M&S Systems MC350A Instructions d'exploitation télécharger pdf (Page 11)

Chime Connections

Plug in the modular chime plug to the 4-pin connector

labeled as CHIME on the DMC3-4 Master Station (see

Figure 17).

Optional Door Release Connections

Connect the door release wires from each cable to the

terminals marked DOOR RELEASE on the DMC3-4 Master

Station (see Figure 18).

Antenna Connections

The number and style of antenna leads will vary based on

the intercom system being replaced. The DMC3-4 system is

designed to use the existing antenna.

The AM antenna is typically a 25-foot length of wire with an

in-line ferrite ﬁ lter to reduce interference. The FM antenna

is a 25-foot length of twin lead with a “T” shaped wire dipole

at one end that attaches between rafters in the attic (see

Figure 19).

✔ IMPORTANT: Isolate the antenna leads from the intercom station

cables by running them through a separate hole in the ceiling plate

and through the right hole in the top of the wall housing. If grouped

together, the intercom station cables can shield the antenna leads

resulting in poor radio reception. Also keep the antenna leads away

from metal duct work and aluminum backed insulation, which also can

reduce reception.

Follow the steps below to attach a 300 Ohm twin lead

antenna to the DMC3-4.

1. If the antenna has a connector on the end, cut the connector off.

2. Strip the two wire ends.

3. Connect the wire ends to terminals S1 and S2 on the DMC3-4

antenna board.

4. Connect a bare jumper wire (a 22 gauge speaker wire works well)

between terminals S3 and S4 on the DMC3-4 antenna board.

Follow the steps below to attach a separate AM/FM antenna

system with 300 Ohm FM twin lead and orange AM antenna

wire:

1. Connect the FM twin leads to terminals S1 and S2 on the DMC3-4

antenna board.

2. Connect the AM antenna (ORANGE wire) to terminal S4 on the

DMC3-4 antenna board.

3. Terminal S3 is not used in this conﬁ guration.

Follow the steps below to connect a single orange wire

antenna system:

1. Connect the ORANGE wire to either terminal S1 or S2 on the DMC3-4

antenna board.

✔ NOTE: Do not connect the wire to both terminals S1 and S2 doing this

will short out the FM antenna signal.

2. Connect a bare jumper wire (a 22 gauge speaker wire works well)

between terminals S3 and S4 on the DMC3-4 antenna board.

WIRE TO

STATIONS

AM ANTENNA WIRE

FM ANTENNA

DIPOLE

WALL HOUSING

(DMC1HC SHOWN)

AM FERRITE

FILTER

(RECOMMENDED)

CEILING

PLATE

WHEN USING THE

DMC1H HOUSING,

ROUTE CABLES

THE SAME WAY!

Figure 17. Chime Plug Connector

Figure 18. Door Release Connections

Figure 19. AM & FM Antenna Wiring

MODEL RT11

PLUG-IN

TRANSFORMER

2-CONDUCTOR

18 AWG

CABLE

MODEL DRW

ELECTRIC

DOOR STRIKE

REAR OF

DMC3-4 MASTER

DOOR

RELEASE

TERMINALS

PATIO

RM 9

RM 8

RM 7

RM 6

RM 5

RM 4

RM 3

RM 2

RM 1

PATIO

BLACK

WHITE

DOOR

STATION

RED BLACK

RED

BLACK

GREENS

PLUG CHIME

MODULE INTO

4-PIN "CHIME"

CONNECTOR

DMC3-4

CIRCUIT BOARD

1 2 ... 6 7 8 9 10 11 12 13 14 15 16

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M&S Systems MC350A Instructions d'exploitation Page 11

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