User guide

DCM-1 User Manual v1.0
Conguration
44
Other DCM-1 adjustments
In addition to the settings and adjustments made via the
menu system, the DCM-1 has a number of adjustments
which are made elsewhere. Most are concerned with paging
and are located on the rear panel; they are intended to be
set at the time of installation and left. All the controls are
recessed trimpot types, and should be turned carefully with
a trimming tool. Attempting to adjust them with an oversize
screwdriver will cause damage.
Paging mic gain
PAGING MICROPHONE INPUT
LF
HF
INPUT IS BALANCED:
GAIN (dB)
PIN 1: GROUND
PIN 2: COLD
PIN 3: HOT
50
10
1 2 3
-
+
-
+
This control sets the sensitivity of the Paging Mic Input, for
3rd.‑party paging systems. The gain range is 10dB to 50dB;
installers should check the mic signal level available from the
paging system, and intially set this control accordingly.
Its setting will affect the paging mic level in all zones being
paged.
CDPM paging microphone gain
CDPM
GAIN (dB)
IN
THRU
-10
+10
This control sets the mic level for a CDPM paging system
interfaced with the DCM-1. Like the Paging mic level (above),
its setting affects all zones being paged, and its adjustment is
made in the same way. The gain range is ±10dB.
Paging mic EQ
PAGING MICROPHONE INPUT
LF
HF
INPUT IS BALANCED:
GAIN (dB)
PIN 1: GROUND
PIN 2: COLD
PIN 3: HOT
50
10
1 2 3
-
+
-
+
HF and LF EQ controls for paging mics are provided. These
may be adjusted to reduce any extraneous noise in the
vicinity of the paging mic, or to compensate for any
undesirable colouration of the mic itself. The controls are
adjacent to the (3rd.-party) Paging Mic Input, but they affect
both microphones connected to the Paging Mic Input and
mic signals from a CDPM connected to the CDPM ports.
The HF control provides up to 10dB cut or boost above
5kHz, and the LF control 10dB cut or boost below 100Hz.
Again, these controls should be adjusted using a test
message, ideally to the zone where the DCM‑1 is installed so
that the effect of the adjustment can be heard by the person
making it.
As the controls affect both the CDPM and 3rd.-party paging
mic inputs, a degree of compromise may be necessary if a
system requires both inputs to be used.
Zone Paging Levels
PAGING LEVEL
ZONE 6
0 10
1 2 3
Each zone output connector has an adjacent preset control
which sets the volume for paging in that Zone. The Paging
Level adjustment for a Zone is completely independent of
the music level adjustment for that Zone, the latter being set
by the user.