Installation Manual

Copyright© 2004, Alpha Communications®, All Rights Reserved.
AWD095 Rev. 2 (11/04)
APPLICATION
The VBV-4 video distributor unit is designed to be used with the
S.T.R.™ NoCoax video-intercom system(s) to provide multiple
video risers (lines) from a single camera video source. Each
VBV-4 provides up to four (4) amplified video data outputs and
a 5th output that may be used to daisy-chain to an additional
VBV-4 unit (if required). Each VBV-4 is powered by a separate
model NG20 15VDC power supply.
PROCEDURE
1. Read installation instructions to determine equipment lo-
cation and installation method.
2. Install equipment and wiring.
3. Check wiring and connect. Observe all local and
national electrical and building codes.
4. Apply power and check operation.
HOUSING INSTALLATION AND
EQUIPMENT LOCATION
VBV-4 VIDEO DISTRIBUTOR
The VBV-4 is usually located in the 'central equipment location'
where the VCU309 system amplifier/power supply is located.
You can mount the VBV-4 by using the provided plastic 'Din
Rail' mounting bracket. It must be located away from any source
of direct heat or extreme cold and in an accessible location. Keep
at least 3 feet (1 meter) away from transformers, light dimmers
or other electrical devices or wiring or sources of electrical
interference.
POWER SUPPLY
The model NG20 (or equivalent) 15VDC power supply plugs
into a conventional 117 VAC electrical outlet, using a separate
cord and plug, within 100' (30 meters) of the VBV-4, but no closer
than 3 feet (1 meter) from the VBV-4 unit.
NOTE: POLARITY MUST BE OBSERVED. Terminal 'B' is
positive (+) and terminal 'O' is negative (-), at all VBV-4
connections! Each additional VBV-4 should be powered by a
separate NG20 (or equivalent) power supply.
VBV-4 Video Data Distributor Unit
Installation and Use Instructions
Used with the S.T.R.™ Series
NoCoax Video-Intercoms for systems
with multiple video risers/lines
WIRING
Run 2 conductor #18AWG from the 15VDC power source to
each VBV-4 video distributor. If distance is greater than 100
feet (30 meters), use #16AWG cable. Use a separate cable from
the video-intercom cables, and route away from any other
cables. Before connecting, make certain wires are free from
shorts or grounds. Make connections as shown on following
page and as detailed in the following instructions.
FINISH INSTALLATION
1. Install VBV-4. Do not overtighten screws.
2. Install amplifier and accessory devices as needed.
3. Plug NG20 power supply into outlet. Observe all local and
national electrical and building codes.
4. Make sure all coaxial connections are connected properly
and no braid wires are touching or shorting to the center
conductors of the coaxial cables between the camera(s)
and the KBS-1 adaptor(s).
NOTE: The Alpha Communications
®
warranty is void if this
system is installed or used in any manner other than described
in this manual.
TROUBLESHOOTING
If the VBV-4 fails to operate as indicated in these instructions,
check the following points:
1. NO VIDEO OUTPUTS AT ALL: Check for 15VDC
power at each VBV-4 video distributor; and for 117 VAC
at power supply primary. Green LED on each VBV-4 should
be illuminated.
2. PROBLEMS WITH INDIVIDUAL VIDEO DATA
OUTPUT(S): Temporarily move cables from output (1-
4) that is not functioning, to one that is functioning
properly, to see if it is the VBV-4 output cable(s) that are
not functioning properly.
If these checkpoints fail to indicate the problem,
there may be an equipment fault. Contact the
factory or qualified service representative.