you will need to use more than one
output of the VS-3 and perhaps several VS-3s to accommodate the entire house. In these
applications, the video signals and stereo audio signals need to be distributed to each
Description of the DELTA System (cont.)
OFF
1
AV 1
VCR1 TO TV
2
3
OUTPUTS
A
V
AV 2
A
V
AV 3
A
V
AV 4
A
V
AV 5
A
V
AV 6
A
V
AV 7
A
V
AV 8
A
V
INPUTS
A/V
SPLIT
A
V
RF 1
A
B
RF 2
A
B
RF 3
A
B
LABEL
VS-3
3 L
2 L
1 L
8 L
7 L
6 L
5 L
4 L
3 L
2 L
1 L
S 3
S 2
S 1
V 3
V 2
V 1
3 R
2 R
1 R
8 R
7 R
6 R
5 R
4 R
3 R
2 R
1 R
S 3
S 2
S 1
S 4
V 8
V 7
V 6
V 5
V 4
V 3
V 2
RF 3
RF 2
RF 1
RF B
RF A
FUSE
AC INPUT
(50-60Hz 25W)
3/8A S.B.
250V
4
3
2
1
2
1
+
-
V 1
VS-3