24 Series Installation and User Guide V1.0
16
Paging control and mic priority
The mic input can be recongured to operate as a paging input
with the 4-way DIP switch [17] below the mic connector. For
normal (non-paging) operation, all four switches should be in
the ‘up’ position.
• SW1 – MIC/PAGE: in the MIC position (switch up), the
mic input operates as a standard microphone input. In the
PG position (switch down), it operates as a typical Cloud
paging input. In Page Mode, the PAGING ACCESS contacts
will need to be shorted in order for the Mic input to become
active.
• SW2 – Z1 PRIORITY: set to ON (switch down) to enable
Mic-over-Music priority in Zone 1. This can be selected in
both Mic Mode and Page Mode, i.e., regardless of the setting
of SW1. In MIC mode the priority trigger is always VOX. i.e.,
the presence of a signal at the mic input will automatically
trigger the priority function. In PAGE mode, priority is
triggered by closure of the PAGING ACCESS contacts for
Zone 1. When active, the Mic-over-Music priority function
will attenuate the level of signals at both LINE and FACILITY
inputs by 25 dB. When triggering is released, the music will
fade up over approximately 3 seconds.
• SW3 – Z2 PRIORITY: this switch performs the same as
function as described for SW2 in Zone 2.
• SW4 – CHIME: 24 Series mixer-ampliers have an internal
pre-announcement chime generator. With SW4 set to ON
(switch down), the chime is triggered by the ACCESS input
when the mic input is in Page Mode (SW1 set to PG), thus
the chime is heard only in the zone selected for paging.
The default setting is OFF. An internal preset-type CHIME
GAIN control is provided to trim the chime level by +/-10
dB. The chime volume in each zone is set by the front panel
MIC LEVEL controls: installers are recommended to initially
adjust these (in conjunction with the rear panel Mic GAIN
control) to suit the paging microphone, and then adjust the
internal CHIME GAIN control as required. See page 25
for the location of the internal control.
Microphone Access Input
The paging access control input is on the 3-pin, 5 mm–
pitch screw-terminal PAGING ACCESS connector [15]. The
PAGING ACCESS input provides compatibility with “contact-
closure” paging microphones, and allows announcements to
be made in either or both zones. In Page Mode (SW1 down),
the mic input is muted as long as the Z1 or Z2 pin of the
access connector is not connected. When the Z1 and/or Z2
pins are connected to the 0V pin, the mic input becomes
active. The internal chime generator will also be activated if
SW4 is set to ON.
In both Mic and Page Modes, the music signal is faded back
up after the announcement is complete over a period of
approx. 3 seconds.
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