User's Manual

Portable Paging Aid
This is the simplest of the applications of this unit. The operating cycle between charges will
depend upon the duty cycle. However in what we assume will be a standard duty cycle the unit
should operate for seven days or more before needing to be re-charged.
The LCD display located on top of the transmitter will display ‘0’ when in standby mode. Two gray
buttons are located adjacent to the LCD display and these will allow you to scroll up and down
from 1 through to 99. Press the up button and the numbers will increment 1,2,3 and so on. Press
the down button and the numbers will decrease 99,98,97 and so on. Stop at the number desired
which will relate to the pager that you wish to call. If you pass the required number simply press
the other scroll button until the correct number is displayed. You are now ready to call the
selected pager. The front of the transmitter is equipped with two blue keys. Pressing the top blue
key will invoke a transmission with an “A” call type. Pressing the bottom blue button will invoke a
transmission with a “B” call type. Pressing both buttons will invoke a transmission with a “C” call
type. Any transmission will be confirmed by an aerial transmission icon appearing on the LCD
display accompanied by an audible beep. When the unit has completed its transmission it will
return the LCD display to zero. When the display is showing zero the unit is inhibited from
transmission.
Typical applications and duty cycles for this application
This unit would most commonly be used in say a restaurant where the manager or hostess
wanted to call a waiter to clear a table for waiting customers, or to call a waiter to a table to
provide the customer with service. This will obviously mean that certain times of the day the unit
would be used more often than others. It is assumed that a average duty cycle would be
approximately six transmissions per hour. Each transmission would last in the order of 600 milli-
seconds.
Advanced Use as a Lone Worker Panic Call System
This will represent the most advanced use of the equipment and also convey the heaviest duty
cycle. The unit will typically be equipped with an on board motion sensor/accelerometer, a safety
lanyard and an infra-red serial data port. The unit will be worn on a belt or harness and it will be
programmed to provide heart beat transmissions to confirm operation to a central fixed receiver
on the site. They will be monitored by the central receiver but will only present an alarm condition
by their absence. It is intended to provide a monitoring signal to confirm that everything is alright.
The unit can be used to send manual transmissions via the two trigger keys fitted to the front of
the unit. These will typically send a data burst lasting up to 600 milli-seconds and would not
normally be repeated. They would only be sent on as needed basis. Where the unit is required to
send panic alarms this can be achieved in one of three ways.
The unit would be programmed to send a manual panic call by pressing and holding both of the
front trigger keys simultaneously. This would then start a sequence of transmissions that will not
stop until the unit is re-set.
A similar sequence would be triggered in the event that the unit is snatched or torn away from the
operative by separating the safety lanyard from its trigger pin, which is locked into the base of the
transmitter. The curly cord attached to the pin would normally attach to the belt or trouser loop at
the other end by way of a dog clip. In the event that during a physical attack the unit is separated
from its user the sequence is triggered and repeated around the same time frame until manually
reset.