Dataradio G3 User manual

GeminiG3
Mobile Data Radiomodem
User Manual - Version 3.01
The entire contents of this manual are copyright 2006, 2007,2008 by
DATARADIO Inc.
Copyright DATARADIO Inc.
February 2008
Part no.: 120 20131-301

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Table of Contents
WHAT'S NEW IN THIS VERSION ......................................................................................................................VI
1. PRODUCT OVERVIEW...................................................................................................................................1
1.1 INTENDED AUDIENCE....................................................................................................................................1
1.2 GENERAL DESCRIPTION ................................................................................................................................1
1.2.1 Features...................................................................................................................................................2
1.2.2 Configuration...........................................................................................................................................3
1.3 FACTORY TECHNICAL SUPPORT ....................................................................................................................3
1.4 PRODUCT WARRANTY ..................................................................................................................................3
1.5 REPLACEMENT PARTS...................................................................................................................................4
1.5.1 Factory Repair.........................................................................................................................................4
1.6 UNPACKING ..................................................................................................................................................4
2. INSTALLATION................................................................................................................................................5
2.1 PLANNING THE INSTALLATION ......................................................................................................................5
2.1.1 Overview..................................................................................................................................................5
2.1.2 Location...................................................................................................................................................5
2.1.3 Cable Path...............................................................................................................................................5
2.2 WARNINGS....................................................................................................................................................6
2.2.1 RF Radiation warning .............................................................................................................................6
2.2.2 Interference with vehicular electronics ...................................................................................................6
2.2.3 Secure mounting......................................................................................................................................6
2.2.4 Explosive environments...........................................................................................................................6
2.2.5 Installation in vehicles powered by liquefied gas....................................................................................6
2.3 PHYSICAL UNIT.............................................................................................................................................7
2.3.1 Recommended tools and supplies............................................................................................................7
2.3.2 Physical mounting ...................................................................................................................................7
2.4 ELECTRICAL INSTALLATION..........................................................................................................................8
2.4.1 Electrical requirements ...........................................................................................................................8
2.4.2 Routing of power cable............................................................................................................................9
2.5 ANTENNA....................................................................................................................................................10
2.5.1 Recommended tools and supplies..........................................................................................................10
2.5.2 Planning ................................................................................................................................................11
2.5.3 Antenna Installation ..............................................................................................................................12
2.6. COMPLETING THE PHYSICAL INSTALLATION ...............................................................................................12
2.7. CHECKING OUT NORMAL OPERATION..........................................................................................................12
3. OPERATING DESCRIPTION .......................................................................................................................13
3.1 FRONT &REAR PANELS..............................................................................................................................13
3.2 DTE PORT INTERFACE ................................................................................................................................15
3.2.1 RS-232 Interface Signal Levels..............................................................................................................15
4. OPERATION & CONFIGURATION............................................................................................................16
4.1 BROWSER-BASED INTERFACE .....................................................................................................................16
4.1.1 Interface Setup and Status.....................................................................................................................16
4.2 LAN SETUP ................................................................................................................................................17
4.3 DEFAULT IP SETTINGS ................................................................................................................................17
4.3.1 Ethernet Interface..................................................................................................................................17
4.3.2 RF Interface...........................................................................................................................................17
4.4 IP NETWORK SETTINGS...............................................................................................................................18
4.4.1 IP Network Settings (with Host) ............................................................................................................18
4.4.2 IP Network Settings (with Router).........................................................................................................18

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4.5 LOGIN SCREEN............................................................................................................................................19
4.5.1 Initial Installation Login........................................................................................................................19
4.6 WEB INTERFACE .........................................................................................................................................20
4.6.1 Apply, Cancel, Save Config, and Reset Unit Buttons & Help Icon........................................................20
4.7 IP SETTINGS................................................................................................................................................21
4.7.1 Unit Status .............................................................................................................................................21
4.7.1.1 Unit Status .................................................................................................................................................... 21
4.7.1.2 Radio Info ..................................................................................................................................................... 22
4.7.2 Setup (Basic)..........................................................................................................................................23
4.7.2.1 Setup (Basic) ►General Setup .................................................................................................................... 23
4.7.2.2 Setup (Basic) ►Basic IP Configuration ...................................................................................................... 23
4.7.2.3 Setup (Basic) ►Serial Ports Setup............................................................................................................... 24
4.7.3 Setup (Advanced)...................................................................................................................................25
4.7.3.1 Setup (Advanced) ►LAN (IP) .................................................................................................................... 25
4.7.3.2 Setup (Advanced) ►RF (IP)........................................................................................................................ 26
4.7.3.3 Setup (Advanced) ►RF (Freq.) ►Radio Table Set Up.............................................................................. 27
4.7.3.4 Setup (Advanced) ►Roaming Setup ........................................................................................................... 29
4.7.3.5 Setup (Advanced) ►IP Services.................................................................................................................. 29
4.7.3.5.1 NAT Overview......................................................................................................................................... 31
4.7.3.5.2 SNMP Overview ...................................................................................................................................... 34
4.7.3.6 Setup (Advanced) ►IP addressing .............................................................................................................. 37
4.7.3.6.1 IP Broadcast/Multicast Overview ............................................................................................................ 38
4.7.3.7 Setup (Advanced) ►IP Optimization & Tuning.......................................................................................... 46
4.7.3.8 Setup (Advanced) ►Time Source ............................................................................................................... 47
4.7.3.9 Setup (Advanced) ►Ethernet (PHY)........................................................................................................... 48
4.7.4 GPS........................................................................................................................................................49
4.7.4.1 GPS ►Status ............................................................................................................................................... 49
4.7.4.2 GPS ►Delivery Options.............................................................................................................................. 50
4.7.4.3 GPS ►AAVL ............................................................................................................................................... 52
4.7.5 Security..................................................................................................................................................53
4.7.5.1 Password and Encryption Control................................................................................................................. 53
4.7.6 Statistics.................................................................................................................................................54
4.7.6.1 Statistics ►Interfaces .................................................................................................................................. 54
4.7.7 Maintenance ..........................................................................................................................................55
4.7.7.1 Maintenance ►Ping Test............................................................................................................................. 55
4.7.7.2 Maintenance ►Config Control.................................................................................................................... 56
4.7.7.3 Maintenance ►Package Control.................................................................................................................. 57
4.7.7.4 Maintenance ►RF Tests............................................................................................................................. 58
4.7.8 Feature Options.....................................................................................................................................61
4.7.9 Site Map and Help.................................................................................................................................61
5. MAINTENANCE, TROUBLE-SHOOTING AND TESTING.....................................................................62
5.1 EQUIPMENT REQUIRED ...............................................................................................................................62
5.2 BASIC TESTS ...............................................................................................................................................62
5.3 ADDITIONAL TEST DETAILS .........................................................................................................................64
5.3.1 Carrier Deviations.................................................................................................................................64
5.3.2 GPS Test................................................................................................................................................64
5.4 TROUBLESHOOTING TOOLS.........................................................................................................................65
5.4.1 Network Connectivity.............................................................................................................................65
5.4.2 Configuration Information ....................................................................................................................65
5.4.3 Statistics Information.............................................................................................................................66
5.5 FIRMWARE UPGRADING ..............................................................................................................................66
5.5.1 Procedure ..............................................................................................................................................66
5.5.1.1 File Integrity Failure ..................................................................................................................................... 67
6. SPECIFICATIONS ..........................................................................................................................................68

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FIGURE 1-MOUNTING PLATE AND SLOT DIMENSIONS ....................................................................................................7
FIGURE 2-BRACKET INSTALLATION ..............................................................................................................................8
FIGURE 3–RUBBER GROMMET AND SHOULDER SCREW DETAILS....................................................................................8
FIGURE 4-DC POWER CONNECTOR ...............................................................................................................................9
FIGURE 5-ANTENNA SPACING .....................................................................................................................................11
FIGURE 6-FRONT AND REAR PANELS ...........................................................................................................................13
FIGURE 7-WEB INTERFACE .........................................................................................................................................16
FIGURE 8-IP NETWORK SETTINGS (WITH HOST) .........................................................................................................18
FIGURE 9-IP NETWORK SETTINGS (WITH ROUTER).....................................................................................................18
FIGURE 10 -ENTER NETWORK PASSWORD SCREEN ......................................................................................................19
FIGURE 11 -WEB USER INTERFACE –WELCOME SCREEN............................................................................................19
FIGURE 12- UNIT IDENTIFICATION AND STATUS...........................................................................................................21
FIGURE 13 -MAINTENANCE -RADIO PERSONALITY .....................................................................................................22
FIGURE 14 -GENERAL SETUP .......................................................................................................................................23
FIGURE 15 -SETUP (BASIC)–BASIC IP CONFIGURATION.............................................................................................23
FIGURE 16 -SETUP (BASIC)–SERIAL PORTS SETUP.....................................................................................................24
FIGURE 17 -ADVANCED IP CONFIGURATION -LAN (IP) .............................................................................................25
FIGURE 18 -ADVANCED IP CONFIGURATION -RF (IP).................................................................................................26
FIGURE 19 -RADIO TABLE SET UP...............................................................................................................................27
FIGURE 20 -ROAMING SETUP.......................................................................................................................................29
FIGURE 21 -ADVANCED IP CONFIGURATION –IP SERVICES SETUP .............................................................................29
FIGURE 22 -BASIC NAT OPERATIONS .........................................................................................................................31
FIGURE 23 -NAT ENABLED ON PARAGON3 .................................................................................................................32
FIGURE 24 -PRIVATE TO PUBLIC (EXTERNAL) .............................................................................................................32
FIGURE 25 -PARAGON3-PRIVATE TO PUBLIC NETWORK (RF)....................................................................................32
FIGURE 26 -NAT ENABLED ON GEMINIG3 ..................................................................................................................33
FIGURE 27 -GEMINIG3 -PRIVATE TO PUBLIC NETWORK (RF).....................................................................................33
FIGURE 28 -SNMP: MANAGER/AGENT MODEL.............................................................................................................34
FIGURE 29 -BRANCH OF THE 1234.MIB OID TREE........................................................................................................35
FIGURE 30 –GCU3.MIB TREE........................................................................................................................................36
FIGURE 31 -ADVANCED IP CONFIGURATION –IP ADRESSING MODES..........................................................................37
FIGURE 32 -BROADCAST WINDOW DETAIL .................................................................................................................38
FIGURE 33 -EXAMPLE OF DIRECTED BROADCAST FORWARDING ENABLED ..................................................................39
FIGURE 34 -EXAMPLE OF DIRECTED BROADCAST FORWARDING DISABLED .................................................................40
FIGURE 35 -EXAMPLE OF DIRECTED BROADCAST FORWARDING ENABLED ..................................................................41
FIGURE 36 -EXAMPLE OF LIMITED BROADCAST FORWARDING DISABLED ....................................................................42
FIGURE 37 -REGISTRATION TO MULTICAST GROUP (FIRST STEP) .................................................................................43
FIGURE 38 -RECEPTION OF MULTICAST PACKETS (SECOND STEP) ................................................................................43
FIGURE 39 -TYPICAL E-DBA MULTICAST GROUPS .....................................................................................................44
FIGURE 40 -MULTICAST WINDOW DETAILS (ON THE MOBILE ON THE LEFT AND ON THE BASE ON THE RIGHT) ...........45
FIGURE 41 -TYPICAL E-DBA MULTICAST GROUPS (WITH ADDRESSES) ......................................................................45
FIGURE 42 -ADVANCED IP CONFIGURATION -IP OPTIMIZATION &TUNING -OIP ......................................................46
FIGURE 43 -ADVANCED IP CONFIGURATION -TIME SOURCE ......................................................................................47
FIGURE 44 -ADVANCED IP CONFIGURATION -ETHERNET (PHY) ................................................................................48
FIGURE 45 -GPS -STATUS...........................................................................................................................................49
FIGURE 46 -GPS -DELIVERY OPTIONS (INITIAL SCREEN ON LEFT -SCREEN WITH 2UDP HOSTS ON RIGHT) ...............50
FIGURE 47 -GPS -AAVL ............................................................................................................................................52
FIGURE 48 -SECURITY-PASSWORD AND ENCRYPTION CONTROL ................................................................................53
FIGURE 49 -STATISTICS -INTERFACES .........................................................................................................................54
FIGURE 50 -MAINTENANCE PING TEST .......................................................................................................................55
FIGURE 51 -MAINTENANCE -UNIT CONFIGURATION CONTROL (INITIAL SCREEN).......................................................56
FIGURE 52 -MAINTENANCE –PACKAGE VALIDATION .................................................................................................57
FIGURE 53 -CONTROL -RF TESTS................................................................................................................................58

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FIGURE 54 –FEATURE OPTION ICON ...........................................................................................................................61
FIGURE 55 -HELP ICON ................................................................................................................................................61
FIGURE 56 -SAMPLE FTP PROGRAM ............................................................................................................................67
FIGURE 57 -APPENDIX 1–ALARM FUNCTION,DRY CONTACT CONNECTION ..............................................................71
FIGURE 58 -APPENDIX 1–ALARM FUNCTION,EXTERNAL POWER SUPPLY &PULL-UP RESISTOR...............................71
TABLE 1-ON-AIR DATA SPEEDS &MODULATION ........................................................................................................2
TABLE 2-G3 LEDS INDICATIONS ................................................................................................................................14
TABLE 3-DTE PORT PIN FUNCTIONS............................................................................................................................15
TABLE 4-RS-232 SIGNAL LEVELS ..............................................................................................................................15
TABLE 5-TEST CHECKLIST..........................................................................................................................................63
TABLE 6-CARRIER DEVIATIONS..................................................................................................................................64
APPENDIX 1-"OFFICER REQUIRES ASSISTANCE"ALARM FUNCTION .....................................................................71
APPENDIX 2-"GPS DATA COLLECTION"INSTRUCTIONS........................................................................................72
APPENDIX 3-E-DBA THROUGHPUT/LATENCY MEASUREMENTS METHODS ..........................................................73
APPENDIX 4-TIME SYNCHRONISATION,AND WEB BROWSER CACHE -INSTRUCTIONS ........................................75
APPENDIX 5-ETHERNET CONFIGURATION -RECOMMENDATION ...........................................................................76

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What's New in this version
History
Versions 1.xx applicable to 700 MHz model
Versions 2.xx applicable to UHF/700/800 MHz models
Versions 3.xx applicable to UHF/700/800 MHz and Agile Dual-Band models
************************************************
Version 3.01, February 2008-Applies to E-DBA PROD V2.7_Rxxx
•Introduces Anti-Vibration bracket for all GeminiG3 radiomodem models
•Updates section 2.3.2 and related illustrations
•Updates section 4.7.3.3: Setup (Advanced) ►RF (Freq.) ►Radio Table Set Up
•Updates section 4.7.3.5 Setup (Advanced) ►IP Services
•Adds section 4.7.3.5.2 SNMP Overview
•Updates section 4.7.4.2: GPS Delivery Options
•Updates Figure 7, Figure 11, Figure 12, and Figure 19
•Updates Section 6: Specifications-GeminiG3 and GeminiG3-ADB Rx Sensitivity
•Updates Appendix 1 - "Officer Requires Assistance" alarm function-Operation
Version 3.00, September 2007- Applies to E-DBA PROD V2.6_Rxxx
•Adds GeminiG3 ADB model description and features
•Updates Web interface descriptions and several screen captures
•Updates Section 6, “Specifications”
•Adds UHF 12.5kHz channel specs
Version 2.03, March 2007- Applies to E-DBA PROD V2.2_Rxxx
•Adds Paragon3 radiomodem “Feature Key” optional functionality to
section 1.2.1 and Table 1 - On-Air Data Speeds & Modulation
•Restructures Section 4:Operation & Configuration
•Updates screen captures in Sections:4.7.1.1, 4.7.1.2, 4.7.3.3, and
4.7.7.4
Version 2.02, January 2007
•Supports EDBA v2.1
•Rectifies typo on “About Dataradio” paragraph

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•Rectifies typo on Figure 22 - Basic NAT Operations
•Rectifies caption and adds NPSPAC values to Table 1 - On-Air Data Speeds &
Modulation
•Updates screen capture for Figure 21 - Advanced IP Configuration –
IP Services Setup
•Updates screen capture for Figure 44 - Advanced IP Configuration -
Ethernet (PHY)
•Updates section 4.7.2.3
•Updates section 4.7.3.5
•Updates section 4.7.3.6
•Updates section 4.7.3.9
•Updates section 4.7.7.2
•Updates section 4.7.7.4
•Adds NPSPAC values to Table 6 - Carrier Deviations
•Updates Section 6, Specifications with NPSPAC values
•Adds Appendix 1 - "Officer Requires Assistance" alarm function
•Adds Appendix 2 - "GPS Data Collection" Instructions
•Adds Appendix 3 - E-DBA Throughput/Latency Measurements Methods
•Adds Appendix 4 - Time Synchronisation, and WEB Browser Cache - Instructions
•Adds Appendix 5 - Ethernet Configuration - Recommendation
Version 2.01, October 2006
•Updates Definition pages
•Updates screen capture for Figure 16 - Setup (Basic) – Serial Ports Setup
•Updates Table 5 - Test Checklist
•Adds Table 6 - Carrier Deviations
•Revises RX sensitivity in Section 6 “Specifications”
Version 2.00, September 2006
•Initial release of common version of Dataradio GeminiG3 UHF / 700 /
800 MHz mobile data radiomodem User Manual.
Version 1.01a, April 2006
•Change of descriptive terminology from a specific “type of
connection” and “type of crimping equipment” to “type of connection
present on radiomodem” in the following Sections:
-2.5.1 “Recommended tools and supplies
-2.5.3 “Antenna Installation” steps 3, 4, and 5
-3.1 “Front & Rear Panels” listing
-5.1 “Equipment Required” for Trouble-Shooting and Testing
•Revision of terminology in Section 6 “Specifications” for Re-
ceiver “Sensitivity” entry.

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•Revision of “Feature” list to reflect terminology used in “Speci-
fications” section.
Version 1.00, December 2005
•Initial release of Dataradio GeminiG3 – 700 MHz, User Manual.

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About Dataradio
For over 25 years, Dataradio has been a recognized and innovative supplier of advanced wireless data
products and systems for mission-critical applications. Public safety organizations, utilities, local gov-
ernment, water management, and other critical infrastructure operations depend on Dataradio to ensure
that vital wireless data reaches the people who need it, when they need it most. From mobile data systems
and radio modems, to analog radios and telemetry devices, Dataradio products are found at the heart of
private wireless networks around the world.
www.dataradio.com
Dataradio provides product brochures, case studies, software downloads, and product information on our
website at http://www.dataradio.com
User Manual Statement
Every effort is taken to provide accurate, timely product information in this user manual.
Product updates may result in differences between the information provided herein and the product
shipped. The information in this document is subject to change without notice.
About CalAmp Corp.
CalAmp is a leading provider of wireless equipment, engineering services and software that enable any-
time/anywhere access to critical information, data and entertainment content. With comprehensive capa-
bilities ranging from product design and development through volume production, CalAmp delivers cost-
effective high quality solutions to a broad array of customers and end markets. CalAmp is the leading
supplier of Direct Broadcast Satellite (DBS) outdoor customer premise equipment to the U.S. satellite
television market. The Company also provides wireless connectivity solutions for the telemetry and asset
tracking markets, public safety communications, the healthcare industry, and digital multimedia delivery
applications.
www.CalAmp.com
For additional information, please visit http://www.calamp.com
DATARADIO and VIS are registered trademarks,
GeminiG3, Paragon3, PARALLEL DECODE, and TRUSTED WIRELESS DATA are trademarks of Dataradio Inc

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Definitions
Item Definition
AAVL Autonomous Automatic Vehicle Location. Feature that involves using GPS
(Global Positioning System) signals from the mobile unit by the Host PC.
Access Point Communication hub for users to connect to a LAN.
ADB Agile Dual-Band. Gemini G3 model that allows 700/800MHz automatic band
switching capability during roaming.
AES Advanced Encryption Standard - Uses 128-bit encryption to secure data.
Airlink Physical radio frequency connections used for communication between units and
protocol (see E-DBA)
ARP Address Resolution Protocol – Maps IP address to physical address.
Backbone The part of a network that connects most of the systems and networks together,
and handles the most data.
Bandwidth The transmission capacity of a given device or network.
Base Designates products used as base stations in VIS systems. They currently include
the Paragon family of products up to the Paragon3.
Browser An application program that provides a way to look at and interact with all the in-
formation on the World Wide Web.
BSC Base Station Controller - Links to and controls the radio base station in Paragon3
equipped VIS systems.
Cycle Mark Signal transmitted on an E-DBA network that keeps the network synchronized.
DEV Ports RS-232 serial communications ports of the GeminiG3 wireless radiomodem
DHCP Dynamic Host Configuration Protocol - A networking protocol that allows ad-
ministrators to assign temporary IP addresses to network computers by "leasing"
an IP address to a user for a limited amount of time, instead of assigning perma-
nent IP addresses.
DNS Domain Name System – The on-line distributed database system used to map
human-readable machine names into IP addresses.
Domain A specific name for a network of computers.
Dynamic IP Addr A temporary IP address assigned by a DHCP server.
E-DBA Enhanced Dynamic Bandwidth Allocation – Dataradio proprietary protocol that
schedules all inbound and outbound Airlink traffic to minimize contention.
Feature Key Method used to implement customer’s option(s) selected at the time of radio-
modem purchase (factory-installation) or as add-on (field-installation).
Ethernet IEEE standard network protocol that specifies how data is placed on and re-
trieved from a common transmission medium.
Firewall A configuration of routers and networks placed between an organization’s inter-
nal Internet and a connection to an external Internet to provide security.
Firmware The programming code that runs a networking device.
Fragmentation Breaking of a packet into smaller units when transmitting over a network me-
dium that cannot support the original size of the packet.

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FTP (File Transfer Protocol) - A protocol used to transfer files over a TCP/IP net-
work.
Gateway A device that interconnects two or more networks with different, incompatible
communications protocols and translates among them.
GeminiG3 Third generation of GeminiPD products. Runs up to 128 kb/s in 50 kHz channel.
HDX Half Duplex. Data transmission that can occur in two directions over a single
line, using separate Tx and Rx frequencies, but only one direction at a time.
HTTP HyperText Transport Protocol - The communications protocol used to connect
browsers to servers on the World Wide Web.
IPCONFIG A MS-Windows 2000 and XP utility that displays the IP information for a par-
ticular networking device.
LNK / ACT LED Ethernet connection established / Ethernet activity taking place.
MAC ADDRESS Media Access Control - The unique address that a manufacturer assigns to each
networking interface.
NAT Network Address Translation - NAT technology translates IP addresses of a local
area network to a different IP address for the Internet.
Network A series of computers or devices connected for the purpose of data sharing, stor-
age, and/or transmission between users.
Network speed This is the bit rate on the airlink between units.
Node A network junction or connection point, typically a computer or work station.
OIP Dataradio’s Optimized IP – Compresses TCP and UDP headers, and filters un-
necessary acknowledgments. This makes the most use of the available band-
width.
OTA Over-The-Air - Convention for the transmission and reception of application-
related information in a wireless communications system. E.g.: OTA upgrade.
Palette Synchronization patterns used to identify the speed and coding of packets trans-
mitted over-the-air in E-DBA.
Paragon3 IP-based data radio base station used in mobile networks and designed specifi-
cally to fit the needs of vehicular applications. Runs up to 128 kb/s
Parallel Decode Patented technology used by GeminiG3 and Paragon3 featuring dual receivers
for added data decode sensitivity in multi-path and fading environments. (United
States Patent No: 6,853,694 B1)
Ping Packet Internet Groper - An Internet utility used to determine whether a particu-
lar IP address is online.
PLC Programmable Logic Controller. An user-provided intelligent device that can
make decisions, gather and report information, and control other devices.
PWR / PGM LED Indicates presence of DC power input /
Roaming Movement of a wireless node (GeminiG3) amongst Multiple Access Points
(Paragon3). GeminiG3 supports seamless roaming.
RS-232 Industry–standard interface for data transfer.
Smart Combining Digital processing method used to combine “Spatial Diversity” signals to opti-
mize performance. (See Parallel Decode)
SNMP Simple Network Management Protocol. Provides a means to monitor and control
network devices, and to manage configurations, statistics collection, perform-
ance, and security.

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Spatial Diversity Composite information from independent diversity branches using antennas
spaced apart is used with “Smart Combining” to minimize fading and other unde-
sirable effects of multipath propagation. (See Parallel Decode)
SRRCnFSK Square Root Raised Cosine (n= level) Frequency Shift Keying. Type of fre-
quency modulation of data signals performed by the GeminiG3 radiomodem.
Static IP Address A fixed address assigned to a computer or an interface that is connected to a net-
work.
Static Routing The forwarding of data in a network via a fixed path.
Subnet Mask A bit mask used to select the bits from an IP address that correspond to the sub-
net. Each mask is 32 bits long, with one bits in the portion that identifies a net-
work and zero bits in the portion that identifies a host.
Switch (Ethernet) Computer-networking device that allows sharing a limited number of ports to
connect computing devices to host computers. Replace network hubs.
TCP/IP Transmission Control Protocol/Internet Protocol - A network protocol for trans-
mitting data that requires acknowledgement from the recipient of data sent. Han-
dles retries and flow control.
Telnet A user command and TCP/IP protocol used for accessing remote PCs.
TFTP Trivial File Transfer Protocol - A version of the protocol that has no directory or
password capability. Depends on UDP and is used on local network.
Topology The physical layout of a network.
Transparent A transparent unit transmits all data without regard to special characters, etc.
Tx/Rx LED Airlink data activity
UDP User Datagram Protocol - A network protocol for transmitting data that does not
require acknowledgement from the recipient of the data that is sent.
Upgrade To replace existing software or firmware with a newer version.
URL Universal Resource Locator - The address of a file located on the Internet.
VIS Vehicular Information Solutions. Dataradio’s name for a series of products spe-
cially designed for mobile data.
WINIPCFG A MS-Windows 98 or MS-ME utility that displays the IP information for a par-
ticular networking device.
WLAN Wireless Local Area Network - A group of computers and associated devices that
communicate with each other wirelessly.

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1. PRODUCT OVERVIEW
This document provides the information required for the installation, operation, and verification of the
Dataradio® GeminiG3™ wireless radiomodem.
1.1 Intended Audience
This document is designed for use by engineering design, installation, and maintenance personnel.
1.2 General Description
Available in 700 MHz, 800 MHz, or UHF and in 700-800 MHz Agile Dual-Band (ADB) model, GeminiG3 is
a mobile radiomodem aimed at the public safety and public utility markets. It integrates all the necessary
hardware for data-only vehicular installations up to but not including the laptop PC and its application
software.
Examples of applications are:
1. Database inquiry systems.
Small number of brief messages, (usually 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. Autonomous Automatic Vehicle Location (AAVL).
Using built-in GPS receiver, determines position, speed and direction of fleet members.
The GeminiG3 radiomodem is made-up of:
•A main transceiver
•An auxiliary receiver for Parallel Decode™
•A 10 to 25-Watt adjustable power amplifier (700 MHz), 10 to 35 (800 MHz), 10 to 40 (UHF)
•A Gemini Processor/Modem board with DSP modem
•An integrated OEM 12-channel GPS receiver.

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1.2.1 Features
•ADB model allows 700/800 MHz automatic band and bandwidth switching capability during
roaming.
•Parallel Decode™ (PD) technology featuring dual receivers for added decode sensitivity in multi-
path and fading environments.
•Native IP mobile model having “Stateless Data Compression” and “Protocol Reduction”, that
works with TCP/IP and UDP, uses standard 10/100 BaseT Ethernet RJ-45, and automatic MDIX
to get the most efficient use of user available bandwidth without requiring a dedicated server or
gateway. It acts as a router, interfaces with any Ethernet device or Native TCP/IP application, and
has two RS-232 ports that can be configured as terminal servers. Using an in-car hub or switch
makes adding other peripherals, such as a camera, possible.
•Sophisticated DSP-based modem design provides added system performance, fewer retries and
more effective throughput.
•On-air data speeds and modulation types supported (dependent on “Feature Key” selected1):
Table 1 - On-Air Data Speeds & Modulation
Channel Type
UHF 700 MHz 800 MHz
Modulation
type 25 kHz 12.5 kHz 50 kHz 25 kHz NPSPAC
SRC16FSK 64 kb/s 32 kb/s 128 kb/s 64 kb/s 32kb/s
SRC8FSK 48 kb/s
43.2 kb/s 24 kb/s 96 kb/s 48 kb/s 43.2 kb/s 24kb/s
SRC4FSK 32 kb/s 16 kb/s 64 kb/s 32 kb/s 16kb/s
•Built as a one-piece integrated design in a rugged die-cast aluminum chassis.
•GeminiG3 units automatically adapt to the speed of the base station for maximum network
flexibility.
•Built–in, up to 32 channels, synthesized half-duplex operating transceiver with automatic
channel selection for improved roaming capabilities
•AES 128-bit encryption ensures that both data and network remain secure.
•Internal 12-channel WAAS capable GPS receiver. Out-of-band (OOB) signaling enables
transmission of GPS reports with no effect on system throughput. AAVL enables periodic
OOB reports based on time or distance.
•Embedded Web server provides browser access for status and configuration of network pa-
rameters. Additionally, for ease of maintenance or upgrades, all unit firmware can be re-
programmed over-the-air.
•Diagnostics combined with the Dataradio optional SNMP-based Network Management Sys-
tem (NMS) package, gives network administrators a proactive tool to collect and analyze di-
agnostic information.
1Method used to implement customer’s option(s) selected at the time of radiomodem purchase (factory-installation) or as add-on
(field-installation).

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1.2.2 Configuration
The GeminiG3 product is factory-configured based on each customer network system requirements
and finalized by Dataradio system engineering.
Note:
The department handling field deployment for Dataradio Corporation (Atlanta-based) is re-
ferred to as “System Engineering” while the equivalent department at Dataradio Incorpo-
rated (Montreal-based) is referred to as “System Solutions”. For the purpose of this manual,
and to avoid confusion, we shall use the generic Dataradio system engineering.
Network-specific operating instructions should be prepared by the system administrators in conjunc-
tion with Dataradio system engineering.
Instructions and examples given in this manual are based on GeminiG3 operating software version
2.2x and may not apply to later software versions.
1.3 Factory Technical Support
The Technical Support departments of DATARADIO provide customer assistance on technical prob-
lems and serve as an interface with factory repair facilities. They can be reached in the following
ways:
DATARADIO Inc.
5500 Royalmount Ave, suite 200
Town of Mount Royal
Quebec, Canada H4P 1H7
Technical support hours: Monday to Friday 9:00 AM to 5:00 PM, Eastern Time
phone: [phone]
fax: [phone]
Email address: [email protected]
DATARADIO Corp.
6160 Peachtree Dunwoody RD., suite C-200
Atlanta, Georgia 30328
Technical support hours: Monday to Friday 9:00 AM to 5:00 PM, Eastern Time
phone: [phone]
fax: [phone]
Email address: [email protected]
1.4 Product Warranty
Warranty information may be obtained by contacting your sales representative.

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1.5 Replacement Parts
This product is not field-serviceable, except by the replacement of a complete unit. Specialized equip-
ment and training is required to repair the processor and radio boards.
Contact Technical Support for service information before returning equipment. A Technical Support
representative may suggest a solution eliminating the need to return equipment.
1.5.1 Factory Repair
When returning equipment for repair, you must request an RMA (Returned Material Authorization)
number. The Tech Support representative will ask you several questions to clearly identify the prob-
lem. Please give the representative the name of a contact person, who is familiar with the problem,
should questions arise during servicing of the unit.
Customers are responsible for shipping charges for returned units. Units in warranty will be repaired
free of charge unless there is evidence of abuse or damage beyond the terms of the warranty. Units
out of warranty will be subject to service charges. Information about these charges is available from
Technical Support.
1.6 Unpacking
When ready for installation, carefully unpack your G3 kit (p/n 023 6000-101) shipping carton and
identify each item as listed below:
•One GeminiG3 radiomodem
•Installation mounting bracket
•Power cable – 22 feet (6.7 meters)
•Small parts kit
If damage has occurred to the equipment during shipment, file a claim with the carrier immediately.

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2. Installation
2.1 Planning the Installation
2.1.1 Overview
To ensure trouble-free, efficient installation, start by inspecting the vehicle to determine the optimum po-
sition for GeminiG3 unit and its antennas as well as the routing of all associated cabling and wiring.
2.1.2 Location
Often, installations in cars are done in the trunk, underneath the back window ledge or on the trunk floor.
In vans and small trucks, it is usually done in the back of the vehicle. In large vehicles, it is often done in
the front cabin.
Be sure to place the GeminiG3 unit in such a way that:
•The LEDs can be seen (as an aid in troubleshooting)
•Access to the antenna connectors is possible without removing the unit
•Sufficient air may flow around the unit to provide adequate cooling
The GeminiG3 unit is not fully waterproof, therefore it should be mounted sufficiently away from an
opened trunk lid or opened tailgate, windows or doors to avoid exposure to rain and/or snow. It also
minimizes the chance that material can be accidentally thrown on the unit or of someone bumping against
it.
2.1.3 Cable Path
Try to route the cables away from locations where they would be exposed to heat (exhaust pipes, muf-
flers, tailpipes, etc.), battery acid, sharp edges, mechanical damage or where they would be a nuisance to
automobile mechanics, the driver or the passengers.
Keep wiring away from automotive computer modules, other electronic modules and ignition circuits to
help prevent interference between these components and radio equipment.
Try using existing holes in firewall and trunk wall and the channels above and below or beneath the
doors, channels through doors and window columns that are convenient to run cables and wires.
Whenever possible, install conduit in which to run the cables.

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2.2 Warnings
Before starting installation, review all of the following warnings.
2.2.1 RF Radiation warning
Recommended safety guidelines for the human exposure to radio frequency electromagnetic energy are
contained in the Canadian Safety Code 6 and the Federal Communications Commission (FCC) Bulletin
65. Proper installation of the transceiver antenna of GeminiG3 radiomodem as summarized in section 2.5
will result in user exposure substantially below the recommended limits for the general public.
Qualified personnel must do all antenna installations. See paragraph 2.5.2 for recommended antenna
positioning.
Transmissions when persons or animals outside the vehicle are within two feet of the antenna may result
in radio energy radiation burns or related injuries.
2.2.2 Interference with vehicular electronics
Certain vehicle electronic devices may be prone to malfunction due to lack of protection from radio fre-
quency energy present when transmitting.
It includes, and is not limited to:
•Electronic fuel injection systems
•Electronic anti-skid braking systems
•Electronic cruise control systems
If the installation vehicle contains such equipment, consult the dealer for the make of vehicle and enlist
his aid in determining if such electronic circuits will perform normally when the radio is transmitting.
2.2.3 Secure mounting
For vehicle occupant(s) safety, mount the GeminiG3 radiomodem securely so that the unit will not break
loose in case of an accident or violent maneuvers.
2.2.4 Explosive environments
Operation of vehicular radio transmitters in explosive environments may be hazardous and conventional
safety precautions must prevail. These include and are not limited to:
•Transmitting while fuelling the vehicle. Do not carry fuel containers in the same compartment
as the GeminiG3 unit.
•Dynamite blasting caps may explode when transmitting radio operation takes place within
500 feet. Always obey the “Turn Off Two-Way Radios” signs posted at sites where dynamite
is being used.
If transporting blasting caps, (check applicable local bylaws) be aware to:
a) Carry the blasting caps in an appropriate metal container having a soft cushioning lining.
b) Suppress transmissions whenever the blasting caps container is being loaded or unloaded into
or from the vehicle.
2.2.5 Installation in vehicles powered by liquefied gas.
GeminiG3 radiomodem installations in vehicles powered by liquefied petroleum gas with the LP-gas con-
tainer in the trunk or other sealed-off space within the interior of the vehicle must conform to the National
Fire Protection Association Standard NFPA 58 which requires:
•Space containing radio equipment shall be isolated by a seal from the space containing the
LP-gas container and its fittings.
•Outside filling connections shall be used for the LP-gas container.
The LP-gas container space shall be vented to the outside of the vehicle.

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2.3 Physical Unit
2.3.1 Recommended tools and supplies
•Electric drill for mounting holes
•Hammer and center punch
•Tie-wraps
•Drills and circle cutters as needed according the size of screws (or nuts and bolts) used.
•In-line “Power meter” capable of measuring forward and reflected power at the operating fre-
quency of the radio.
2.3.2 Physical mounting
a) Start by running all the cables (DC power, CAT5 Ethernet and optional PC RS-232 as well as
all antennas cabling) prior to mounting the GeminiG3 unit to assure the feasibility of the
planned cable routing.
b) Be sure to leave sufficient slack in each cable so the GeminiG3 unit may be removed from the
mounting bracket for servicing with the power applied and the antenna attached.
c) GeminiG3 unit is ready for installation.
Cautions:
•When drilling mounting holes, be careful to avoid damaging some vital part of the
vehicle such as fuel tanks, transmission housing etc. Always check how far the
mounting screws extend below the mounting surface prior to installation.
•Use of drill bit stops is highly recommended.
•After drilling, remove all metal shavings before installing screws.
•Do not overtighten self-tapping screws.
1. Once you have found a suitable mounting position for GeminiG3 radiomodem, hold the unit and
the unattached mounting bracket in the proposed mounting position and check that there is clear-
ance behind the unit for the heatsink, cables, etc. Check that the position provides a large enough
flat surface that the bracket will not be distorted when installed.
Figure 1 - Mounting plate and slot dimensions
Exterior Dimensions: 6.3 x 2.5 in. - Slot Dimensions: 1.0 x 0.2 in.

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2. Using the installation bracket as a template, mark the four locations for drilling (see Figure 1).
Again, ensure that drilling at the selected points is safe and will not cause damage.
3. Indent the drilling positions with a center punch.
4. Drill holes sized for the self-tapping screws or for the nuts, bolts and lock washers used.
Caution: Slightly reduce the size of the drilled holes when using self-tapping screws in thin metal.
5. Install the bracket without distorting (see Figure 2).
Figure 2 - Bracket installation
5. Securely mount GeminiG3 unit to the installed bracket using the four supplied metal shoulder
screws as shown in Figure 2 above. Push the screws through the rubber grommet and fasten se-
curely to the unit. Do not over tighten.
Figure 3 – Rubber grommet and shoulder screw details
6. Drill any additional holes as required for routing all cables and fit holes with suitable grommets
or bushings whenever required.
2.4 Electrical installation
2.4.1 Electrical requirements
GeminiG3 radiomodem is designed to operate from a 13.8Vdc nominal car battery (negative ground) and
requires currents up to 12.0A. It will tolerate a supply voltage range of 10.9 volts to 16.3 volts.
In vehicles with a 24 VDC electrical system (mostly in trucks), it is essential to provide a suitably rated
24/12 VDC converter to isolate the unit from the battery and protect it against excessive voltage.
Warnings:
Always disconnect GeminiG3 radiomodem’s DC power lead before connecting a second
battery, using power from another vehicle or power boosting (e.g. when “jump starting” the
vehicle).