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INTRODUCTION
This manual describes how to use the EDACS ORION Mobile Radio. The
ORION is a synthesized, microprocessor-based, high performance mobile
FM radio providing reliable two-way communications in both the Enhanced
Digital Access Communications System (EDACS) trunking environment
and conventional communication systems.
In the EDACS or trunked system mode, the user selects a communications
system and group. In this mode, channel selection is transparent to the user
and is controlled via digital communication with the system controller. This
provides advanced programmable features and fast access to communication
channels.
In the conventional mode, the user selects a channel and directly communi-
cates on that channel. In this mode, a system refers to a set of channels. A
channel is a transmit/receive radio frequency pair.
The exact operation of the radio will depend on the operating mode, the ra-
dio's programming and the particular radio system. Most features described
in this manual may be enabled or disabled through programming. Consult
the system administrator for the particular features that are programmed into
the ORION.
USER INTERFACE
The ORION operating controls are located on the radio's front panel (See
Figures 1 & 2). A keypad, vacuum florescent display for radio status infor-
mation and a microphone jack are on the front panel. The front panel also
provides a rotary SYSTEM/GROUP/CHANNEL knob, POWER ON-
OFF/VOLUME control, a ramp up/ramp down control, Scan add/delete
control, and a SCAN on-off control for scan operation.
The keypad is used for manual number entry for individual calls, access to a
telephone interconnect system and activation of various EDACS or conven-
tional features such as menu selection. Each key has an associated LED for
status indication.
The display has two lines with eight alphanumeric-characters used to show
the operational mode of the radio. There is one LED for indicating transmit-
ter ON and one LED to indicate CHANNEL BUSY located below the
POWER ON-OFF/VOLUME Control.
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