Project 25 Trunked Features; Controls And Display; Front Panel Controls - E.F. Johnson Company 5300 Series Operating Manual

1.4 PROJECT 25 TRUNKED FEATURES

•
Up to 256 talk groups programmable (channels
select talk groups)
•
Group and Unit Calls
•
Emergency alarms to alert dispatcher of emergency
conditions
•
Emergency calls for high priority system access
•
Failsoft operation on a predefined conventional
channel if trunked system fails
•
When scanning, priority group calls detected while
listening to other group calls

2.1 FRONT PANEL CONTROLS

On-Off/Volume - Pressing this control turns power on
and off, and rotating it sets the volume level.
Select Switch - Selects zones/channels and is also
used for other functions such as selecting names from
a call list. When selecting zones/channels, a bar above
the zone or channel display (see Figure 2-3) indicates
which is being changed. This bar is switched between
displays by pressing this switch, and zone and chan-
nels are selected by rotating it (see "Zone/Channel
Select" on page 11).
SECTION 2 CONTROLS AND DISPLAY
Six Option
Switches
Display
Multi-function
Indicator
Figure 2-1 Front Panel Controls
•
Priority group calls when listening to other group
calls when scanning
•
Call Alert™ (send and receive pages)
•
Predefined status conditions (up to 8) can be sent to
a dispatcher
•
Dynamic regrouping (dispatcher can automatically
gather users on a channel to receive a message)
•
Roaming
•
DES-OFB and AES encryption is available (AES
encryption available only with ARM code 1.21 or
later).
PTT Switch
On-Off/ Select
Volume Switch
Multi-function Indicator - This is a two-color LED
that indicates the following:
Red (constant) - Transmitter keyed (PTT switch
pressed).
Green (constant) - Busy condition (carrier detected
in receive mode).
NOTE: This indicator is disabled when the Surveil-
lance mode is programmed (see Section 3.15).
Option Switches - Each of the six options switches on
the front panel (including the one located to the left of
7

CONTROLS AND DISPLAY

Microphone
Speaker