Atkinson Dynamics AD-27 Specifikace stáhnout pdf (Strana 3)

Additional Model Information

Letter Group Function/Feature

“A” Call button

“C” Master mode

“D” Slave mode

Number Group

“-1” Remote power

“-2” Provisions for external talk/listen switch (Foot pedal ready)

“-3” External call contacts for auxiliary signal

“-4” Extreme temperature use (-50°F to 150°F)

“-6” Designed for use in a zoned system

“-7” Provisions for hand-held noise canceling microphone

“-8” Additional pre-amp for use with remote slave speaker

Miscellaneous

“-M22” Equipped with remote monitor switch

“-M34” Provisions for headset microphone with belt switch

“-M44” Remote speaker volume control

Table 2

MASTER UNITS:

“C” Models default to Master, or speaker, mode. In Master mode, the unit acts as a speaker and

broadcasts audio signals generated elsewhere in the intercom system. Depressing the Talk switch

turns the unit into a microphone and enables the user to broadcast to all other intercoms in the

system. Releasing the switch returns the unit to Master mode. Figure 4 illustrates a Master/Slave

intercom system.

SLAVE UNITS:

“D” Models default to Slave, or microphone, mode. In Slave mode, the unit is designed to serve

as a hands-free microphone with transmission to all Master units in the intercom system. The

Slave unit will act as a speaker and broadcast audio transmissions only when the Talk switch of

any Master unit in the intercom system is depressed. Figure 4 illustrates a Master/ Slave intercom

system.

CALL BUTTON:

“A” Models are equipped with a Call switch. Depressing the call switch transmits an 890Hz tone

to all units in the intercom system.

CAUTION

The call signal is louder than normal voice messages being carried on the line. Do not depress the

call switch while carrying on a conversation with someone on the system. This will subject the

listener to very loud sound levels.

The volume of the call signal is affected by the volume control on the receiving unit, so if volume is

turned all the way down at a receiving station, the call signal will not be heard.

MICROPHONE:

“-7” Hand-Held Noise Cancelling Microphones are recommended for use in environments with

high levels of ambient noise. Keying the microphone overrides the default mode of the intercom

and enables audio transmission to all Master units in the intercom system. Figure 2 illustrates a

common intercom system where hand-held microphones are used.

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Atkinson Dynamics AD-27 Specifikace Strana 3

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