Aiphone MKW-M User Manual

Video Modulator with Audio Door Station and CCTV Interface

- INSTRUCTIONS -

The MKW-M adaptor converts a standard CCTV camera's signal to a 2-wire signal, compatible with the MK-1GD,
MK-2MCD, and MY series Black & White Video systems. This allows the utilization of a black & white CCTV
camera and a separate audio door station (JA-D)* to be used in place of an MK video door station. A motion
detector or other activation device can be connected to the Sensor input to trigger the system. The CCTV camera
can also be connected to a standard CCTV system for continual viewing and/or recording. The unit is equipped
with a relay output to trigger an external device, such as a DVR or video switcher whenever the audio and video
to the Aiphone monitor is on.

SENSOR RELAY MASTER AUDIO

OUT IN

75 OHM

NC NC NO NO A1 A2 1 2

VIDEO

OFF ON

WIRING DIAGRAM:
MKW-M Modulator for Standard CCTV camera and Audio Only door station

MK or MY Monitor

or Adaptor*

A1
A2

B1
B2

PS-1820UL

+

+

-

Constant video output for
CCTV monitor, DVR, etc.

Normally Open contact for
remote device activation
(i.e. video switcher, DVR, etc.)

*COMPATIBLE MODELS:

MK-1GD

MK-2MCD
MY-CU
MYW-P1L
MYW-P3L
MYW-P10L

-

NOTES:

1. JA-D is the only compatible door
station with this unit.

2. Video Output is optional. If not
used, set 75 Ohm switch to ON
position.

3. SENSOR input can be used
only if there is no JA-D door
station connected. When used,
the camera will turn on when the
sensor device is activated.

JA-D*

(Optional, only if Sensor

input is not used)

1
2

CCTV Camera

75 Ohm, 1V Peak-to-peak
(Independently powered)

Remote Activation*

(Optional, only with no JA-D

installed)

* Signaling device that provides a

Normally Closed momentary

contact.

MKW-M

MASTER

A1
A2

AUDIO

1
2

VIDEO IN

VIDEO OUT

SENSOR

NC
NC

RELAY

NO
NO

When VIDEO OUT is connected, set

75 Ohm switch to OFF position.

AIPHONE

Pg. 1

INTERNAL ADJUSTMENT WHEN JA-D AUDIO DOOR STATION IS INCLUDED:

INSTRUCTIONS:

1. Open unit by removing 5 small
screws and lifting off cover.

2. Locate Jumper labeled JP1 on the
right side of the PC board.

3. Remove the jumper completely, or
move it so it is on just one of the
posts.

4. Replace the cover and the 5
screws.

OPERATIONS

Activation of the camera from a Monitor:

1. The CCTV camera can be viewed on any of the MK monitors in the system by pressing the MONITOR button.
When the video is activated, the audio door station will be activated to transmit audio to the monitor station. To
initiate 2-way audio with the outdoor location, pick up the handset and speak. When the han dset is hung up, audio
and video will turn off.

2. To turn the monitor off, press the MONITOR button again. Otherwise, it will automatically time out after
approximately 2-1/2 minutes.

Activation of a camera by the Audio Door Station:

1. When the call button is pressed on the JA-D door station, the monitor will turn on with the image from the CCTV
camera, and the chime will sound. The monitor and audio will stay on for approximately 45 seconds if not
answered.

2. Pick up the handset to answer, and hang up to conclude. The monitor will turn off when the handset is hung up.

Interfacing Video with Other Systems:

1. VIDEO OUT connection simply passes the composite video signal on to a standard CCTV system, such as a
monitor, input on a switcher, or DVR. This video signal is live as long as the camera is powered. When using this
feature, set the 75 OHM switch to the OFF position.

2. SENSOR input allows a motion detector or other activation device to remotely turn on the camera. Use any device
with a Normally Closed contact. If an audio door station (JA-D) is included, the sensor input cannot be used.

3 RELAY connection provides a normally open contact closure that can be connected to an external system. This

contact will be closed whenever the Aiphone system is turned on. This can be wired into a record input on a DVR or
any other external device that needs to be notified when the video and audio is activated to the Aiphone monitor.

SPECIFICATIONS:

Power: Supplied by main Monitor/Adaptor
Video Input & Output: Composite 1V Peak-to-Peak, NTSC
Connector: BNC
Audio Door input: Use JA-D surface mount door station only
Relay: Normally open output
Wire: 18AWG, 2-conductor, non-shielded, solid

Aiphone wire # 871802
Wiring distance: Max. 330' from MKW-M to MK/MY monitor or MYW adaptor
Dimensions: 1-5/8"H x 7"W x 4"D