SIGNAL PRIORITIES
Transmitters will transmit either a low or high priority signal
depending on which button is pressed. When the Multiscan System
is programmed for Nursecall duties, a low priority transmission will
display 'Call' and a high priority signal will display 'Emergency'.
In addition, system faults, such as low battery, etc., will adopt a
priority of less than low-priority calls.
RDU SOUNDER SIGNALS
If a high priority signal is received the RDU sounders will emit a
piercing warbling sound, where as a fast pulsing high-frequency
bleep tone will be emitted in response to a low-priority signal. If a
slow pulsing low frequency tone is emitted from the RDU sounder,
this indicates that a system fault has occurred. In all cases, the
audible warning will be accompanied by the red warning lamps
flashing and a description of the call on the RDU display.
CALL(S) QUEUING
The Multiscan system incorporates three different queues: two for
radio transmitter calls and one for system faults. The first two
queues store high-priority calls and low-priority calls and the third
stores system faults. Each queue is capable of storing up to 20 calls
in chronological order. The system will always annunciate higher
priority calls before lower-priority calls, in other words, until all
higher priority calls have been cancelled, the system will not
annunciate lower-priority calls. Whenever a transmitter is activated,
the call joins the bottom of the appropriate queue. If no other calls
are queuing or are of a higher priority, the call will be immediately
annunciated on all RDUs. When a call is cancelled, it is removed
from the appropriate queue. In the unlikely event of a transmitter
activation when the appropriate queue is full, the call will be
ignored by the system.
CALL CANCEL MODE
All Nursecall call point transmitters (and other transmitters
requiring attention at the transmitter location) require to be
cancelled at the transmitter following transmission of either a low
priority or high priority call. Pressing the button at the
remote display unit when this type of transmitter is activated a will
tag the message as 'Accepted'. The system will retain the message on
the appropriate queue until the call has been cancelled at the
transmitter.
If a pendant transmitter (or other transmitters not requiring
attention at the transmitter location) is activated, the call will be
displayed at all RDUs. Pressing the button will cancel the
call and remove it from the system. The time and date that the call
was cancelled is printed on the system printer/computer, (if fitted).
SYSTEM OPERATION
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