DESCRIPTION
These devices transmit and receive relay and contact control
signals encoded on all 26 HD and SD video formats like HD-TVI, HD-CVI,
AHD, NTSC, and PAL video coaxial cable. You can insert your contact
relay, alarm, and control signals anywhere a video signal is being used
on Unshielded Twisted Pair wire (UTP) or Coaxial cable. Two relay
control input signals are inserted onto one line of the vertical
interval of the video and will travel over any distance the video
signal can go. One of the contacts can be used as a signal integrity
alarm for complete signal security.
The ATU-2HD RELAY TRANSMITTING UNIT and the ARU-2HD RELAY
RECEIVING UNIT used together create a two channel, alarm relay control,
or remote-control system.
Both units have a DIP Switch for line selection signal insertion
control and video mode selection. By selecting different lines of
operation, you can provide up to 8 control signals by installing
additional units in series with the video signal. The DIP switch is
also used to select the type of video you want to use. You can s elect
HD-TVI, HD-CVI, AHD, NTSC, CVBS, and PAL video formats.
The relay control signals are inserted onto the Vertical Interval
of the video signal and will not interfere with the image.
One channel may be used as a system alarm that will operate upon
loss of power to either terminal or loss of transmission path (coax
cable cut). In the event of power failure to the ATU-2HD or ARU-2HD the
video thru-put will not be interrupted. This loop-through method allows
you to place the transmitter/receiver pair at either end, so you can
send the signals in either direction. Also, if you use two sets of
units, you can send relay contact control in both directions at the
same time on any coaxial or twisted wire path.
For a gate camera you can put a button at the gate to ring a bell
and then send a switch control for a relay to open the gate going in
the other direction all on the same video signal without having to run
additional wires.
Contact closures to the ATU-2HD input will be repeated as relay
closures at the ARU-2HD output.
The system is housed in a bone colored ABS enclosure that has a UL
flame rating of 94-VO and is powered by any 12 VAC or VDC power supply,
a 12 VDC is supplied with the units. The system has a power on, video
on LED for installation and trouble shooting of the video system. When
power is on and video is not connected the LED will flash on and off to
indicate a video loss has occurred.
ATU-2HDisb
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