User guide

Overview
DCM-1 User Manual v1.0 11
The simplied block diagram above illustrates the basic
signal architecture of the DCM-1. Only the routing and logic
for one zone output is shown.
The main system and interfacing capabilities of the DCM-1
are listed below:
Music sources and routing
Provision for 8 music sources. Inputs are stereo, line-
level and unbalanced.
Input 8 also available as a balanced input.
Inputs 1 to 4 may be fed from LE-1 or BE-1 input plates
(see above), which have a balanced connection via
dedicated input sockets.
Any music source may be routed to any zone.
Inputs available for selection may be dened, per‑zone.
Microphone Inputs
Provision for 4 ME-1 mic input plates, each of which can
accept 2 microphones.
Each mic input assignable to any zone in any
combination.
Paging mic facilities
RJ45 digital interface for CDPM Series paging
microphones.
Additional balanced input for 3rd.-party paging mic.
Per‑zone contact closure routing for 3rd.‑party mic.
Both CDPM and 3rd.-party systems may be used
together; independent gain controls.
HF/LF EQ adjustment of paging signal.
Paging level independently adjustable per‑zone.
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Zone Outputs
8 balanced line level zone outputs.
Zones 1 & 2 are stereo, 3 to 8 are mono.
Zone Groups
Zones may be assigned in any combination to 4 Groups.
Groups can be enabled/disabled by user as required.
Groups have same source selection functions as zones.
Priority and Logic
Any music source may be assigned as priority line input,
per‑zone/group. If enabled, a signal at the priority input
overrides the source selection in the zone/group.
Priority music source may be a source normally
unavailable to a zone.
One or more priority mic inputs may be similarly
dened; an active mic signal causes the music level to
reduce (“ducking”).
During Paging, music ducking may be triggered by the
paging signal or zone selection; it can also be disabled;
these options are selectable per‑zone/group.
Independently adjustable hold and release times for all
priority types, plus music attenuation (ducking) level for
mic and paging priorities.
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SPE
ZONES 1 AND 2 ARE STEREO
ZONES 3...8 ARE MONO
+
MIC PRIORITY
MICROPHONE INPUTS
EQ
VCA
ATTENUATOR
LINE 8
LINE 7
LINE 6
LINE 5
LINE 4
LINE 3
L
R
LINE 2
LINE 1
EXTENSION PORTS
1
2
3
+
+
LINE 8
BALANCED
R
L
LINE 1
LINE 2
LINE 3
LINE 4
MIC 1
MIC 2
MIC 3
MIC 4
GAIN
SOURCE SELECT LOGIC
CDR-1
CDR-1 PORTS
EQ CONTROL BY CDR-1 IS ONLY
AVAILABLE IN ENGINEER MODE
LINE PRIORITY
LOGIC
GAIN IS APPLIED
ACCORDING TO
SOURCE SELECTED
+
+
EQ
PAGING ACCESS
LOGIC
PAGING
MICROPHONE
INPUT
CDPM IN
CDPM THRU
+
PAGING ACCESS
Z2Z1
Z3
Z4
Z5
Z6
Z7
Z8
0V
+12V
CDR-1
PORT
A
PORT
A
PORT
B
PORT
B
ONLY RIGHT STEREO SIGNAL
SHOWN FOR CLARITY.
ZONES 3...8. SIGNALS ARE SUMMED
TO MONO BEFORE SOURCE SELECT.
1
2
3
1
2
3
1
2
3
System Block Diagram
System Capabilities