Aiphone JM-4MED - Expanding the System

10
Expanding the system
The following are examples of additional connections to expand the system.
■
Extending the distance between the master station and a door station
Connect a door station to the master station via JMW-BA, a long distance adaptor.
PS24
A1
A2
NP
2
1
2
1A1
1A2
2A1
NP
2
B1
B2
A1
VIDEO
INPUT
VIDEO
INPUT
VIDEO
OUTPUT
A2
PA L
OFF
ON
NTSC
Door Station
PA L
NTSC
Door Station
1
2
A1
A2
NP
Coax
2
P
2
P
2
Master station
JM-4MED
Long distance adaptor
JMW-BA
Set this switch to "Door Station"
when using a video door station.
Set this switch to "NTSC" or "PAL"
when using a CCTV camera.
Connecting a third-party CCTV camera and an audio door station in place of
a video door station
or
Video door station
JK-DA
JK-DV
JK-DVF
JM-DVF-L
NOTES
An optional audio door station installed with a CCTV camera provides door call-in, audio monitoring, and
•
communication with visitors.
Video input: 1 Vp-p/75
•
Ω
When a PAL camera is used, the display range gets narrower than the imaging range.
•
Turn on the units in the following order: the CCTV camera, the long distance adaptor, and the master station.
•
If they are turned on in the wrong order, the CCTV camera may not be recognized in the system.
Use a BNC connector 16 mm or less in diameter for connecting to the VIDEO INPUT terminal of JMW-BA.
•
16 mm of less
Audio door station
GT-D
CCTV camera
Audio door station
GT-D
or
When this switch is set to either "NTSC"
or "PAL", the Zoom/Wide and Pan&Tilt
functions are disabled.
Set this switch to "ON" to turn on the
power.