SECTION A10.REV

INTERCOMMUNICATION SYSTEM

NOTE: MASTER COPY DATE: MAY 18, 1983

Part 1 -	GENERAL

1)	GENERAL

A.	Provide complete system including:

1.	Remote intercom stations.

2.	Master intercom stations.

3.	Talkback speakers.

2)	OPERATION

A.	Provide selected areas with intercom stations for two way voice communication as shown

NOTE: APPROVAL

B.	Final appearance subject to Architect's approval.

3)	SHOP DRAWINGS

A.	Complete drawings:

1.	Description of operation.

2.	Technical literature.

3.	Data bulletins.

B.	Associated wiring diagrams.

C.	Fully dmensioned housing, mounting drawings, including information on finishes

4)	OPERATING INSTRUCTIONS

A.	Printed and personnel instructions:

1.	For operation and maintenance of each major item and component of intercommunication system

a.	Equipment identified to enable adjustment and service.

b.	Show terminal identification and equipment designation.

Part 2 -	PRODUCTS

1)	MATERIALS

A.	[CONDUIT AND WIRE: IN ACCORDANCE WITH SPECIFICATIONS FOR [ELECTRICAL [PROVISIONS FOR <AMCS

2)	EQUIPMENT

A.	Remote intercom stations:

1.	Capable of communicating with master intercom stations.

2.	Locate as shown:

a.	Flush mounted in areas indicated.

b.	Surface mounted in areas indicated.

c.	Provide required mounting brackets and enclosures.

3.	For outdoor locations:

a.	Provide stainless steel, weather proof backboxes.

b.	Weatherproof speaker/microphone combination with perforated stainless steel grille

c.	Weather proof re-entrant type talk back speakers.

4.	Features:

a.	Requires no manual operation for TALK and LISTEN:

(1)	Minimum pickup radius - 10 ft (3.05mm).

b.	TALK/LISTEN switch.

c.	Call origination switch.

d.	Audible and visual annunciaton of incoming call.

e.	Privacy switch.

f.	Selector switch for each master station.

g.	Minimum output power 5 watts.

h.	Input impedance - 4-5 ohms.

i.	Frequency response 200 to 4000 Hz.

B.	Master intercom stations:

1.	Locate as shown:

a.	Flush mount in areas indicated.

b.	Surface mount in areas indicated.

c.	Provide required mounting brackets and enclosures.

NOTE: SELECT AS APPLICABLE

2.	Locate:

a.	Security Console.

b.	AMCS Console.

c.	Building Managers Office.

3.	Capable of Communicating with:

a.	Master stations.

b.	Remote stations.

c.	Talkback speakers.

4.	Features to operate station selector/annunciator panel:

a.	Selective calling switch for each station.

b.	Incoming and outgoing call volume control.

c.	Talk/listen switch for talkback speakers.

d.	Handset for private conversation.

e.	Speaker/Mic for hands free conversation.

f.	Tone and visual annunciation.

g.	Call hold switch.

h.	Call switch.

i.	Busy station indicator lamp.

NOTE: DELETE IF N.A.

j.	Auxiliary systems switch for:

(1)	Paging amplifier input.

(2)	Audio sensing alarm input.

(3)	Door release for electric door strikes.

5.	Amplifier:

a.	Centrally amplified.

b.	Built-in unit.

c.	Solid state components.

d.	Minimum output 10 watts.

e.	Input sensitivity minimum.

(1)	1 milivolt at 45 dbm balanced input.

(2)	1 volt at high impedance unbalanced input.

f.	Output to:

(1)	600 ohm balanced to paging amplifier.

(2)	45 ohm balanced to intercom.

(3)	25 volt line to talk back speakers.

g.	Distortion: less than 1 percent of full output.

h.	Hum and noise: at least 60 db below at rated output.

i.	Internal control:

(1)	Scan devices volume control.

(2)	High pass filter.

j.	Compressor amplifier section:

(1)	Adjustable treble gain and attack control.

(2)	Compress to maximum of 6 db.

NOTE: APPROVAL

6.	Final appearance and finish subject to Architect's approval.

Part 3 -	EXECUTION

1)	GENERAL

A.	As it is not practical to enumerate in these specifications all details of fittings and accessory equipment required for proper operation of the system herein described, it is understood that they will be supplied by the Contracto without extra compensation

2)	GENERAL EQUIPMENT

A.	Electronic component models must have been commercially available for at least one year prior to bid

3)	INSTALLATION

A.	Provide wiring between master intercom stations and remote intercom stations as shown

B.	Ground outer shield to reject 60 cycle noise.

C.	Provide required power wiring.

D.	Connect to emergency power.

4)	TESTS

A.	In presence of Owner and Engineer:

1.	Each unit tested to verify specified operation and intelligbility of intercom system

2.	Perform low frequency resonance test on each unit.

5)	BASE BID MANUFACTURERS

A.	Altec Lansing

B.	Dukane

C.	Rauland-Borg

D.	Teletalk

E.	Honeywell, Inc.

F.	Johnson Control

G.	Phillips