Cloud DCM-1 User's Guide Page 28

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DCM-1 User Manual v1.0
Installation
26
3rd.-party Paging systems
The DCM-1 may be integrated with any paging system which
is able to provide a microphone feed and zone selection by
contact closure.
Paging microphone input
A three pin Phoenix-type connector provides an
electronically-balanced input for an external paging
microphone. This should be connected to the external
microphone using good quality low-noise microphone cable,
using the wiring shown below:
12v phantom power is available at the input for microphones
requiring external power (e.g. electret mics). Phantom
power is enabled by the internal jumper J24. The default
setting for this jumper is with phantom power OFF; move
the jumper to the other position to set phantom power ON.
See page 51 for details of jumper locations.
Adjusting paging levels
Separate controls are available at the rear panel for setting
microphone sensitivity and the paging level sent to each
Zone. Full details on adjusting these can be found at page 44.
Paging Access Connector
The Paging Access connector is used to activate the paging
microphone and to select the zone(s) to which it is to be
routed. It performs this function by default, though it can be
re‑dened in the menu system to provide per‑zone control
outputs when used with Cloud CDPM paging microphones
(see page 25). (Should a system require the use of both
CDPM and third-party paging systems, control outputs will
not be available if the connector is to be used in its “input”
mode.)
Zone activation occurs when one of the “zone active” pins
(2 - 9) is shorted to 0v (available on pin 1). Third-party
paging systems providing per‑zone contact‑closure on zone
selection can thus be easily interfaced by wiring the external
unit to the Paging Access connector as shown below:
The pinout is the same as that given in page 25. Multicore
control cable should be used for the interconnection.
Some 3rd.-party paging systems have a single “page-all”
command output, which activates all zones in use. In this
case, use the wiring scheme shown at ii) above.
PAGING ACCESS CONNECTOR
+12v1
0
v
865
4
3
2 7
PAGE ZONE 1
PAGE ZONE 8
PAGE ZONE 7
PAGE ZONE 6
PAGE ZONE 5
PAGE ZONE 4
PAGE ZONE 3
PAGE ZONE 2
3RD-PARTY
PAGING SYSTEM
i) Individual zone paging
PAGING ACCESS CONNECTOR
+
12v
1
0
v
86
5
4
3
2
7
3RD-PARTY
PAGING SYSTEM
ii) Page-All only
1
2
3
:
1 2 3
+
-
+
-
SCN
pin 1 ground
pin 2 hot
pin 3 cold
Balanced mic:
pin 1 ground
pin 2 cold
pin 3 hot
DCM-1 Paging
Microphone input:
Paging mic wiring
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