Dataradio GeminiG3 User manual

GeminiG3 - 700MHz
Mobile Radiomodem
User Manual
Version 1.01a
The entire contents of this manual are copyright 2006 by DATARADIO Inc.
Copyright DATARADIO Inc.
April, 2006
Part no.: 120 20130-101a

120 20130-101a GeminiG3 – 700MHz User Manual
ii
Table of Contents
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.....................................................................................................................................4
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 of GeminiG3............................................................................................................7
2.4 ELECTRICAL INSTALLATION ............................................................................................................................8
2.4.1 Electrical requirements .........................................................................................................................8
2.4.2 Routing of power cable..........................................................................................................................8
2.5 ANTENNA........................................................................................................................................................9
2.5.1 Recommended tools and supplies..........................................................................................................9
2.5.2 Planning ..............................................................................................................................................10
2.5.3 Antenna Installation ............................................................................................................................11
2.6. COMPLETING THE PHYSICAL INSTALLATION. ............................................................................................11
2.7. CHECKING OUT NORMAL OPERATION........................................................................................................11
3. OPERATING DESCRIPTION .....................................................................................................................12
3.1 FRONT & REAR PANELS................................................................................................................................12
3.2 DTE PORT INTERFACE..................................................................................................................................14
3.2.1 RS-232 Interface Signal Levels............................................................................................................14
4. OPERATION & CONFIGURATION..........................................................................................................15
4.1 BROWSER-BASED SETUP AND STATUS..........................................................................................................15
4.2 DEFAULT IP SETTINGS ..................................................................................................................................15
4.2.1 Ethernet Interface................................................................................................................................15
4.2.2 RF Interface.........................................................................................................................................15
4.3 IP NETWORK SETTINGS.................................................................................................................................16
4.3.1 IP Network Settings (with Host) ..........................................................................................................16
4.3.2 IP Network Settings (with Router).......................................................................................................16
4.4 LAN SETUP...................................................................................................................................................16
4.5 LOGIN SCREEN ..............................................................................................................................................17
4.5.1 Initial Installation Login......................................................................................................................17
4.6 INTERFACE ....................................................................................................................................................18

120 20130-101a GeminiG3 – 700MHz User Manual
iii
4.6.1 Apply, Cancel, Save Config, and Reset Unit Buttons & Help Icon......................................................18
4.7 ADVANCED IP SETTINGS...............................................................................................................................19
4.7.1 Unit Status ...........................................................................................................................................19
Unit Status.......................................................................................................................................................................19
4.7.2 Setup (Basic)........................................................................................................................................20
4.7.2.1 Setup (Basic) ►General .............................................................................................................................20
Setup (Basic) ►IP..........................................................................................................................................................20
4.7.2.3 Setup (Basic) ►Serial Ports Setup..............................................................................................................21
4.7.3 Setup (Advanced).................................................................................................................................22
4.7.3.1 Setup (Advanced) ►LAN (IP) ...................................................................................................................22
4.7.3.2 Setup (Advanced) ►RF (IP).......................................................................................................................23
4.7.3.3 Setup (Advanced) ►RF (Freq.)..................................................................................................................24
4.7.3.4 Setup (Advanced) ►Roaming Setup..........................................................................................................24
4.7.3.5 Setup (Advanced) ►IP Services.................................................................................................................25
4.7.3.6 Setup (Advanced) ►IP addressing.............................................................................................................26
4.7.3.7 Setup (Advanced) ►IP Optimization & Tuning.........................................................................................27
4.7.3.8 Setup (Advanced) ►Time Source ..............................................................................................................28
4.7.3.9 Setup (Advanced) ►Ethernet (PHY)..........................................................................................................29
4.7.4 GPS......................................................................................................................................................30
4.7.4.1 GPS ►Status ..............................................................................................................................................30
4.7.4.2 GPS ►Delivery Options.............................................................................................................................31
4.7.4.3 GPS ►AAVL.............................................................................................................................................32
4.7.5 Security................................................................................................................................................33
4.7.5.1 Pass Control.................................................................................................................................................33
4.7.6 Statistics...............................................................................................................................................34
4.7.6.1 Statistics ►TCP/IP.....................................................................................................................................34
4.7.6.2 Statistics ►AirLink ....................................................................................................................................35
4.7.6.3 Statistics ►Interfaces .................................................................................................................................35
4.7.7 Maintenance ........................................................................................................................................36
4.7.7.1 Maintenance ►FTP Client .........................................................................................................................36
4.7.7.2 Maintenance ►Ping Test............................................................................................................................36
4.7.7.3 Maintenance ►Radio Info..........................................................................................................................37
4.7.7.4 Maintenance ►Config Control...................................................................................................................38
4.7.8 Radio ►RF Test.................................................................................................................................39
4.7.9 Help .....................................................................................................................................................41
5. TROUBLE-SHOOTING AND TESTING ...................................................................................................42
5.1 EQUIPMENT REQUIRED..................................................................................................................................42
5.2 BASIC TESTS .................................................................................................................................................42
5.3 ADDITIONAL TEST DETAILS ...........................................................................................................................44
5.3.1 GPS Test..............................................................................................................................................44
5.4 TROUBLESHOOTING TOOLS ...........................................................................................................................45
5.4.1 Network Connectivity...........................................................................................................................45
5.4.2 Configuration Information ..................................................................................................................45
5.4.3 Statistics Information...........................................................................................................................46
6. SPECIFICATIONS ........................................................................................................................................47
FIGURE 1 - MOUNTING PLATE AND SLOT DIMENSIONS..................................................................................................7
FIGURE 2 - BRACKET INSTALLATION............................................................................................................................8
FIGURE 3 - DC POWER CONNECTOR ............................................................................................................................8
FIGURE 4 - ANTENNA SPACING...................................................................................................................................10
FIGURE 5 - FRONT AND REAR PANELS ........................................................................................................................12
FIGURE 6 - IP NETWORK SETTINGS (WITH HOST) ......................................................................................................16
FIGURE 7 - IP NETWORK SETTINGS (WITH ROUTER)..................................................................................................16
FIGURE 8 - ENTER NETWORK PASSWORD SCREEN......................................................................................................17
FIGURE 9 - WEB USER INTERFACE – WELCOME SCREEN ...........................................................................................17

120 20130-101a GeminiG3 – 700MHz User Manual
iv
FIGURE 10- UNIT IDENTIFICATION AND STATUS.........................................................................................................19
FIGURE 11 - GENERAL SETUP.....................................................................................................................................20
FIGURE 12 - SETUP (BASIC) – BASIC IP CONFIGURATION..........................................................................................20
FIGURE 13 - SETUP (BASIC) – SERIAL PORTS SETUP..................................................................................................21
FIGURE 14 - ADVANCED IP CONFIGURATION - LAN (IP)..........................................................................................22
FIGURE 15 - ADVANCED IP CONFIGURATION - RF (IP)..............................................................................................23
FIGURE 16 - RADIO TABLE SET UP.............................................................................................................................24
FIGURE 17 - ROAMING SETUP ....................................................................................................................................24
FIGURE 18 - ADVANCED IP CONFIGURATION – IP SERVICES SETUP..........................................................................25
FIGURE 19 - ADVANCED IP CONFIGURATION – IP ADRESSING MODES.......................................................................26
FIGURE 20 - ADVANCED IP CONFIGURATION - IP OPTIMIZATION & TUNING - OIP...................................................27
FIGURE 21 - ADVANCED IP CONFIGURATION – TIME SOURCE...................................................................................28
FIGURE 22 - ADVANCED IP CONFIGURATION – ETHERNET (PHY).............................................................................29
FIGURE 23 - GPS – STATUS .......................................................................................................................................30
FIGURE 24 - GPS - DELIVERY OPTIONS (INITIAL SCREEN ON LEFT – SCREEN WITH 2 UDP HOSTS ON RIGHT)...........31
FIGURE 25 - GPS - AAVL.........................................................................................................................................32
FIGURE 26 - SECURITY – PASS CONTROL...................................................................................................................33
FIGURE 27 - STATISTICS – TCP/IP.............................................................................................................................34
FIGURE 28 - AIRLINK STATISTICS...............................................................................................................................35
FIGURE 29 - INTERFACES ...........................................................................................................................................35
FIGURE 30 - MAINTENANCE – FTP CLIENT................................................................................................................36
FIGURE 31 - MAINTENANCE – PING TEST...................................................................................................................36
FIGURE 32 - MAINTENANCE - RADIO PERSONALITY...................................................................................................37
FIGURE 33 - MAINTENANCE - UNIT CONFIGURATION CONTROL (INITIAL SCREEN)....................................................38
FIGURE 34 - CONTROL - RF TESTS.............................................................................................................................39
FIGURE 35 - HELP ICON..............................................................................................................................................41
TABLE 1 - ON-AIR DATA SPEEDS & MODULATION......................................................................................................2
TABLE 2 - G3LEDS INDICATIONS..............................................................................................................................13
TABLE 3 - DTE PORT PIN FUNCTIONS.........................................................................................................................14
TABLE 4 - RS-232 SIGNAL LEVELS............................................................................................................................14
TABLE 5 - TEST CHECKLIST .......................................................................................................................................43

120 20130-101a GeminiG3 – 700MHz User Manual
v
What's New in this version
History:
Version 1.01a, April 2006
• Change of descriptive terminology from a specific “type of con-
nection” 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.
• Revision of “Feature” list to reflect terminology used in “Speci-
fications” section.
Version 1.00, December 2005
• Initial release of GeminiG3 User Manual.

120 20130-101a GeminiG3 – 700MHz User Manual
vi
About Dataradio
Dataradio is a leading designer and manufacturer of advanced wireless data products and systems for mis-
sion critical applications. Our products are found at the heart of mobile data and SCADA networks
around the world.
With over 20 years dedicated to data technology and innovation, Dataradio is the premier source for wire-
less data solutions. Our products include mobile data products, telemetry devices, integrated wireless mo-
dems for fixed point-to-point and point to multi-point applications, and OEMs. Our product line is one of
the broadest in the industry covering the most often-used frequency bands.
www.dataradio.com
Dataradio provides product brochures, case studies software downloads and product information on our
website. 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.
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, private wireless networks, public safety communications and critical infrastructure and
process control applications. For additional information, please visit the Company's website at
www.calamp.com.
DATARADIO, PARALLEL DECODE and VIS are registered trademarks, GeminiG3 and Paragon3 are
trademarks of Dataradio Inc

120 20130-101a GeminiG3 – 700MHz User Manual
vii
Definitions
Item Definition
Access Point Communication hub for users to connect to a LAN.
Airlink Physical radio frequency connections used for communication between units and
protocol (see E-DBA)
AES Advanced Encryption Standard - Uses 128-bit encryption to secure data.
ARP Address Resolution Protocol – Maps IP address to physical address.
AVL Automatic Vehicle Location. Feature that involves using GPS (Global Position-
ing System) signals from the mobile unit by the Host PC.
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.
Color Palette Synchronization patterns used to identify the speed and coding of packets trans-
mitted over-the-air in E-DBA.
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.
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.

120 20130-101a GeminiG3 – 700MHz User Manual
viii
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 50kHz 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.
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)
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)
Static IP Address A fixed address assigned to a computer or an interface that is connected to a net-
work.

120 20130-101a GeminiG3 – 700MHz User Manual
ix
Static Routing Forwarding 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.

120 20130-101a GeminiG3 – 700MHz User Manual
1
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
GeminiG3 – 700MHz is a mobile radiomodem 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, (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. Automatic Vehicle Location (AVL).
Using built-in GPS receiver1, 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
• A Gemini Processor/Modem board with DSP modem
• An integrated OEM 12-channel GPS receiver. 1
1GeminiG3 Lite model is not GPS-equipped

120 20130-101a GeminiG3 – 700MHz User Manual
2
1.2.1 Features
• Native IP mobile operates at 128 Kbps in 50 kHz channels with exceptional adjacent channel pro-
tection. 96 and 64 Kbps rates are built-in for lower density areas. Uses 700MHz / 50kHz land
mobile channels in the bands of operation:
766-773 MHz TX (under FCC part 90) and 762-764 MHz TX (under FCC part 27)
Table 1 - On-Air Data Speeds & Modulation
Channel spacing
Modulation type 50 kHz
SRC16FSK 128 kb/s
SRC8FSK 96 kb/s
SRC4FSK 64 kb/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.
• Parallel Decode™ (PD) technology featuring dual receivers results in added decode sensitivity in
multi-path and fading environments.
• The next generation high efficiency E-DBA Airlink protocol assures users of data throughput of
up to 64 kilobits per second; enough to support video from a patrol car.
• Sophisticated DSP-based modem design provides added system performance, fewer retries and
more effective throughput.
• Stateless Data Compression and Protocol Reduction works with TCP/IP and UDP to get the most
efficient use of user available bandwidth without requiring a dedicated server or gateway.
• AES 128-bit encryption ensures that both data and network remain secure.
• Built–in, up to 32 channels, synthesized half-duplex operating transceiver with automatic channel
selection for improved roaming capabilities.
• Internal 12-channel WAAS capable GPS receiver. Out-of-band (OOB) signaling enables trans-
mission of GPS reports with no effect on system throughput. AAVL enables periodic OOB re-
ports based on time or distance.
• Using standard 10/100 BaseT Ethernet RJ-45 automatic MDIX, the Gemini3 unit acts as router
and interfaces with any Ethernet device and IP v4 application. Using an in-car hub or switch
makes adding other peripherals, such as a camera, possible.
• The two RS-232 ports can be configured as terminal servers.
• Embedded Web server provides browser access for status and configuration of network parame-
ters. Additionally, for ease of maintenance or upgrades, all unit firmware can be re-programmed
over-the-air.
• With optional NMS package, gives network administrators a proactive tool to collect and analyze
diagnostic information.

120 20130-101a GeminiG3 – 700MHz User Manual
3
1.2.2 Configuration
The GeminiG3 product is factory-configured based on each customer network system requirements, usu-
ally by Dataradio system engineering.
Note: The department handling field deployment for Dataradio Corporation (Atlanta-based) is referred
to as “System Engineering” while the equivalent department at Dataradio Incorporated (Mont-
real-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 conjunction
with Dataradio system engineering.
Instructions and examples given in this manual are based on GeminiG3 radiomodem operating software
version 1.xx and may not apply to earlier or later software versions.
1.3 Factory Technical Support
The Technical Support departments of Dataradio provide customer assistance on technical problems 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]

120 20130-101a GeminiG3 – 700MHz User Manual
4
1.4 Product Warranty
Warranty information may be obtained by contacting your sales representative.
1.5 Replacement Parts
This product is not field-serviceable, except by the replacement of a complete unit. Specialized equipment
and training is required to repair the processor and radio boards.
Contact Technical Support for service information before returning equipment. A Technical Support rep-
resentative 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) num-
ber. The Tech Support representative will ask you several questions to clearly identify the problem.
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 war-
ranty will be subject to service charges. Information about these charges is available from Technical Sup-
port.
1.6 Unpacking
When ready for installation, carefully unpack your G3 kit (p/n 023 6000-101) shipping carton and iden-
tify 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.

120 20130-101a GeminiG3 – 700MHz User Manual
5
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 GeminiG3unit 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
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.

120 20130-101a GeminiG3 – 700MHz User Manual
6
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 GeminiG3 unit 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
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:
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.
Check applicable local bylaws.
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.

120 20130-101a GeminiG3 – 700MHz User Manual
7
The LP-gas container space shall be vented to the outside of the vehicle.
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 of GeminiG3
a) Start by running all the cables (DC power, PC – Ethernet or RS-232 - as well as all antennas ca-
bling) prior to mounting GeminiG3 unit to assure the feasibility of the planned cable routing.
b) Be sure to leave sufficient slack in each cable so the GeminiG3 radiomodem 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 vehi-
cle 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 unit, hold the unit and the unat-
tached mounting bracket in the proposed mounting position and check that there is clearance 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
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.
2.5"
6.0"
1.0"
0.2"

120 20130-101a GeminiG3 – 700MHz User Manual
8
Figure 2 - Bracket installation
5. Install the bracket without distorting
6. Securely mount GeminiG3 radiomodemto the installed bracket using the four supplied 8x40 black
machine screws.
7. 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 GeminiG3radiomodem’s DC power lead before connecting a second battery,
using power from another vehicle or power boosting (e.g. when “jump starting” the vehicle).
2.4.2 Routing of power cable
1. Start by disconnecting the vehicle’s battery unless specifically prohibited from doing so by the
customer, vehicle manufacturer, agent or supplier.
Note:
In this event, exercise extreme caution throughout the installation and fit the fuse only
when the installation is complete.
2. The 22 feet (6.7 meters) long power cable consists of three wires attached to a Packard Electric
“Weather-Pack” connector (DC power Connector, see Figure 3).
Figure 3 - DC Power Connector
The DC Power connector has:
• At position “A”, the smaller red switch-sense wire (commonly to ignition)
• At position “B”, the blue ground wire
• At position “C”, a larger red B+ DC power wire (MUST be unswitched)
A
B
C
IGNITION
(
Small red wire
)
GROUND
(Blue wire)
13.8VDC B+
(Fused Red wire) SEAL
(DO NOT REMOVE)

120 20130-101a GeminiG3 – 700MHz User Manual
9
3. Place this connector at GeminiG3 radio power input location. Do not connect at this time. See para-
graph 2.6, “Completing the physical installation”.
4. Carefully route both the B and the C wires to where the in-line fuse holder will be installed, usually as
close to the vehicle’s battery as practicable. Ensure that leads do not chafe on any metal part(s). Se-
cure the wires at several locations along their length.
Caution:
Use proper crimping tool. Common pliers are NOT acceptable.
Warning:
The DC Power lead must be unswitched
5. Insert the negative (blue) lead into one of the appropriate connector lug and crimp solidly to force the
metal contacts onto the wires.
6. Repeat the step above for connecting the red DC power lead.
7. Attach the positive lead at the battery positive terminal. Attach the negative wire at the vehicle end of
the battery ground cable.
If the negative cable is connected directly to the battery negative terminal, it should
be fused in case of failure of the vehicle’s ground cable.
Ensure tight and secure connections.
8. Fasten the fuse holder and leads.
9. Carefully route the “A” wire to where the connection will be made for switch sensing.
• Connect to “Ignition” if you wish to have GeminiG3 unit turning ON and OFF dependent on the
vehicle’s ignition key.
• Connect to “Accessory” if you wish GeminiG3 unit to be available when the engine is not run-
ning, but still dependent on the ignition key.
• Connect to a user-supplied control switch.
• In installations equipped with a “ChargeGuard”, connect to the controlled-side of the Char-
geGuard (remembering that the DC Power lead must NOT be switched).
10. Make appropriate connections.
Cautions:
Where scraping to bare metal was required, and at the battery posts where wire ends and lugs
may be exposed, apply anti-corrosion compound.
Insert the fuse only when installation is complete and ready to test.
11. At the GeminiG3 radiomodem’s position, neatly coil cable slack and attach securely.
2.5 Antenna
The main transmitter antenna must be vehicle-mounted to provide a separation distance of 50 cm or more
from all persons and the antenna gain must not exceed 5dBi (with a 1.6dB cable loss).
2.5.1 Recommended tools and supplies
• Circle cutter, hole saw or socket punch for antenna
• Appropriate crimping tool for type of connection present on radiomodem unit.

120 20130-101a GeminiG3 – 700MHz User Manual
10
2.5.2 Planning
Referring to Figure 4, G3 commonly uses three separate antennas:
• “T” - Main transceiver -
Constraints are the limit of 50 cm (see section 2.5 above) and omni-directional factors
• “R” - Auxiliary receiver –
Constraints are the receiver spacing of at least 5/8 λ(wavelength) from transceiver antenna and omni-
directional requirements
• “G” - Global Positioning System (GPS) 1
Constraints are TX spacing of at least 24-in/60.96 cm from all transmitting antennas and a clear view
of the sky.
Figure 4 - Antenna spacing
For the optimum antenna spacing at the frequency you are using, consult System Engineering.
For installation of ground-plane dependent antennas, the center of the metal surface used for mounting is
preferable for best omni-directional pattern. For ground-plane independent antennas, installation may be
close to the edges of the surface.
Install the antennas in one of the following positions:
• Most preferred for all antennas: centerline of roof. For transmitter antenna, it is the ONLY acceptable
position.
• Less preferred for receiver antenna: trunk lid, providing distance to transmitting antenna is respected
whether lid is opened or closed.
• Much less preferred, but permissible for receiver antenna: left or right rear fenders, just in back of
rear window
• Least preferred, but permissible for receiver antenna: left or right front fenders, ahead of windshield
Proximity to other vehicle-mounted antennas may cause mutual interference especially at higher frequen-
cies.
1The GeminiG3 Lite model has no GPS
G
MPE
≥5/8λ
700MHz: 9.57"/24.3cm
R
T
50cm
19.7in.
≥24in.

120 20130-101a GeminiG3 – 700MHz User Manual
11
2.5.3 Antenna Installation
1. Route good quality 50-ohm coaxial cables (e.g. RG-223) from each of the selected antenna positions
to the position where the GeminiG3 unit is mounted.
2. Terminate the end at each of the antenna positions with the appropriate connector for the antenna
used and make the connection.
3. At the GeminiG3 position, cut the three cables to length and terminate with the appropriate plug. For
the transceiver and the auxiliary cables, use the proper crimp plug for the connections present on the
radiomodem. Crimp using an appropriate crimping tool. For the GPS1, use a SMA connector.
4. Positively identify the transceiver plug and connect to the left rear of GeminiG3 unit.
5. Positively identify the auxiliary receiver plug and connect to the front left of GeminiG3 unit to the
RX position.
6. Connect the SMA connector to the GPS position below the auxiliary connector position.
7. Do not skip this last step, trust us; it is an important one. To complete the installation, tie-wrap to-
gether the auxiliary and the GPS antenna cables at a point about two inches in front of the unit. It will
be much easier hereafter to correctly identify which plug goes where. You DO NOT want to cross the
auxiliary plug with the transceiver plug.
2.6. Completing the physical Installation.
To complete the physical installation and prior to testing GeminiG3 radiomodem:
• Connect DC Power cable’s connector to GeminiG3 unit’s connector until you hear a click as the
two parts snap together.
• Re-check that all other connections are secure (antennas, PC, etc.)
• Switch vehicle ignition ON.
You are now ready to check for normal operation and to run the GeminiG3 Web Interface program for
testing or trouble-shooting
2.7. Checking out Normal operation
Check that the vehicle ignition is ON.
1. Check for proper operation of the GeminiG3 unit LEDs as per Table 2 on page 13.
2. Using an in-line wattmeter, check forward & reverse power to confirm main antenna installation (as
per section 5).
3. Check the RF Data Link with a base station that can be heard (refer to section 5.4.1)
4. If user application and its base station are available, test the installation by going through a normal
sequence of transmitting and receiving messages.
1GeminiG3 Lite is not GPS-equipped