IMPORTANT:
Modulator Deviation Control:
Contrast control located underneath the cover in the upper right corner of the unit.
This applies only when the MYW-MD is used with a CCTV camera. To adjust the picture for more contrast, turn the
variable resistor clockwise with a small screwdriver.
OPERATIONS
MODULATOR:
Using the MODULATOR to Integrate a CCTV camera with an Aiphone 2-wire video system:
1. The view from the CCTV camera can be seen on the Aiphone MY monitor by pressing the MONITOR button. With
multi-camera systems (MY-2CD, MYW-P3CB & MYW-P3L), the cameras will come up sequentially. (e.g. One
press of MONITOR button brings up camera 1, second press brings up camera 2.) After the last camera in the
system is activated, the next press of the MONITOR button will turn off the monitor. If the monitor is left on, it will
automatically time out after 2-½ minutes.
2. When using a CCTV camera with the LEF/MY system, an audio sub station can be installed near the camera to
provide both audio and video monitoring. The station is activated simultaneously from the LEF master
station
through the proper connection of the "K#" terminal of the master to the MYW-P3L adapter.
DEMODULATOR:
Using the Demodulator for VIDEO OUTPUT with the Aiphone 2-wire video systems:
1. When the call button is pressed on the MY door station, the inside monitor station will ring and the picture will
come
on. At that time, the video signal out of the MYW-MD adaptor will be present, and the picture can be seen
on the remote monitor.
2. When the MONITOR button on the inside Aiphone station is pressed, the picture will come up for approximately
2-½ minutes and video signal sent to the monitor via the MYW-MD.
3. The video signal can be connected to any receiving device that accepts a composite video signal (75 ohm, 1V
peak-to-peak). This could be a standard CCTV monitor, a video input on a switcher or a multiplexer
system that
modulates the video onto a cable TV channel. To take the video signal directly into a TV,
use a spare video input or
go through an RF modulator.
Using the Demodulator to integrate the MY video door station with a standard CCTV monitor:
(No audio communication or PanTilt is possible with this application)
1. To view the camera location at any time, the camera must be powered at all times, or a switch must be installed
to
turn it on. To do this, the PC board must be modified by adding a jumper wire in the location indicated on
the wiring
diagram on page 3.
2. There is no PanTilt control of the camera when used in this application. To adjust the angle of the MY-DC at the
time of installation, remove the Lexan® dome and move the camera head to the desired angle. Replace the
dome
and install the unit. If an MY-CA video door station is used, the camera view will be centered and is not
adjustable.
3. If the camera is powered continually, there will always be a video output from the MYW-MD. There is no audio
communication possible through the door station. This application will shorten the life of the camera.
SPECIFICATIONS:
Power:
18V DC. Use Aiphone model PS-18C (or PS-18YC/A with MY-1CD)
Current consumption:
100mA as Modulator; 500mA as Demodulator
Wiring distance:
ALL DISTANCES ARE USING 18 AWG WIRE
Modulator:
Max. 330' from MYW-MD to MY Monitor/adaptor
Demodulator:
Max. 30' from MY monitor when used for video output
Max. 330' from MY door station when used with a standard monitor
Power supply:
Max. 16' to MYW-MD
Dimensions:
5-1/2"H x 3"W x 1-1/2"D
COAXIAL CABLE:
75 ohm, copper center conductor, copper braid, 95% coverage.
DC resistance:
Max, 15
Ω
per 1000 feet.
Aiphone Communication Systems
1700 130th Ave. N.E.
Bellevue, WA 98005
(425) 455-0510
FAX (425) 455-0071
Toll Free Technical Support:
1-800-692-0200
FAX: 1-800-832-3765
E-mail [email protected]
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MYW-MD Instr.
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