Aiphone MYW-MD INSTALLATION INSTRUCTIONS

Special
Order
Products

MYW-MD

Video Modulator/Demodulator for MY series Video Systems

- INSTRUCTIONS -

The MYW-MD adaptor converts the video from a 2-wire signal to a standard coaxial video signal
(Demodulator mode). It can also be used to convert a standard CCTV camera's signal to a 2-wire signal,
compatible with Aiphone's MY series video monitors (Modulator mode).

MODULATOR

MYW-MD to integrate a Standard CCTV camera with an Aiphone Monitor

MY-DC

A1
A2

CCTV Camera

75 Ohm, 1V Peak-to-peak

(Independently powered)

JUMPER CLIP: (Located under rubber cover in upper right corner of the faceplate of the MYW-MD)
Set in Modulator (top) position from factory.

Ensure that jumper clip is
between the top two pins.

Center cond. to MV+

Braid to MV-

MYW-MD

MA1
MA2

MV+

MV-

+

-

Polarized

PS-18C

MY-2CD*

1A1
1A2

2A1
2A2

*MYW-MD Can also be used with:
MY-1CD
MY-CU
MYW-P1L
MYW-P3L (input only)

B1
B2

+

-

+

-

MYW-MD TERMINAL DEFINITIONS:

MODULATOR:
MA1 2-Wire output to
MA2 MY monitor/adaptor

MV+ Coax input: center cond.
MV- Coax input: Braided shield

+ Positive 18V DC

- Negative
Input signal requirements:

75 ohm, 1V peak-to-peak.
Coax: Solid copper core with copper braid.

DEMODULATOR:
DA1 2-Wire input from
DA2 MY monitor/adaptor

DV+ Coax output: center cond.
DV- Coax output: Braided shield

+ Positive 18V DC

- Negative
Output signal:

75 ohm, 1V peak-to-peak.
Coax: Solid copper core with copper braid.

Pg. 1

MODULATOR

Pg. 2

Master Sentry Intercom and Video System with Standard CCTV Cameras

MY-DC

A1
A2

CCTV Camera

75 Ohm, 1V Peak-to-peak

(Independently powered)

Center cond. to MV+

CCTV Camera

75 Ohm, 1V Peak-to-peak

(Independently powered)

Center cond. to MV+

Braid to MV-

Braid to MV-

MYW-MD

MA1
MA2

MV+

MV-

+

-

MYW-MD

MA1
MA2

MV+

MV-

Polarized

LE-DA*

1
E

-

* Any LE or LS series
door station may be used.

Polarized

MYW-P3L

1A1
1A2

2A1
2A2

DA
DB

E
R

12+

12-

EL2

KA
KB

18+

18-

3A1
3A2

B1
B2
U1
U2

LEF-10C*

10

9
E

R

12+

12-

L

K10

K9

* Any 5 or 10 call LEF
series master can be
used.

Separate video cable from
intercom cable

MYH-CUB*

A1
A2
U1
U2

+

-

JUMPER CLIP: (Located under rubber cover in upper
right corner of the faceplate of the MYW-MD)
Set in Modulator (top) position from factory.

Ensure that jumper clip is
between the top two pins.

System Configurations:

1 Aiphone video door station and 2 CCTV cameras

or

2 Aiphone video door stations and 1 CCTV camera

Optional:

Part #261380 - Video Output connector for MYW-P3L.
(Provides a 1V peak-to-peak video signal output.)

PS-18C

18+

18-

NOTES:

1. In the above system example, the CCTV
cameras are addressed by pressing the
MONITOR button on the MYH-CUB. Press once
to turn on camera 1 (MY-DC), press again to
switch to camera 2 (CCTV #1), pressing
MONITOR a third time will switch to Camera 3
(CCTV #2) and a fourth time turns the monitor
off.

2. The LE-DA will become active by selecting
station #9 on the LEF-10C. Selecting this
station will also activate CCTV camera #2. The
camera will not activate when the LE-DA calls
in.

ONLY WIRING RELATING TO THIS APPLICATION
IS SHOWN HERE. SEE PRODUCT INSTRUCTIONS
FOR COMPLETE WIRING INFORMATION.

+

-

* Use MYH-CU for surface
mount applications.

+

-

DEMODULATOR

Pg. 3

MYW-MD used for VIDEO OUTPUT with Aiphone MY series Video Entry Systems

The picture from the Video Door Station can be seen at standard monitors whenever the Aiphone system
is activated.

MY-DC

A1
A2

MY-1CD

1A1
1A2

Polarized

MYW-MD*

DA1
DA2

DV+

DV-

Center cond. to DV+

Braid to DV-

Coax output to standard video
input. (CCTV monitor, RF
modulator, or into cable
distribution network through a
multiplexer.)

PS-18YC/A

* Used for video OUTPUT with

Red

Blk

+

-

+

-

MY-1CD, MY-CU, MYW­P3CB MYW-P1L, and MYW­P3L.

JUMPER CLIP: (Located under rubber cover in upper
right corner of the faceplate of the MYW-MD)
Move to Demodulator (lower) position.

Ensure that jumper clip is
between the bottom two pins.

DEMODULATOR

MY Video Door Station with Standard Monitor (No audio communication or PanTilt capabilities)

MYW-MD*

DA1
DA2

DV+

DV-

To standard monitor
or monitor input on a

video switcher.

Center cond. to DV+

Braid to DV-

Standard 9"

Monitor

*Any MY
series camera
can be used

MY-DC*

A1
A2

IMPORTANT:

CN2 speaker microphone connector inside
Aiphone Video door station must be
unplugged to prevent the possibility of
feedback.

JUMPER CLIP: (Located under
rubber cover in upper right corner
of the faceplate of the MYW-MD).
Move to Demodulator (lower)
position.

Ensure that jumper clip is
between the bottom two pins.

TO POWER THE CAMERA:
(1) WHEN IN USE

- Install a switch or relay contact in series with the "+" terminal from the power supply (see diagram.)

- Solder a jumper between points labeled AA on the MYW-MD main PC board. (see Illustration)
This allows the camera to be activated manually, or when the relay contact is activated from a separate source.

(2) CONTINUALLY

- Solder a jumper between points labeled AA on the the MYW-MD main PC board. (see Illustration)
This will provide continuous power to the camera, which may cause the camera to be warm.
Note: Continually powered, the overall life of the camera will be reduced and condensation may occur.

PS-18C

+

-

+

-

Solder jumper

wire between two

holes in land

pattern.

AA

Solder side
view of PC
board.

IMPORTANT:

FAX [phone]

E-mail [e-mail]

1198bkjd

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.

Aiphone Communication Systems
1700 130th Ave. N.E.
Bellevue, WA 98005
[phone]

DC resistance: Max, 15Ω per 1000 feet.

Toll Free Technical Support:

1-800-692-0200

FAX: [phone]

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MYW-MD Instr.