CX261 Installation and User Guide v1.5
17
more than 3 seconds between the end of one track and the
start of the next. In such a case, longer restoration times of 6
or 12 seconds may be set to ensure that the CX261 does not
revert back to the selected music source in between tracks.
Restoration time is set by internal jumper J3. Moving the
jumper position on the 3-pin header changes the restoration
time from 3 s to 6 s; removing the jumper altogether sets a
time of 12 s. See “Microphone Over Music Priority” below for
more information.
Note that Music Priority applies to both the main outputs and
the MOH/Auxiliary output.
Microphone Priorities
The microphone inputs on the CX261 may be configured so
that when they are in use, they take priority over the music
programme; additionally, Mic input 1 may be set to take
priority over Mic input 2.
There are two methods of triggering the microphone
priority circuitry: signal detection (AVO) or via the zone
access contacts on the rear panel (ACC). The choice is made
by internal jumpers J11 (Mic input 1) and J12 (Mic input 2);
note the two mic inputs may be set differently if wished.
See page 20 for location of the jumpers.
The factory default is for both mic inputs to be set to AVO
(Automatic Voice-Over). In this mode, the priority circuit is
triggered by the presence of a signal at the microphone input.
The alternative ACC jumper setting triggers the priority by
contact closure when the access contacts are enabled. ACC
priority should only be selected when a suitable paging
microphone is used.
Note that priority detection may be disabled by removing
J11/J12. In this state, the mic channels will still operate
normally, but music programme will remain at full level, and
the two mic inputs will be mixed together if both are active
simultaneously.
Microphone Over Music Priority
The priority circuitry is configured at the factory to mute
the music programme when an announcement is made.
At the completion of the announcement, the music ramps
back up to its original level over a time period of 3, 6 or 12
seconds, according to the setting of J3. The muting action can
be overridden by moving internal jumper J13 from the ON
position to the OFF. See page 20 for location of internal
jumpers.
Mic 1 Over Mic 2 Priority
In installations where both mic inputs are being used, it
is possible for announcements to clash if the mics are
active simultaneously. By default, the CX261 allows both
microphones to access the system simultaneously.
MIC 1
may be given priority over
MIC 2
by moving internal jumper
J10 from the OFF position to the ON. (See page 20 for
location of internal jumpers.) Then, if
MIC 1
is already making
an announcement,
MIC 2
will not be able to access the
system. Also, if
MIC 2
is making an announcement and
MIC 1
then becomes active,
MIC 2
’s announcement will be curtailed
and
MIC 1
’s will take over.
