b.
Speaker sensitivity:
Minimum 40 dB
2.1.1.2
Intercommunication Amplifier
Intercommunication amplifier shall as a minimum conform to the following
specifications:
a.
Output power:
[2] [_____] watts rms or greater
b.
Total harmonic distortion: Less than 5 percent at rated power
with a load equivalent to one station connected to output terminals
c.
Signal-to-noise ratio:
60 dB or greater at rated output
d.
Frequency response ratio:
Plus or minus 2 dB from 200 Hz to
10,000 Hz
2.1.1.3
Remote Station
[Desk] [surface wall] [recessed wall] [rack]-mounted remote station shall
have [stainless] [anodized aluminum] faceplate with temper proof mounting
screws and [galvanized steel] [aluminum] backbox [with "station call-in"
capabilities]. Remote station shall provide a speaker with a minimum
sensitivity of 40 dB for speakers less than 200 mm 8 inches in diameter and
45 dB for speakers 200 mm 8 inches or greater. Remote station shall have a
call announcement monitor lamp [and recurring momentary tone].
2.1.1.4
All-Call Amplifier
**************************************************************************
NOTE: Include only when it is determined that an
all-call feature is an operational requirement.
**************************************************************************
All-call amplifier shall as a minimum conform to the following
specifications:
a.
Output power:
Minimum of [0.5] [_____] watts for each station
b.
Total harmonic distortion: Less than 5 percent at rated power
with a load equivalent to the quantity of stations connected to it
in all-call mode of operation
c.
Signal-to-noise ratio:
60 dB or greater at rated output
d.
Frequency response ratio:
Plus or minus 2 dB from 200 Hz to
10,000 Hz
][2.1.2
Type 2 System
**************************************************************************
NOTE: Select the appropriate paragraph and its
following subparagraphs for the features desired.
Delete paragraphs describing the features not
required.
**************************************************************************
Provide single conversation path, central control intercommunication system
with a master station, automatic switching equipment, remote stations and
SECTION 16822N
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