PM4/8/12/16 & PM4/8-SA Installation and User Guide v1.1
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Message chimes
Pre-recorded messages may also be preceded by a chime, and the selection of this is
independent of the page chime. Jumper J2 enables or disables the message chime. It
is often considered desirable to precede pre-recorded announcements by a different
chime to spoken announcements, and thus J3 allows the message chime file to be
either
C_1
or
C_2
*.
However, if pre-recorded messages are saved with zone group definitions (necessary
if external message triggering is to be used), any of up to eight** chime files may be
saved with each. Then, whenever a zone group is selected for message broadcast,
the message will always be preceded by a particular chime. As with messages, four
chimes are available in the PM4-SA and eight in the PM8-SA. See “Zone Groups”
on page 33 for details of how to save messages and chimes as part of zone group
definitions.
* File types may be either MP3 or WMA; unless otherwise indicated filenames in the text omit filename
extensions.
** Four chimes max. in PM-SA4
Power-On Non-Volatile Memory (NVM) Reset
An internal non-volatile memory (NVM) stores user settings such as Group
definitions and Zone enabling, so that these are restored automatically in the event
of power loss. The PM may be reset to the factory software defaults (group memory
empty, all zones enabled), by powering the unit on with jumper J7 set to ON. See
“PCB layout diagrams” on page 49 for a diagram showing jumper locations.
Once the reset has been performed, set J7 back to OFF, so that the factory defaults
are not recalled if there is a subsequent power interruption.
Message cancellation - SA models only
Once a message has been initiated by pressing the TALK/SEND button, the message,
together with any pre-announcement chime, will normally be broadcast in full. This
prevents a user from inadvertently cancelling or interrupting the message in some way.
It is possible to enable message cancellation by a user by moving the internal jumper
J23 from its default OFF setting to ON. When this feature is enabled, the CLEAR
button may be pressed at any time during the message or its pre-announcement
chime to immediately terminate the message. See “PCB layout diagrams” on page
49 for a diagram showing jumper locations.
