rtd GPS6185HR User manual

BDM-610020042
Rev. A
GPS6185HR User's Manual
Global Satellite Positioning PC/104 Module

Page 2 of 32
GPS6185HR User's Manual
RTD EMBEDDED TECHNOLOGIES, INC.
103 Innovation Blvd
State College, PA 16803-0906
Phone: [phone]
FAX: [phone]
E-mail
[email protected]m
[e-mail]
Web Site
http://www.rtd.com

Page 3 of 32
Manual Revision History
Rev A New manual
Published by:
RTD Embedded Technologies, Inc.
103 Innovation Boulevard
State College, PA 16803
Copyright 2005 by RTD Embedded Technologies, Inc.
All rights reserved
The RTD Embedded Technologies Logo is a registered trademark of RTD Embedded
Technologies. dspModule, cpuModule, and utilityModule are trademarks of RTD Embedded
Technologies. PC/104, PC/104-Plus, and PCI-104 are registered trademarks of the PC/104
Consortium. All other trademarks appearing in this document are the property of their respective
owners.

Page 4 of 32
Table of Contents
Introduction...................................................................................................................................... 7
Product Overview......................................................................................................................... 7
Board Features ............................................................................................................................ 7
GPS6185HR Features.......................................................................................................... 7
GPS Receiver....................................................................................................................... 7
I/O Interfaces................................................................................................................................ 8
16C550 Compatible UARTs ................................................................................................. 8
Connector Description.......................................................................................................... 8
Available Options......................................................................................................................... 8
Getting Technical Support ........................................................................................................... 8
Board Connections........................................................................................................................ 10
Connector and Jumper Locations.............................................................................................. 10
External I/O Connections........................................................................................................... 10
CN7 – GPS Receiver Connector (to GPS module)................................................................ 11
CN5 – GPS Utility Connector................................................................................................. 12
CN6 – Serial Connector ......................................................................................................... 13
Jumpers ..................................................................................................................................... 13
GPS or COM Base Address Jumpers (Default: GPS = 3E8h, COM = 2E8h)....................... 15
IRQ Jumpers (Default: GPS IRQ 5 closed, G Jumper closed)......................................... 17
(Default: COM IRQ 10 closed, G Jumper closed)................................................................. 17
Reserved IRQs ...................................................................................................................17
The G Jumper..................................................................................................................... 18
RS-422/485 Termination for CN6 (Default: JP3 open) .......................................................... 18
JP3 Jumper – Default Open ............................................................................................... 18
GPS Configuration (Default: JP8 1-2 = closed, JP8 3-4 closed) .......................................... 18
JP8 1-2 Jumper – Default Closed....................................................................................... 18
JP8 3-4 Jumper – Default Closed....................................................................................... 19
DIO Pullup/Pulldown Configuration (Default: JP1 & JP2 2-3 = closed)................................ 19
JP1 Jumper – Default 2-3................................................................................................... 19

Page 5 of 32
JP2 Jumper – Default 2-3................................................................................................... 19
Active Antenna Supply...........................................................................................................19
Board Installation........................................................................................................................... 20
Installing the Hardware.............................................................................................................. 20
Static Precautions .................................................................................................................. 20
Steps for Installing.................................................................................................................. 20
Configuring Software ................................................................................................................. 20
Hardware Description.................................................................................................................... 22
Overview.................................................................................................................................... 22
Block Diagram............................................................................................................................ 22
The NovAtel GPS Receiver Modules......................................................................................... 23
Antenna...................................................................................................................................... 23
UARTs........................................................................................................................................ 23
USB............................................................................................................................................ 23
Pulse Outputs............................................................................................................................. 24
1 pulse/sec output and LED................................................................................................... 24
Software Programming.................................................................................................................. 25
Device I/O Map .......................................................................................................................... 25
GPS6185 Control/Status............................................................................................................ 25
GPS6185 Digital I/O................................................................................................................... 26
GPS6185 RTD ID ...................................................................................................................... 27
Interrupts.................................................................................................................................... 28
GPS6185HR Specifications........................................................................................................... 29
GPS Receiver Specifications.....................................................................................................29
Physical Attributes.................................................................................................................. 29
Operational............................................................................................................................. 29
RF Signal Environment .......................................................................................................... 29
Environmental ........................................................................................................................ 29
UARTs........................................................................................................................................ 29
GPS6185HR Operating Conditions ........................................................................................... 30

Page 6 of 32
Additional Information.................................................................................................................... 31
NovAtel OEM4-G2L GPS Receiver ........................................................................................... 31
NMEA-0183 v2.01 Standard...................................................................................................... 31
Serial Port Programming............................................................................................................ 31
Interrupt Programming............................................................................................................... 31
GPS Antennas ........................................................................................................................... 31
Limited Warranty............................................................................................................................ 32

Page 7 of 32
Introduction
Product Overview
The GPS6185HR is designed to provide a global positioning system (GPS) for PC/104-based
systems. Included on the GPS6185HR is a NovAtel OEM4-G2L series GPS receiver. The
GPS6185HR has an onboard dual UART chip that permits communication with both serial ports
on the GPS receiver module over the PC/104 bus without using other serial ports in the PC/104
system. The GPS6185HR supports NAVMAN binary protocol and National Marine Electronics
Association (NMEA-0183) v2.01 messages.
Board Features
GPS6185HR Features
oTwo direct connections to onboard GPS receiver module
oChoice of GPS message formats
RTCA
RTCM
RTCMV3
CMR
NMEA
oPC/104 compliant
GPS Receiver
The OEM4-G2LTM is a parallel 24-channel, dual-frequency or 12-channel, single-frequency
receiver featuring a 60 mm x 100 mm form-factor and low power consumption. All OEM4-
G2L cards feature position output, real-time DGPS positioning, support for RTCA and
RTCM messages, two serial ports and a USB interface. The OEM4-G2L is configurable as
a rover or base station and is designed for embedded applications.
All OEM4 family receivers have the following features:
•24 channel “all-in-view” parallel tracking
•Pulse Aperture Correlator (PAC) technology
•Fast reacquisition
•Fully field-upgradeable firmware
•Low power consumption
•20 Hz raw data and position output rates
At a minimum, the following models are available for each receiver:
•L1 only
•L1/L2
•L1 plus RT-20
•L1/L2 plus RT-2
•L1 plus Satellite-Based Augmentation System (SBAS) support
•L1/L2 plus SBAS support
Those models with dual-frequency capabilities make the following possible:
•Longer baselines in differential positioning mode, due to the reduction errors
•Faster resolution of carrier-phase ambiguities when performing RTK
•Enhanced positioning precision due to the additional measurements

Page 8 of 32
I/O Interfaces
The GPS6185HR can be controlled and monitored by software through the two dedicated serial
ports of the module.
A utility I/O connector provides a connection to the onboard GPS 1 pulse/sec time mark as well
as programmable onboard timing signals. Two event inputs can be used to trigger position of
time logs.
16C550 Compatible UARTs
The GPS receiver module communicates through two dedicated UART channels allowing other
serial ports in the system to be free for the user. The 16C550 UART is recognized by all x86
operating systems, and does not require a special communication driver to receive data from the
GPS receiver. The base address and interrupt of the UART channel can be changed with
onboard jumpers. For information on how to install the jumpers, please refer to the “Board
Connections” chapter of this manual.
Connector Description
The GPS receiver antenna interface and external clock interface are female MMCX type
miniature coaxial connectors. Connect your antenna directly to the GPS6185HR antenna
connector, or use a short cable inside your enclosure to connect to a feed through connector to
allow connection of the antenna to the wall of your enclosure. The GPS module supplies up to
100 mA of 4.75 – 5.10 VDC for antenna LNA.
All other I/O connections to the GPS6185HR use 0.1” header type terminals.
Available Options
The GPS6185HR is available as a starter kit, bundled with an active antenna. It may also be
purchased as an IDAN module for integration into an RTD IDAN system.
The following is a summary of the different GPS6185 configurations:
Part Number Description
GPS6185HR GPS6185HR
SK-GPS6185HR GPS6185HR with an active antenna
IDAN-GPS6185HRS GPS6185HR mounted in an IDAN frame
IDAN-SK-GPS6185HRS GPS6185HR mounted in an IDAN frame with an active
antenna
For antenna specifications, please refer to the “Additional Information” chapter of this manual.
Getting Technical Support
If you are having problems with your system, please try the following troubleshooting steps:

Page 9 of 32
•Simplify the System – Remove modules one at a time from your system to see if there
is a specific module that is causing a problem.
•Swap Components – Try replacing parts in the system one-at-a-time with similar parts
to determine if a part is faulty or if a type of part is configured incorrectly.
If problems persist, or you have questions about configuring this product, obtain the base address
and IRQ settings of the GPS6185HR and other modules in the system. After you have this
information, contact RTD Embedded Technologies via the following methods:
Phone: [phone]
E-Mail: [e-mail]
Be sure to check the RTD web site (http://www.rtd.com) frequently for product updates, including
newer versions of the board manual and application software.

Page 10 of 32
Board Connections
Connector and Jumper Locations
The following diagram shows the location of all connectors and jumpers on the GPS6185HR.
Future revisions of the GPS6185HR may have cosmetic differences. For a description of each
jumper and connector, refer to the following sections.
External I/O Connections
The following sections describe the external I/O connections of the GPS6185HR.
GPS6185HR Connector and Jumper Locations
PC/104 (ISA) Connector
Base Address
Jumpers IRQ Jumpers and G Jumper
CN3
Digital I/O
JP8
Mode Select
GPS External
Clock Input
On Module
CN4
USB
CN5
GPS Utility
CN6
Serial Port
GPS Antenna
Input
On Module
JP1 & JP2 DIO
Pullup/Pulldown
JP3
RS-422/485
Termination
1-2
3-4