Pro-range Multi-zone, Multi-point,
Zone Paging System
These dedicated 5/10-zone self-cancelling
paging points operate exclusively with a
rack-mounting ZRU010 relay interface and
central logic processor for up to 10 zones.
ZRU010 processors can be cascaded to create
larger systems. Up to 8 paging points can be
operated by a single ZRU010.
Whilst most system designers will switch zones of
loudspeakers, the system is sufficiently versatile
to operate between pre-amplifiers, 600
W
signal
sources or with individual zone amplifiers. Each
paging point incorporates audio compression;
an in-built pre-announcement ‘gong’ is a link
selectable option.
Audio and data communication between the
ZRU010 central processor and each paging
point uses standard CAT5 technology and
cabling.
Operations of the ‘Press-to-Talk’ button activate
the zone relays. After release, and on completion
of the page, the system is automatically returned
to default ‘All-Call’ state. The operator does
not have to remember to cancel the zone(s)
selected.
Provision is made to connect a dedicated music
amplifier and a separate paging amplifier. When
a system is configured this way, paging into
individual zones will not disturb the distribution
of music to others. Full specifications and
configuration details are contained in the
product application notes.
Gooseneck Microphones
For many years the speciality of Communication
Technology, the UK-designed range now
comprises dynamic and electret gooseneck
microphones in lengths up to 420mm with or
without XLR terminations and rugged heavy duty
versions for such applications as buses, cranes,
transport termini and supermarket check-outs.
Wall Microphones
The most common of these more specialised
types is the wall plate mounted microphone.
Designed to be flush-mounted into a wall, they
are very useful where a microphone is required at
(for example) a security gate or building entrance
but can also be used in industrial applications
where a heavy duty unit is desirable.
Most (but not all) are intended to be mounted in
a standard twin-gang 25mm deep electrical box
and are weather resistant for use outdoors.
The more robust types are designed to withstand
a high degree of misuse or deliberate vandalism.
This usually includes stainless steel front plates,
microphone grilles and heavy duty PTT switches
as in the Pro-Series.
Store & Forward Microphones
Acoustic feedback (howl round) has always
been an issue with public address systems.
Digital technology has now provided the answer
in ‘store-and-forward’ technology. The idea is
simple; record the message into a digital store
which holds the message until the press-to-talk
switch is released.
As the message is not sent out in real time (i.e.
when the microphone is active), any possibility
of feedback is eliminated.
In addition, the inclusion of a storage facility
opens up other possibilities; these include
message screening and more interestingly, the
prospect of storing announcements that are
required on a regular basis. Up to 3 messages
can be stored with a total capacity of 2 minutes.
Messages are user recordable and can be sent
out manually on demand or on a timed basis, the
interval being set on the microphone. It should
be noted that this type of unit is not suitable
for use as the primary microphone in voice
evacuation systems.
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