P/N 3101795-EN
• REV
02
• ISS
11JAN16
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VM
-
REMICA Remote Paging
Microphone Installation Sheet
Description
The VM
-
REMICA provides remote paging capability throughout a
building or campus. Each VM
-
REMICA has two inputs for connecting
other remote microphone units. The paging circuit supports up to
63 interconnected remote paging stations.
Installation
WARNING:
Electrocution hazard. To avoid personal injury or death
from electrocution, remove all sources of power and allow stored
energy to discharge before installing or removing equipment.
Caution:
Circuit boards are sensitive to electrostatic discharge (ESD).
To avoid damage, follow ESD handling procedures.
To install the VM-REMICA:
1
.
Remove the top retainer bracket on the back of
the
inner door on
the VM
-
RLCM remote annunciator
cabinet.
See Figure
1
.
2
.
Loosen the nuts on the bottom retainer bracket.
3
.
Insert the VM
-
REMICA behind
the bottom retainer bracket,
and
then tighten the nuts on the bracket.
4
.
Reattach the top retainer bracket to the inner door
to secure the
top of the VM
-
REMICA.
5
.
Set jumpers JP1 and JP2 as follows:
•
Position A if AUDIO_OUT is connected to an EAEC
•
Position B if AUDIO_OUT is connected to another
VM
-
REMIC
A
Wiring
Wire the VM
-
REMICA as shown in Figure
2
.
Notes
•
All wiring is supervised and power
-
limited.
•
Test
EOL resistors are installed on the remote microphone key
inputs
to prevent trouble signals during installation.
When
connecting field wiring to a next VM
-
REMICA, remove the
resistors
from pins 12 and 13, and 16 and 17
on
TB1.
•
Remote microphones
cannot be cascaded more than six deep on
a single circuit path.
•
Install a
1
.8 kΩ EOLR
when key
in is not used.
Testing
Note:
Additional hardware may be required to adjust the microphone.
To adjust the microphone:
1
.
After the system amplifiers are properly balanced, press the push
-
to
-
talk switch on the microphone. If you get feedback through the
system speakers, adjust the gain on the VM
-
REMICA until the
feedback is eliminated.
See Figure
1
for the location of the gain
adjustment potentiometer.
Specifications
Voltage
21 to 27 VDC
Current
52 mA
Wiring
Type
Audio out
Key out
Resistance
Capacitance
14
to 1
8
AWG (1.0
to
2
.5 mm²) max.,
shielded twisted
-
pair, in conduit
14
to 1
8
AWG (1.0
to
2
.5 mm²) max.,
twisted
-
pair, in conduit
210 Ω max.
1 µF
Audio Output
1 VRMS at 400 to 4,000 Hz
(4 kHz)
Trouble relay
Current
UL rating
1 A at 30 VDC resistive
Common
Operating environment
Temperature
Relative humidity
32 to 120°F (0 to 49°C)
0 to 93% noncondensing
Regulatory information
Environmental
class
UL: Indoor dry
