1-29
Description
The ZAC-30 may be used as either a
primary or a backup amplifier. Each
ZAC-30 supervises itself only. Up to
four primary ZAC-30s can be backed
up by one ZAC-30. Only the first
primary amplifier that fails is replaced
by the backup amplifier.
If the primary amplifier fails:
The input signal is switched from the
failed amplifier to the backup.
The backup amplifier switches the
audio output to the audio zone
formerly served by the failed
amplifier.
The ZAC-30 occupies one of eleven
subaddresses of the OCC-1.
DMC-1 Digital Message Card
The Digital Message Card provides
digitized voice messages for the EVAC
and ALERT channels in place of tones.
The DMC-1 has a library of factory
recorded phrases which the user may
configure to form messages using the
CSG-M. The user may also record
custom phrases into the DMC-1 using
a microphone or tape recorder.
Up to two primary DMC-1 cards may
be used in an MXLV System. Up to
three additional DMC-1 mirror modules
(DMC-1MRs) may be installed (one
DMC-1 mirror module per one ACM-1
mirror module). DMC-1 and DMC-1MR
cards are installed in the same way.
The DMC-1 continually supervises
itself. In case of a problem, the module
sends a trouble message to the
MMB-1/-2 and a separate backup tone
generator operates in its place.
DMC-1 Digital Message Card
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