Applications; Setting Up And Connecting The Matrix Router; Audio Units With Line Output; Microphones - Monacor ARM-880 Mode D'emploi

3 Applications

The ARM-880 is an audio signal matrix router
which allows to route eight different audio
sources (microphones, MP3 / CD player, tuner,
PC, etc .) to eight PA zones as desired . By inter-
connecting four ARM-880 units the system can
be extended to 32 zones . A power amplifier for
the speakers is required for each zone .
Numerous connections are available for further
functions:
– 2 inputs for the zone paging microphones
ARM-880RC which allow to make announce-
ments only to certain zones or to all zones
– 1 connection for each zone for a wall mod-
ule ARM-880WP... for remote control of the
zone and /or for feeding an audio signal to
the zone
– 1 additional input for each zone for an audio
signal routed to the corresponding zone only
– 1 microphone input whose signal can be
routed to all zones, with priority function
to be activated
– 1 input, e . g . for an emergency signal that
is routed to all zones and interrupts other
signals
– 1 alarm input for each zone to trigger an
alarm signal in the zone
– Connections for a 24 V emergency power
supply unit
4 Setting Up and Connecting
the Matrix Router
The ARM-880 is designed for insertion into a
rack for units with a width of 482 mm (19
but it can also be used as a table-top unit .
For installation into a rack 3 RS (rack spaces)
= 133 mm are required .
Prior to connecting units or changing ex-
isting connections switch off the matrix router
and the units to be connected . All connections
should only be made by qualified personnel .
For easier handling when connecting, the
green screw terminals (19, 22, 29, 30, 36) can
be removed from their plug-in connections .

4.1 Audio units with line output

To be able to route signals of audio units with
line output (e . g . radio, MP3 / CD player, tape
deck, PC) to the PA zones as desired, use the
inputs LINE 1 – 4 (34) and LINE/ MIC 5 – 8 (36) .
RCA jacks are available for the inputs LINE 1 – 4
and screw terminals for the inputs LINE / MIC
5 – 8 . When connecting an audio unit to the
screw terminals, set the corresponding switch
(37) to position LINE .
For routing the signals of an audio unit
exclusively to a certain zone, the additional
screw terminal input (22) can also be used
which is available for each zone .
The screw terminals are designed for bal-
anced signals . For an unbalanced connection
feed the signal to the contact + and connect
the contacts − and GND to the signal ground .
12

4.2 Microphones

When connecting several microphones, these
microphones may receive a different priority,
i . e . an announcement made via a microphone
of high priority may automatically interrupt
an announcement made via a microphone of
lower priority .
Highest priority is given to the zone pag-
ing microphones ARM-880RC which allow to
make announcements in certain zones only
or in all zones . Two zone paging microphones
may be connected to the jacks PAGING MIC 1
and 2 (38) . For this purpose, a network cable
(e . g . Cat 5 cable) with RJ45 plugs is required .
For power supply connect the power supply
unit provided to the jack 24 V⎓ (47) and to a
mains socket (230 V/ 50 Hz) .
Medium priority is given to a microphone
connected to the jack MICROPHONE 1 (40) .
The microphone signal can be routed into the
zones and volume-adjusted by the controls
MIC 1 (6) . For priority of this microphone sig-
nal over the signals of the inputs LINE 1 – 4 (34)
and LINE / MIC 5 – 8 (36), after switching on the
matrix router, press the buttons PRIORITY (10)
of the corresponding zones . The function can
also be activated and deactivated together for
all zones with the button PAGE ALL (18) .
Note: The priority adjustment is not stored when
switching off the matrix router and must be made
again, if required, after switching on the matrix router
again .
Lowest priority is given to microphones con-
nected to the screw terminals of the inputs
LINE / MIC 5 – 8 (36) .
"
), The screw terminals are designed for bal-
anced signals . For an unbalanced connection
feed the signal to the contact + and connect
the contacts − and GND to the signal ground .
If the microphone requires a phantom
power (46 V), set the corresponding switch
(37) to position PHANTOM . For microphones
which do not require any phantom power, set
the switch to position MIC .

4.3 Alarm inputs

For each zone, a contact (1 – 8) for alarm trig-
gering is available at the screw terminal FIRE
ALARM (29) . If this contact is connected to
the contact "G" via a corresponding switch, a
(fire) alarm signal sounds in the zone and the
indication "AL" flashes on the display (3) . If the
wall module ARM-880WP1 or ARM-880WP2
is connected, "Er" is indicated there . Adjust
the alarm volume for all zones with the con-
trol TONE OUTPUT (31) . The alarm signal has
highest priority and interrupts all other signals
in the zone .
Instead of the fire alarm signal a pulsating
signal sound or a rising siren signal may sound .
Connect the contacts ALERT and COMMON
of the terminal EMERGENCY (30) for a pul-
sating signal sound or the contacts EVAC and
COMMON for a rising siren signal .

4.4 Audio signal for all zones

If an (emergency) signal with line level is to be
routed to all zones, feed the signal to the con-
tacts EMC IN and GND of the terminal EMER-
GENCY (30) . As soon as the signal is present
at these contacts, it will be routed to all zones .
Other signals will be interrupted and the indi-
cation "AL" will flash on the displays (3) . The
signal volume for all zones can be adjusted
with the control EMC INPUT (32) .

4.5 Wall modules

Each PA zone can be remote-controlled by
connection of the wall module ARM-880WP1
or ARM-880WP2 . For remote feed-in of an
audio signal into a zone the wall module
ARM-880WP1 or ARM-880WP3 can be used .
Connect the RJ45 jack "Net Interface" on
the rear side of the module via a network cable
(e . g . Cat 5 cable) with RJ45 plugs to the jack
REMOTE WALL CTRL (21) of the correspond ing
zone . The power supply of the wall modules
is made via the matrix router . However, for
cable lengths exceeding 50 m use a power
supply unit (⎓ 24 V, current rating of 500 mA)
to be connected to the contacts 24 V⎓ and
GND of the screw terminal on the rear side of
the module .
Press down the button REMOTE WALL
CTRL (25) for zones a wall module is connected
to . Otherwise the zone cannot be remote-
controlled with the module . For models
ARM-880WP1 and ARM-880WP2, "OF" will
be indicated on the display (63) .
4.6 Power amplifier or
active system
A balanced output signal for each zone is
present at the screw terminals OUTPUT (19) .
In each case connect the input of a power
amplifier for the speakers to this terminal . If
the amplifier is provided with an unbalanced
input only, connect it to the contacts + (signal)
and GND (ground) only . Alternatively, active
speaker systems may be connected to the zone
outputs .
4.7 Extension of the system
to up to 32 zones
If eight PA zones are not sufficient, the system
can be extended to 16, 24 or 32 zones by using
up to three further matrix routers ARM-880 .
Note: Thus, the number of inputs capable of routing
is not increased . Only the signals of the inputs LINE
1 – 4 (34) and LINE / MIC 5 – 8 (36) of the master unit
can be routed as desired to all zones available . How-
ever, the additional inputs (22) for each zone and the
alarm inputs (29) at each ARM-880 can be used . A
wall module may be connected to each further zone .
1) Connect the terminal EXTENSION LINK OUT
(33) of the master unit (at which all signals
to be distributed as desired are present) to
the terminal EXTENSION LINK IN of an addi-
tional matrix router ARM-880 (= slave unit)
via the supplied cable .