Federal Signal AR2000-M Manual De Instalación Y Mantenimiento página 5

1-3. CONTROL CIRCUITRY.
A. Control Circuitry.
The control circuitry in the AR2000-M has a built-
in priority level feature. The local microphone has the
highest priority level when activated. If a preset is initiated
by contact closure, the AR2000-M will grant that preset priority. The Audio Router will store the current selection
first, then activate the preset. Once the contact closure
is removed, the AR2000-M will return the system to the
previous condition. Pressing cancel will deactivate any
currently active selections.
B. All CALL Pushbutton.
The ALL CALL pushbutton switch selects and
connects all zones to the currently selected input source.
Pressing the ALL CALL again returns the system to the
previous condition.
C. CANCEL Pushbutton.
The CANCEL pushbutton when pressed will reset
all the manually activated signaling functions of the
AR2000-M.
D. MONITOR SPKR.
A monitor speaker may be connected to the unit
at this output. Audio to this output will exist during all
conditions except when the microphone is in use. This
prevents any feedback from the microphone.
E. ADDITIONAL ZONES.
An AR2000-Z may be connected to add on
additional 8 zones of control. If desired, up to seven (7)
total AR2000-Z units may be added to provide a total of
64 zones.
F. ADDITIONAL PRESETS.
An AR2000-P may be connected to add on
additional 8 presets of control. If desired, up to seven (7)
total AR2000-P units may be added to provide a total of
64 presets.
1-4. POWER.
WARNING
In order to prevent power to the AR2000-M from
being accidentally turned off, the unit has a power
switch located on the back of the unit. Before
performing any installation or maintenance,
ensure that power is disconnected.
The front panel has a green LED to indicate the
presence of primary power. It also has a red LED to
indicate the presence of secondary power in use. The
AR2000-M can be operated from either a 120VAC,
240VAC or a 24VDC power source. The AC power is
connected via the power cord, which requires manual
switching in order to operate. 24VDC Backup connects
via the rear terminals directly underneath the 4-Amp,
Bussman-type GMT indicating fuse.
If this unit is to be connected to a non-power
limited 24 volt dc supply, the National Electrical
Code (NFPA 70) requires that those leads be
separated from other classes of wiring connected
to this unit.
The AR2000-P and the AR2000-Z obtain power
directly from the AR2000-M.
1-5. AUDIO INPUTS.
Channel A and Channel B inputs are provided in
the back of the unit to couple standard 1 volt audio
signal from a background music source such as a radio
receiver, CD player or a tape player. The inputs can also
be selected to accept a 25Vrms or 70Vrms input source.
The Channel A input is selectable from the front panel by
depressing the Channel A selection button. To select the
Channel B input, depress the Channel B selection button
on the front panel. Only Channel A or Channel B may be
activated at one time. It is not possible to activate both
Channel A and Channel B audio sources simultaneously.
1-6. MICROPHONE INPUT OPTION.
A Federal Signal Model MSB-1 microphone can be
connected directly to the AR2000-M via the modular jack
provided on the front of the unit (highest priority).
1-7. TELEPHONE INPUT OPTION.
A standard telephone line can be connected directly
to the AR2000-M via the modular phone jack provided at
the back of the unit. This allows the user to contact the
AR2000-M via phone, record a message and deliver it to
zones selected by the phone line user.
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WARNING