CalAmp Wireless Networks GPD9 Gemini/PD+ User Manual Gemini PD Technical Manual

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Date Submitted	2002-08-19 00:00:00
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Document Title	Gemini/PD Technical Manual
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Document Author:	Michel Martin

GeminiPD+
Mobile Radiomodem
Installation Guide
Version 1.01
PRELIMINARY, For Internal Use Only
The entire contents of this manual and the Radio Installation Software
described in this manual are copyright 2002 by DATARADIO Inc.
Copyright DATARADIO Inc.
August, 2002
Part no.: 120 20120-101Preliminary
Table of Contents
1.
PRODUCT OVERVIEW ...................................................................................................................................5
1.1 INTENDED AUDIENCE ........................................................................................................................................5
1.2 GENERAL DESCRIPTION.....................................................................................................................................5
1.2.1 Features ...................................................................................................................................................5
1.2.2 Configuration...........................................................................................................................................6
1.3 FACTORY TECHNICAL SUPPORT ........................................................................................................................6
1.4 PRODUCT WARRANTY .......................................................................................................................................6
1.5 REPLACEMENT PARTS .......................................................................................................................................6
1.5.1 Factory Repair.........................................................................................................................................6
1.6 UNPACKING.......................................................................................................................................................6
2.
INSTALLATION................................................................................................................................................7
2.1 PLANNING THE INSTALLATION ..........................................................................................................................7
2.1.1 Overview..................................................................................................................................................7
2.1.2 Location ...................................................................................................................................................7
2.1.3 Cable Path ...............................................................................................................................................7
2.2 WARNINGS ........................................................................................................................................................7
2.2.1 RF Radiation warning .............................................................................................................................7
2.2.2 Interference with vehicular electronics ...................................................................................................7
2.2.3 Secure mounting ......................................................................................................................................7
2.2.4 Explosive environments ...........................................................................................................................8
2.2.5 Installation in vehicles powered by liquefied gas. ...................................................................................8
2.3 PHYSICAL UNIT .................................................................................................................................................8
2.3.1 Recommended tools and supplies ............................................................................................................8
2.3.2 Physical mounting of GeminiPD+ ..............................................................................................................8
2.4 ELECTRICAL INSTALLATION ..............................................................................................................................9
2.4.1 Electrical requirements ...........................................................................................................................9
2.4.2 Routing of power cable............................................................................................................................9
2.5 ANTENNA ........................................................................................................................................................11
2.5.1 Recommended tools and supplies ..........................................................................................................11
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 ....................................................................................................................................14
3.2.1 RS-232 Interface Signal Levels..............................................................................................................14
4.
TROUBLE-SHOOTING AND TESTING .....................................................................................................15
4.1 EQUIPMENT REQUIRED ....................................................................................................................................15
4.2 BASIC TESTS ...................................................................................................................................................15
4.3 ADDITIONAL TEST DETAILS .............................................................................................................................18
4.3.1 GPS Test ................................................................................................................................................18
4.3.2 RF Data Link Test..................................................................................................................................18
5.
SPECIFICATIONS ..........................................................................................................................................19
FIGURE 1 - MOUNTING PLATE AND SLOT DIMENSIONS ....................................................................................................9
FIGURE 2 - BRACKET INSTALLATION ..............................................................................................................................9
FIGURE 3 - DC POWER CONNECTOR ............................................................................................................................10
FIGURE 4 - ANTENNA SPACING .....................................................................................................................................11
FIGURE 5 - FRONT AND REAR PANELS ..........................................................................................................................13
TABLE 1 - GEMINIPD+ LEDS INDICATIONS ...................................................................................................................14
TABLE 2 - RS-232 SIGNAL LEVELS ..............................................................................................................................14
TABLE 3 - TESTS, FULL CHANNEL UNITS .....................................................................................................................16
TABLE 4 - TESTS, NPSPAC & HALF CHANNEL UNITS ....................................................................................................17
APPENDIX 1 - "OFFICER REQUIRES ASSISTANCE" ALARM FUNCTION ...........................................................................21
120 20120-101Preliminary
ii
GeminiPD+ Installation Guide
What's New in this version
History
Preliminary Version 1.01, August 2002
•
PD+
Introduction of Gemini in 900 MHz frequency band. Updated the RF
exposure- related paragraphs 2.2.1, 2.5, 2.5.2
Version 1.00, May 2002
•
Introduction of Gemini
120 20120-101Preliminary
PD+
running data rate up to 32kb/s
iii
GeminiPD+ Installation Guide
Definitions
The following terms are used throughout this document.
Item
DCE
DTE
GCU
GeminiPD
GeminiPD+
GeminiPD Lite
HDX
RS-232
WinRIS
Definition
Data Communications Equipment. This designation defines the direction (input
or output) of the various RS-232 interface signals. Modems are always wired as
DCE.
Data Terminal Equipment. This designation defines the direction (input or output) of the various RS-232 interface signals. Most user equipment, as well as
PCs, are wired as DTE.
GeminiPD Control Unit board
High specs mobile radiomodem. Limited to 25.6 kb/s.
PD = Parallel decode
On-air compatible with GeminiPD. Runs up to 32 kb/s
GeminiPD without GPS feature
Half Duplex. A unit that uses separate transmit and receive frequencies, but
which may not transmit and receive simultaneously.
Industry–standard interface for data transfer.
Windows © Radio Installation Software. This software allows basic tests and
unit configuration.
120 20120-101Preliminary
iv
GeminiPD+ Installation Guide
1. PRODUCT OVERVIEW
1.2.1 Features
•
One-piece integrated design in a rugged
die-cast aluminum chassis.
•
Parallel Decode (PD) technology featuring dual receivers for added decode
sensitivity in multi-path and fading environments.
This document is designed for use by engineering design, installation, and maintenance personnel.
•
Sophisticated DSP-based modem design
provides added system performance,
fewer retries and more effective
throughput.
1.2
•
Automatic channel changing for improved roaming capabilities.
•
Built–in, up to 16-channel flash –
EEPROM programmable synthesized
radio transceiver with automatic channel
selection.
•
Models with on-air data speeds and
modulation types as follows:
This document provides the information required for the installation, operation and
verification of the DATARADIO GeminiPD+.
1.1
Intended Audience
General Description
PD+
Gemini 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 receiver, determines
position, speed and direction of fleet
members.
GeminiPD+ is made-up of:
• A main transceiver
• An auxiliary receiver for Parallel Decode
(PD)
• A 40-Watt power amplifier (35-Watt for
800 MHz model, 25W for 900MHz
model),
• A Gemini Control Unit (GCU) with DSP
driven modem
• An optional integrated OEM GPS
receiver.1
The Gemini
PD+
Channel spacing
Modulation
type
DGMSK2
xRC4FSK2
Lite model has no GPS.
120 20120-100Preliminary
9.6 kb/s
NPSPAC
900MHz
9.6 kb/s
8.0 kb/s
8.0 kb/s
19.2 kb/s
16 kb/s
19.2 kb/s
32 kb/s
14.4 kb/s
16 kb/s
25.6 kb/s
12.5 kHz
25 kHz
9.6 kb/s
•
3 available user ports using standard
RS-232 interface via built-in
multiplexer.
•
Half-duplex operation.
•
Out-of-band signaling enables transmission of GPS1 reports with no effect on
system performance.
•
On-air compatible with GeminiPD at all
speeds (except 32 kb/s) and with
MobilPac/R at 9600 b/s and 19200 b/s
(DGFSK)2
•
3 times faster CPU and 4 times more DSP
memory for future speed upgrade
2 Networks must use common modulation, bit
and baud rates
GeminiPD+ Installation Guide
1.2.2 Configuration
1.5
GeminiPD+ is factory configured based on
each customer network system requirements,
usually by Dataradio System Engineering.
Configuration is not changeable in the field
without notifying Dataradio.
1.3
This product is not field serviceable, except
by the replacement of a complete unit. Specialized equipment and training is required
to repair the GCU board and radio modules.
Contact Technical Support for service information before returning equipment. A
Technical Support representative may suggest a solution eliminating the need to return
equipment.
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:
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 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.
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
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.
phone: +1 514 737-0020
fax:
+1 514 737-7883
Email address: support@dataradio.com
or
DATARADIO Corp.
6160 Peachtree Dunwoody RD., suite C-200
Atlanta, Georgia 30328
1.6
Technical support hours: Monday to Friday
8:30 AM to 5:30 PM, Eastern Time
Email address: drctech@dataradio.com
Product Warranty
Warranty information may be obtained by
contacting your sales representative.
120 20120-100Preliminary
Unpacking
When ready for installation, carefully unpack your GeminiPD+ kit (p/n 023 6000-001)
shipping carton and identify each item as
listed below:
• One GeminiPD+
• 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.
phone: 1 770 392-0002
fax:
1 770 392-9199
1.4
Replacement Parts
GeminiPD+ Installation Guide
doors and window columns that are convenient to run cables and wires.
Whenever possible, install conduit in which
to run the cables.
2. Installation
2.1
Planning the Installation
2.1.1 Overview
2.2
To ensure trouble-free, efficient installation,
start by inspecting the vehicle to determine
the optimum position for GeminiPD+ and its
antennas as well as the routing of all associated cabling and wiring.
Before starting installation, review all of the
following warnings.
2.2.1 RF Radiation warning
2.1.2 Location
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 GeminiPD+ as summarized in section 2.5
will result in user exposure substantially
below the recommended limits for the general public.
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 GeminiPD+ unit in such a
way that:
• The LEDs can be seen (as an aid in
troubleshooting)
• Access to the antenna DE-9 connectors
is possible without removing the unit
• Sufficient air may flow around the unit
to provide adequate cooling
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.
GeminiPD+ 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.
2.2.2 Interference with vehicular
electronics
Certain vehicle electronic devices may be
prone to malfunction due to lack of protection from radio frequency energy present
when transmitting.
It includes, and is not limited to:
Electronic fuel injection systems
Electronic anti-skid braking systems
Electronic cruise control systems
2.1.3 Cable Path
Try to route the cables away from locations
where they would be exposed to heat (exhaust pipes, mufflers, 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
120 20120-100Preliminary
Warnings
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
GeminiPD+ securely so that the unit will not
GeminiPD+ Installation Guide
break loose in case of an accident or violent
maneuvers.
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.
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 GeminiPD+.
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.
2.3
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 frequency of the radio.
2.3.2 Physical mounting of
GeminiPD+
Start by running all the cables (DC power,
PC RS-232 as well as all antennas cabling)
prior to mounting GeminiPD+ to assure the
feasibility of the planned cable routing. Be
sure to leave sufficient slack in each cable so
the GeminiPD+ may be removed from the
mounting bracket for servicing with the
power applied and the antenna attached.
GeminiPD+ 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 selftapping screws.
2.2.5 Installation in vehicles
powered by liquefied gas.
GeminiPD+ installations in vehicles powered
by liquefied petroleum gas with the LP-gas
container 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.
120 20120-100Preliminary
Physical Unit
GeminiPD+ Installation Guide
1. Once you have found a suitable mounting position for GeminiPD+, hold the unit
and the unattached 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.
7. Drill any additional holes as required for
routing all cables and fit holes with
suitable grommets or bushings
whenever required.
2.4
2.4.1 Electrical requirements
GeminiPD+ is designed to operate from a
13.8Vdc nominal car battery (negative
ground) and requires currents up to 15.0A. 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.
0.2"
1.0"
2.5"
6.0"
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.
Warnings:
Always disconnect GeminiPD+’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).
Figure 2 - Bracket installation
5. Install the bracket without distorting.
6. Securely mount GeminiPD+ to the installed bracket using the four supplied
8x40 black machine screws.
120 20120-100Preliminary
Electrical installation
GeminiPD+ Installation Guide
The DC Power connector has:
•
•
•
6. Repeat the step above for connecting the
red DC power lead.
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)
13.8VDC B+
(Fused Red wire)
GROUND
(Blue wire)
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.
SEAL
(DO NOT REMOVE)
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 GeminiPD+ turning ON and
OFF dependent on the vehicle’s ignition key.
• Connect to “Accessory” if you wish
GeminiPD+ to be available when the
engine is not running, 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 ChargeGuard
(remembering that the DC Power
lead must NOT be switched).
IGNITION
(Small red wire)
Figure 3 - DC Power Connector
3. Place this connector at GeminiPD+’s radio power input location. Do not connect at this time. See paragraph 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). Secure the wires at several locations along their length.
Caution:
Use proper crimping tool.
Common pliers are NOT
acceptable.
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.
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.
120 20120-100Preliminary
11. At the GeminiPD+ position, neatly coil
cable slack and attach securely.
10
GeminiPD+ Installation Guide
2.5
Antenna
Refer to
Paragraph 2.5
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 5dB.
≥5/8λ
(UHF: 18"/46cm
800MHz: 9"/23cm
900MHz: 8”/21cm)
50cm
19.7in.
2.5.1 Recommended tools and
supplies
•
•
≥24in.
circle cutter, hole saw or socket punch
for antenna
Mini-UHF Crimp tool
2.5.2 Planning
Referring to Figure 4, GeminiPD+ commonly
uses three separate antennas:
• “T” - Main transceiver Constraints are the limit of 50 cm (see
section 2.5 above) and omni-directional
factors
•
Figure 4 - Antenna spacing
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
Note:
Proximity to other vehicle-mounted
antennas may cause mutual interference especially at higher frequencies.
“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)*
Constraints are TX spacing of at least
24-in/60.96 cm from all transmitting
antennas and a clear view of the sky.
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.
PD+
The Gemini
Lite model has no GPS.
120 20120-100Preliminary
11
GeminiPD+ Installation Guide
2.5.3 Antenna Installation
2.6. Completing the physical
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 GeminiPD+ unit is mounted.
To complete the physical installation and
prior to testing GeminiPD+:
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 GeminiPD+ position, cut the three
cables to length and terminate with the
appropriate plug. For the transceiver and
the auxiliary cables, use a Mini-UHF
crimp plug using an appropriate crimping tool. For the GPS, use a SMA connector.
•
Connect DC Power cable’s connector to
GeminiPD+’s 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 Radio Installation
Software (WinRIS) program for testing or
trouble-shooting.
2.7. Checking out Normal
operation
4. Positively identify the transceiver miniUHF plug and connect to the left rear of
GeminiPD+.
Check that the vehicle ignition is ON.
5. Positively identify the auxiliary receiver
mini-UHF plug and connect to the front
left of GeminiPD+ to the RX position.
1. Check for proper operation of the
GeminiPD+’s LEDs as per Table 1 in
section 3.1
6. Connect the SMA connector to the
GPS* position below the auxiliary connector position.
2. Using the WinRIS program and an inline wattmeter, check forward & reverse
power to confirm main antenna installation (as per section 4).
7. Do not skip this last step, trust us; it is
an important one. To complete the installation, tie-wrap together 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 mini-UHF plug
goes where. You DO NOT want to cross
the auxiliary plug with the transceiver
plug.
3. Using WinRIS, check the RF Data Link
with a base station that can be heard (as
per section 4.3.2.
If user application and its base station
are available, test the installation by
going through a normal sequence of
transmitting and receiving messages.
* The GeminiPD+ Lite model has no GPS.
120 20120-100Preliminary
12
GeminiPD+ Installation Guide
3. Operating Description
3.1
Front & Rear Panels
The front panel includes:
•
One mini-UHF type female antenna connector for the auxiliary receiver
•
One SMA type female connector for the GPS receiver (not installed on GeminiPD+ Lite model)
•
Two LED indicators
• Three DE-9F RS232 ports
The rear panel includes:
•
One mini-UHF type female antenna connector for the main transceiver
•
One 3-pin pigtailed DC Power connector with ignition sense
Gemini/PD
RX
PWR
PGM
RX
TX
PC/SETUP
2.000"
®
GPS
DEV-3
DEV-2
DEV-1
6.000"
Figure 5 - Front and rear panels
120 20120-101Preliminary
13
GeminiPD+ Installation Guide
Table 1 - GeminiPD+ LEDs indications
GeminiPD+ LEDs indications
Special
Errors
Normal
Power-on Sequence (LEDs are paired)
PWR
RX / TX
Red
Red
Amber
Off
Indication
Normal boot-up start
(10 to 27 sec.)
Then 8 seconds to
completing boot-up
Normal Operation (LEDs are independent)
PWR
Indication
RX / TX
Green*
Normal ready state
Off
Amber*
1 Pulse/sec.
Sufficient satellites
acquired by GPS
Green
Receiving packets
“DBA sync” allows transmit
Receiving packets
“DBA out-of-sync” prevents
transmit
Green
Off
Normal state
Red
Off
Hardware failure
Amber
Slow
Red/Green
Red
Software failure
(firmware erased)
Red
Fast
Red/Green
Red
Programming in
progress
3.2
No network activity
Transmitting
* For 800MHz model (using 25% duty cycle limit)
PWR lit Green / Flashing Amber = normal indication (GPS 1pulse per
sec.)
PWR lit Amber / Flashing Green = exceeded duty cycle (GPS 1pps)
DTE Port Interface
For all three ports:
DE-9 F
pin #
Indication
We recommend the use of a shielded 9-wire cable with all pins connected. These ports can be
used for unit configuration, maintenance & adjustment as well to connect user applications.
Function
DCD – from GeminiPD+, normally asserted
RXD – data from GeminiPD+
TXD – data to GeminiPD+
DTR – to GeminiPD+, handshaking
Ground
DSR – from GeminiPD+, tied to VCC
through current limiting resistor
RTS - to GeminiPD+, handshaking
CTS – from GeminiPD+, handshaking
AUX - auxiliary input to GeminiPD+,
(for port 2: “Officer requires assistance”
Alarm input)
It may be activated by (normally open) dry
contact pull-up to the port’s DSR output. It
may also tolerate user pull-up to external
+12 VDC (car battery), but an isolated dry
contact is preferred due to the risk of
noise-related false alarms caused by the
vehicle’s electrical system.
A +3 to +12 V signal at this pin will send a
DMP “x” (On) message to the base.
An open or ground signal will send a DMP
“y” (Off) message.
Messages are only sent when a signal
transition occurs.
See Appendix “A” on page 21 for further
details.
120 20120-101Preliminary
3.2.1 RS-232 Interface Signal Levels
In the descriptions of data signals, the following
conventions are used:
Table 2 - RS-232 Signal Levels
Term
OFF
14
Alternates
asserted, spacing
dropped, marking
Signal level
+3 to +15 V
-3 to -15 V
GeminiPD+ Installation Guide
4. Trouble-Shooting and Testing
The checks described below should be done at annual intervals or whenever deterioration in performance
is noted.
4.1
•
•
•
•
•
Equipment Required
13.8 VDC (nominal) car battery, or
13.8 VDC/20A regulated power supply (In the case the unit is not installed in a vehicle)
In-line watt meter (50W range)
Radio service monitor (IFR or equivalent).
Cable with mini-UHF male connector to connect GeminiPD+ to the service monitor.
WinRIS version 3.11 or later*
4.2
Basic Tests
Recommended checks:
1. Transmit and Reverse power output
2. Carrier frequency error
3. Frequency deviation
4. Receivers RSSI Check
5. RF Data Link test between a Gemini and a base station.
6. GPS test (not required on GeminiPD+ Lite model).
Refer to Table 3 and Table 4 for checks 1 to 5.
Refer to paragraph 4.3.1 for check 6.
Important note: Before proceeding make sure that the service monitor has been recently calibrated and
has warmed up for at least the time specified by its manufacturer.
Some reported frequency and deviation problems have actually been erroneous indications from service
monitors that have not adequately warmed up. This is particularly likely when field service is done during
winter months
* To find out how to launch the Windows-based software alignment and system-testing tool WinRIS,
please refer to the readme.txt file on the application’s installation diskette. For functional details of the
numerous buttons and menu-selectable items available, please refer to the program’s context sensitive
help. It is also possible to access the help information via the F1 key.
120 20120-101Preliminary
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GeminiPD+ Installation Guide
Table 3 - Tests, Full Channel Units
STEP
ACTION
CHECKLIST A
EXPECTED RESULTS at
25°C
MEASURE WITH
IF NOT?
GeminiPD+ units are set and characterized at the factory to optimize performances. It is not recommended to try to readjust the units.
Power-up LED Sequence
Connect and save config
as per Table
as per WinRIS Help content
Press WinRIS Get button
Main transceiver Output
Power
Press TX (Unmod)
Main transceiver Reflected
Power
Press TXON (Unmod)
UHF: 40 watts
800MHz: 35 watts
both +10%, -10%
Factory-settable down to 10
watts (5 watts for 800MHz
model) as per customer request
Service monitor
set to read power
< 5% of forward power or as
specified by System Eng.
10W in-line wattmeter
Check for bad connections,
damaged coax cable, etc.
± 300 Hz
Service monitor
set to read frequency error
Refer to factory technical
support.
Carrier Frequency Error
Press TX (Unmod)
1 - GeminiPD+ LEDs indications
TX Deviation (in kHz)
Press
TXON (Modulated)
or
50W in-line wattmeter
Refer to factory technical
support.
Full channel unit
xRC4FSK UHF 800 US 800 CA
32.0 kb/s ±4.3 ±3.6
±3.6 Service monitor set
Carrier will be modulated with a
25.6 kb/s ±4.0 ±3.7
±3.7 to read deviation
1 kHz tone.
DGFSK UHF 800 US 800 CA (IF filter set to Mid
or 30 kHz position)
19.2 kb/s ±4.0 ±4.0
±4.0
9.6 kb/s ±3.0 ±3.0
±3.0
Refer to factory technical
support.
Tolerance is +5%, -10% for all bit rates.
RF Data Link test
Use the addressing function’s
“Send” button to dynamically
test transmissions
Look for
“Delivery confirmed” on the
WinRIS Status bar.
Refer to section
4.3.2 and to WinRIS Help content.
Check on the WinRIS RSSI bar
graph if the base station is within
range (i.e. better than -107dBm)
or
Refer to factory technical support.
Set the service monitor to generate at the unit antenna jack the RF levels mentioned below. The carrier generated
should be modulated with a 1.0 kHz tone at deviation as per step 4 above.
Main Rec. RSSI checks
-70dBm
-110dBm
-120dBm
Aux Receiver
repeat as per step 7
- 70 dBm +/-3
-110 dBm +/-3
-120 dBm +/- 3
WinRIS bar graph
same as step 7
WinRIS bar graph
The RSSI checks give a general indication of receivers'
health
Refer to factory technical
support only if RX data performance degradation is noticed combined to out of tolerance RSSI readings.
1 (unless you have set a lower value). Note that readings less than 40 watts (UHF model) or 35 watts (800MHz model) may be due
to losses in cables used for testing. Check also your wattmeter frequency calibration curve. Do not be too ready to condemn the
transmitter.
120 20120-101Preliminary
16
GeminiPD+ Installation Guide
Table 4 - Tests, NPSPAC & Half Channel Units
STEP
ACTION
CHECKLIST B
EXPECTED RESULTS at
25°C
MEASURE WITH
IF NOT?
GeminiPD+ units are set and characterized at the factory to optimize performances. It is not recommended to try to readjust the units.
Power-up LED Sequence
Connect and save config
Press WinRIS Get button
Main transceiver Output
Power
Press TX (Unmod)
as per Table
1 - GeminiPD+ LEDs indications
as per WinRIS Help content
UHF: 40 watts
800MHz: 35 watts
900MHz: 25 watts
all +10%, -10%; Factory-settable
down to 10 watts (5 watts for
800MHz model) as per customer
request
Service monitor set to
read power
or
50W in-line wattmeter
Refer to factory technical
support.
Main transceiver Reflected
Power
Press TXON (Unmod)
< 5% of forward power or as
specified by System Eng.
10W in-line wattmeter
Check for bad connections,
damaged coax cable, etc.
Carrier Frequency Error
Press TX (Unmod)
± 300 Hz
Service monitor set to
read frequency error
Refer to factory technical
support.
TX Deviation (in kHz)
Press
TXON (Modulated)
Special channel unit
xRC4FSK
19.2 kb/s
Carrier will be modulated with
16.0 kb/s
a 1 kHz tone.
DGFSK
9.6 kb/s
8.0 kb/s
800 US
900 US
(NPSPAC)
±2.1
±2.2
±2.4
800 US
±2.5
±2.5
±2.8
900 US
±3.2
±3.5
Half channel unit
xRC4FSK UHF
800 US
800 CA
16.0 kb/s ±1.9
±1.9
±1.9
14.4 kb/s ±2.3
±2.3
DGFSK UHF 800 US
9.6 kb/s
8.0 kb/s
±2.5
±1.5
Service monitor set to
read deviation
(IF filter set to Mid or
30 kHz position)
Refer to factory technical
support.
±2.3
800 CA
±2.5
±1.5
±2.5
±1.5
Tolerance is +5%, -10% for all bit rates.
RF Data Link test
Use the base station address
function and “Send” button to
dynamically test the link
Look for
“Delivery confirmed” on the
WinRIS Status bar.
Refer to section
4.3.2 and to
WinRIS Help
content.
Check on the WinRIS RSSI bar
graph if the base station is within
range (i.e. better than -107dBm) or
Refer to factory technical support.
Set the service monitor to generate at the unit antenna jack the RF levels mentioned below. The carrier generated
should be modulated with a 1.0 kHz tone at deviation as per step 4 above.
Main Receiver RSSI checks
-70dBm, -110dBm, -120dBm
Aux. Receiver RSSI checks
repeat as per step 7
- 70 dBm +/-3 dB
-110 dBm +/-3 dB
-120 dBm +/- 3 dB
WinRIS bar
graph
same as in step 7 above
WinRIS bar
graph
The RSSI checks give a general indication of receivers' health
Refer to factory technical support only
if RX data performance degradation is
noticed combined to out of tolerance
RSSI readings.
(unless you have set a lower value). Note that readings less than 40 watts (UHF model) or 35 watts (800MHz model) may be due to losses
in cables used for testing. Check also your wattmeter frequency calibration curve. Do not be too ready to condemn the transmitter.
120 20120-101Preliminary
17
GeminiPD+ Installation Guide
4.3
Additional test details
4.3.1 GPS Test
4.3.2 RF Data Link Test
About three minutes after ignition is turned-on,
the PWR LED on the GeminiPD+ front panel
should flash in amber color at the rate of one
pulse per second.1 This indicates that the GPS
has acquired the sky position of a sufficient
number of satellites to arrive at a ground position solution.
A link test between a mobile and a known base
station can be done using the WinRIS "Address"
and "Send" functions. The “Address” and “Device” fields, the “Send” button and the “Chat”
message screen are used to send messages to
specific mobile or base or to carry out RF test.
Start by entering the address of the mobile (or
base station) you wish to send a test message to
or test:
If the GPS has a good view of the sky and still
has not generated any position solution within
three minutes (it may take up to 10 minutes or
more if the sky view is partially blocked.), the
following trouble-shooting procedures should be
undertaken to isolate the fault:
1- Specify the address:
Addresses may be entered by typing directly
in the “Address” field in two ways:
- Numerically, the valid address range is
1-126.
- As an “Alpha-Mapped-Nibble” (AMN) address, consisting of upper case letters in the
range A-P. The valid address range is A to
GN.
- The base address is usually: 1.
- The program may display one of the following messages on the status bar:
- For Paragon products:
“address is not in AMN or number format”
- For mobile products:
“address is not in the range A – GN”
In either case, check that the address entered is
within the acceptable range, is of a valid format
and correctly typed.
2- Enter the Device number for mobile (or base
station).
3- Press the Send button.
The Chat window reports “Sent to xx mobile”
(where xx is mobile name).
If test is successful:
Status line reports “Delivery confirmed.
If test unsuccessful:
Chat window reports “Waiting”,
Then the Status line reports “Delivery Failed”.
1) Disconnect the GPS antenna cable connector
from the Gemini radio and check for + 5
VDC on the center pin of the GPS antenna
connector on the radio using a Digital voltmeter (DVM). If the voltage is present, do
not reconnect the cable and proceed to step 2.
2) With the DVM, measure resistance between
the shell and the center conductor of the GPS
cable, resistance should be between 100 and
300 Ohms, if it measures open or short circuit
the GPS antenna is either a passive antenna
which is the WRONG type, or a defective
active antenna, replace with a known good
active antenna.
3) Connect the new antenna to Gemini and wait
about three minutes for the POSITION
ACQUIRED indicator to start flashing on
GeminiPD+, if not, the Gemini radio or its
GPS receiver is defective
Lit green and flashing amber for the 800MHz model
under 25% duty cycle limit.
120 20120-101Preliminary
18
GeminiPD+ Installation Guide
5. Specifications
GENERAL
UHF
Frequency
403 - 460MHz , 450 - 512
MHz
Channel spacing
800 MHz
900 MHz
TX 806 - 824 MHz, RX 851 869 MHz
TX 896 - 901 MHz, RX
935 - 941 MHz
12.5 or 25 kHz
Frequency Control
Digital Synthesizer / uController
Frequency Stability
1.5 ppm
Operating temperature
-30°C to +60°C (25°C nominal) @ 95% non-cond. RH
Modes of Operation
Half Duplex
Number of channels
16 internally stored, flash-EEPROM programmable
Supply voltage
Circuit Protection
RX Current at 13.6 VDC
13.6Vdc nominal (negative ground)
10.9 – 16.3 VDC
15 Amp fuse external,
Internal crowbar diode for reverse polarity protection
< 650 mA Standby (with GPS receiver)
TX Current at 13.6 VDC
TX/RX separation
< 15 A
any, 5 MHz typical
Nominal Dimensions
45 MHz typical
39 MHz typical
7.1” D x 6.0” W x 2.0” H
Weight:
< 4.5 lbs.
RF input/output Impedance
50 ohms nominal
RF connector
Main TX/RX: mini-UHF female
Auxiliary RX: mini-UHF female
GPS RX: SMA female (Not installed for Gemini
Interface connector
PD+
Lite version)
3x DE-9F D-subminiature
RECEIVER
Sensitivity (12 dB SINAD)
-116 dBm (< 0.35 µV) *
Adjacent channel rejection
(Selectivity)
75 dB @25 kHz, 65 @ 12.5 kHz
Intermodulation rejection
75 dB
FM hum & noise ratio
40 dB @12.5 kHz, 45 dB @ 25 kHz *
Spurious Response
Rejection
80 dB
Conducted spurious
-57 dBm
* psophometrically weighted filter
TRANSMITTER
Power output
UHF = 10-40 watts
Duty cycle
800 MHz = 10-35 watts
25% @ full power, 30 secs. max. TX time (subject to FCC MPE limit)
Conducted Spurious
-80 dBc
Frequency stability
1.5 ppm
FM hum and noise ratio
40dB @ 1.5 kHz deviation, 45 dB @ 3.0 kHz deviation
Attack time
< 10 ms
Operation
Half duplex
WARNING:
900 MHz = 10-25 watts
The frequency band 406 to 406.1 MHz is reserved for use by distress beacons and should not
be programmed into the unit.
120 20120-101Preliminary
19
GeminiPD+ Installation Guide
Data rates and
Modulation type
DGFSK (8000 b/s, 9600 b/s, 19200 b/s)
SRRC4FSK (14400 b/s, 16000 b/s,19200b/s, 25600 b/s)
PD+
RC4FSK (32000 b/s: Gemini
only)
UHF
800 MHz
900 MHz
–112 dBm at 19200 b/s full
channel
–110 dBm at 25600 b/s full
channel
–107 dBm at 32000 b/s full
channel
–112 dBm at 19200 b/s
full channel
–109 dBm at 25600 b/s
full channel
–107 dBm at 32000 b/s
full channel
–112 dBm at 16000 b/s
NPSPAC channel
Dataradio Proprietary DBA with OOB AAVL support
Packet Error Rate
(for < 1% error, with
Parallel Decode, at Fc)
Protocol
TBD
TBD
TBD
TBD
DISPLAY and CONTROLS
2 status LEDs
RX/TX, PWR
Environmental MIL. spec.
Environment
Categories
Low Pressure
High Temperature
Low Temperature
Temperature Shock
Solar Radiation
Rain
Humidity
Dust
Vibration
Shock
Operations
Operations, Storage
Operations, Storage
Transfer of equipment
Heat effects
Drip rain
Induced, Aggravated
Blowing dust
Ground Mobile
Functional, Bench handling
FCC / IC CERTIFICATIONS
MIL Spec. 810E
Method
Procedure
500.3
II
501.3
I(A1), II
502.3
I(C3), II (C1)
503.3
I(AI,C2)
505.3
506.3
II
507.3
II,III
510.3
514.4
I(8)
516.4
I,VI
Other
IEC IP54 only II
IEC IP54
EIA RS-204C Forestry
EIA RS-204C
EMISSION DESIGNATORS
FCC
IC (DOC)
Bit
rate
Baud
rate
Modulation
UHF
800MHz
900MHz
UHF
EOTGPDA
773195525A
19200
16000
19200
16000
DGMSK
DGMSK
15K0F1D
15K3FID
15K0F1D
15K3F1D
800 MHz
EOTGPDB
773195643A
9600
8000
9600
8000
DGMSK
DGMSK
8K60FID
8K60F1D
10K2F1D
8K75F1D
900 MHz
EOTGPD9
32000
25600
19200
16000
14400
16000
12800
9600
8000
7200
RC4FSK
SRRC4FSK
SRRC4FSK
SRRC4FSK
SRRC4FSK
16K5F1D
15K6F1D
15K6F1D
15K6F1D
8K17F1D
8K67F1D
10K0F1D
11K0F1D
9K92F1D
10K7F1D
11K8F1D
PD
MIL Specification not guaranteed with Gemini
120 20120-101Preliminary
Lite version.
20
GeminiPD+ Installation Guide
Appendix 1 - "Officer Requires Assistance" alarm function
The contents of this appendix are also available as Technical Instruction Sheet 009 (TIS009),
document part number 122 20110-009 dated December 20, 2000.
Overview
The DTE Port Interface pin 9 (AUX) on DEV-2 is used for the “Officer Requires Assistance”
alarm function.
Intended Audience
This document is designed for use by System Integrators.
Physical Connection
This auxiliary input may be activated by (normally open) dry contact pull-up to the port’s DSR
output. It can also tolerate user pull-up to external +12 VDC (car battery), but an isolated dry
contact is preferred due to the risk of noise-related false alarms caused by the vehicle’s electrical
system.
A +3 to +12 V signal at this pin will send a DMP “x” (On) message to the base.
An open or ground signal will send a DMP “y” (Off) message.
Messages are only sent when a signal transition occurs (debounced for approximately 100 ms).
Operation
When using GeminiPD+ or GeminiPD+ Lite products, activating the “Officer Requires Assistance”
alarm input starts emergency communications:
•
The modem creates DMP “x” or “y” messages.
•
Any other pending message(s) will be failed to avoid delaying the alarm message on account
of lower priority traffic and to remove non-emergency messages from duty-cycle management (if applicable). In the case of a “q” message, a D-NAK* will be immediately returned.
•
Base and Channel hunt will take place for the usual number of retries per base (according to
configuration) but will cycle forever until D-ACKed1 or Reset1.
•
Lack of base DBA synch will not prevent transmission to maximize the chance that a base
gets the alarm signal. DBA “Freewheel” mode will be forced until the alarm is acknowledged.
For details on DMP terms, refer to DMP 1.5 manual, version 4.0
120 20120-101Preliminary
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GeminiPD+ Installation Guide

---

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Subject                         : Gemini/PD hardware and operation
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