CES SUPPORT 407-679-9440 Page
10 MAN78 ©
CES 1998
Display Format
The received mobile identity sequences can be displayed in one of two programmable methods:
When programmed for ‘FIFO’ (first in first out) the oldest sequence is displayed. When the “next call” button is
pressed, the oldest sequence is removed and the next oldest is displayed. In this mode the next call button is used to see
received sequences from the oldest to the newest. If no more calls are in the queue and the next call button is pressed,
the time is displayed. If the queue is full and a new call is received, the currently displayed (and oldest) call is deleted,
the next oldest call is displayed, and the call just decoded is placed at the end of the queue. All calls received are sent to
the parallel and serial port.
When programmed for ‘LIFO’ (last in first out) the most recently received sequence will be displayed. If a new
sequence is received, the previous one will be moved down in the queue and the new one will be displayed. The
next
call
button is used to view received sequences from the newest to the oldest. If the queue is full, a new sequence will not
be queued. All calls received, regardless of the queue condition, are sent to the parallel and serial port.
An external LED is on to indicate when the queue is not empty.
Display Suppress Timer
To further assist the base dispatcher and to prevent the decode and display of sequences received within a short time
period, the ARi-195e has a “suppress timer” feature.
This
sets a time period that begins when a sequence is received, and it disables any other receptions of that exact
sequence until the timer expires. The AR
i
-195e
maintains 20 suppress timers / sequences. If all timers / sequences are
used and another sequence is received, no suppress action will occur for it.
Audio Alerts
Alert tone sequences can be generated for three events, normal call, autocall and emergency tone sequence receptions.
Each of these events has assigned unique alert tones. Call is a 1khz tone with a 240ms on and off period. Autocall is a
400hz tone with a 240ms on and off time. Emergency is an alternating 1khz and 400hz tones at 120ms on and 30ms off
times. Each of the three events can generate a certain number of beeps or continue until the cancel alert button is
pressed, the PTT input becomes active or any button is pressed. The tone being generated relates to the last sequence ID
received, if another call is received before the previous alert is canceled, the old alert tone will be replaced with the new.
If the FIFO buffer is full or the call is suppressed, no tone will be generated.
Alert Relay
In addition to generating an alert tone, the alert relay can be activated with reception of a valid sequence. The relay can
be activated with the alert tone or until the cancel alert button, PTT in is activated or any button is pressed. When set to
“continuous”, the relay is not toggled with alert beeps but becomes active when the call is received and deactivated
when PTT in or cancel alert or any other button is pressed.
When alert tones are actually being generated, the “alert” LED is on and the speaker enable output is active.
Operator Key Action
Three dispatcher keys are provide.
•
Next Call - displays the next call if additional calls are in the memory queue
•
Cancel Alert - cancels the alert tone when a valid sequence is received
•
Speaker on / off - turns the radio speaker on and off
LED Operation
Three LEDS provide operational information to the dispatcher.
•
More Calls - if illuminated indicates that there are more calls in the memory queue
•
Alert On - provides visual indication that a call has been received
