Alpha Communications VM25WH Series Handbuch für Installation und Gebrauch

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VM25WH Video Monitor

Station (shown with

HT2006/10 10-Button Handset)

APPLICATION

The VMH25 series video-intercom system allows a

number of VMH25 series inside monitors, with HT2006

series handset stations, to communicate with one or more

door entry stations with (or without) a built-in camera, and

with each other. When used as a door entry video-

intercom system, the VM25WH can view the caller,

speak with the caller, and activate an electric door release

(if required).

PROCEDURE

1. Read installation instructions for each unit to deter-

mine equipment location and installation method.

2. Install housings and wiring.

3. Install equipment.

4. Check wiring and connect. Observe all local

and national electrical codes.

5. Apply power and check system operation.

VM25WH Series (Residential Type)

Video-Intercom Installation and Use

Instructions, used with the NH208TVU

System Intercom Amplifier Unit

HOUSING INSTALLATION AND

EQUIPMENT LOCATION

INSIDE MONITOR+HANDSET STATION(s)

Locate stations where needed at convenient speaking and

viewing height, about 4.5 feet (137 cm) from the finished

floor. Unit can be secured directly to the finished wall

surface or can be mounted over a single gang electrical

'gem' box or single gang electrical plaster ring.

DOOR ENTRY STATION(s)

Locate door entry station(s) at a convenient speaking (and

viewing) location at the building entry location(s). NOTE:

For best picture (video) quality DO NOT POINT

CAMERA INTO DIRECT SUNLIGHT!!!

SYSTEM TRANSFORMER(s)

The SS146 and SS106 system transformers should be

connected to accessible sources of 117 VAC, preferably

within 50' (15 meters) of the VRU system power supply

and NH208TVU amplifier, but no closer than 3 feet (1

meter).

ELECTRIC DOOR OPENER (OPTIONAL)

The DO-001 (or equivalent 16VAC type) electric door

release is installed in the door jamb in place of the regular

door strike plate. It can be electrically operated by the

VM25WH video monitor with HT2006 handset station(s).

WIRING

INSIDE MONITOR+HANDSET STATION(s)

Between HT2006 master handsets, run 5 conductor

#22AWG (common) plus 1-conductor (selective) #22AWG

cable from handset to handset (equal to no. of total

handsets on system). Add 1 additional #22AWG common

wire for any of the following options; 1 wire for each call

button at the door station; 1 wire for each button to be used

for electric door release; 1 wire for each paging zone; etc.

to the central equipment location (where the VRU and

NH208TVU units are found). Run a 6 conductor #22AWG

cable from any of the HT2006 master handsets to the

NH208TVU at the central equipment location. Run 2

conductor #18AWG from each video monitor directly to

the corresponding VRU power supply unit. Cables may be

straight or twisted pair type and may be solid or stranded

conductors. Run an RG59/U coaxial cable as required,

either in a looped fashion (from one monitor to the next) or

AWD068

Rev. 1 (09/01)