Product manual

Operating the Model 26
92 025-9158L
Front Panel LEDs
There is a pair of LEDs, one green and one red, associated with each button on the front
panel of a Model 26. These LEDs are used to indicate different unit, station and or button
conditions depending on their states. The LED function is programmed at the factory as
defined by the customer. Each LED can assume one of the following states:
Off On (continuously) Blinking
Thus, a pair of LEDs can represent one of nine different states.
When a button is first pressed the LEDs associated with the button will flash rapidly for
up to 2.5 seconds or until a new status is written to them. The flashing indicates that they
have not received any change of status yet in response to the button press. If it takes
longer than 2.5 seconds for a new status to come back from a Model 6, the flashing stops
and the old status is displayed until the new status arrives. If no rapid flashing occurs and
the LEDs change state when the button is pressed, that indicates the new status arrived
before any rapid flashing could take place. If no rapid flashing occurs and the LEDs
associated with the button do not change states, then the Model 26 either did not detect
the button press or the button is not programmed to do anything.
The discussion of LEDs in the following paragraphs is based on which type of button an
LED is associated with.
UNIT LEDS
Unit LEDs are associated with unit buttons and usually show unit (vehicle) status. The
LED states used to represent the status of individual units are specified by the customer
when the system is ordered. The factory default LED states are shown in the following
table.
Table 3: Default LED States
Unit Status Green LED Red LED
In Quarters Off Off
On Air On Off
Alert On Blink
Responding Off Blink
On Scene Off On
Transporting Blink Off
At Facility On On
Conditional Out of Service Blink On
Out of Service Blink Blink