Dataradio Gemini PD Manual de servicio - Página 5
Navegue en línea o descargue pdf Manual de servicio para Radio Modems Dataradio Gemini PD. Dataradio Gemini PD 14 páginas. Mobile radio modem
Imprimir página1. PRODUCT OVERVIEW
This document provides the information
required for the operation and maintenance
of the
Gemini/PD mobile radio-
DATARADIO
modem.
1.1
Intended Audience
This document is designed for use by engi-
neering design, installation, and mainte-
nance personnel.
1.2
General Description
Gemini/PD is a mobile radio-modem aimed
at the public safety and public utility markets
to meet demand for high speed and high
throughput. It integrates all the necessary
hardware for data-only vehicular installations
up to but not including the laptop PC and its
application software. Example of
applications are:
1. Database inquiry systems.
Small number of brief messages, (usu-
ally from the mobile station) with fairly
long responses.
2. Computer-aided dispatch (CAD).
Large number of messages, (usually
from the base station) with very brief
responses.
3. Automatic Vehicle Location (AVL).
Using a GPS receiver, determines posi-
tion, speed and direction of fleet mem-
bers.
The Gemini/PD is made-up of a main
transceiver and a auxiliary receiver for
Parallel Decode (PD), a 40 Watt power
amplifier, a Gemini Control Unit (GCU) with
DSP driven modem and an integrated OEM
GPS receiver.
120 20110-003 PRELIMINARY
Features:
•
Rugged water-proof die-cast aluminum
chassis.
•
Data speeds of 9600 to 19200 b/s
(9600 b/s maximum in half channels)
•
3 available user ports using standard
RS-232 interface
•
Built–in 16-channel synthesized radio
transceiver.
•
Power output of 10W to 40W (software
controlled).
•
Half duplex or simplex operation.
1.3
Configuration
Operating characteristics of the Gemini/PD
are configured by Dataradio System
Engineering for communication protocols
and network settings.
A Radio Service Software (RSS) is provided
for radio/modem maintenance, adjustments
and frequency programming. The RSS is
MSDOS based and will run on any 486 or
higher PC (2 Megabytes memory required).
WARNING: The frequency band 406 to
406.1 MHz is reserved for use by distress
beacons and cannot not be programmed into
the unit.
1
Gemini/PD Technical Manual