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Hardware Description

Overview

This chapter describes the major hardware building blocks of the GPS6185HR. The components
discussed in this chapter include:

•

The GPS Receiver Module

•

Antenna

•

UART

Channel

•

Pulse

Outputs

Block Diagram

Below is a block diagram of the GPS6185HR.

NovAtel

OEM4-G2L

GPS

Engine

EPLD

I
S
A

B
U
S

16C550

UART

16C550

UART

COM1

COM2

RS-232/422/485

CN6

GPS Utility

CN5

Digital I/O

CN3

USB

CN4

Utility

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21
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24
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Summary of Contents for GPS6185HR

Page 1: ...BDM 610020042 Rev A GPS6185HR User s Manual Global Satellite Positioning PC 104 Module...

Page 2: ...2 GPS6185HR User s Manual RTD EMBEDDED TECHNOLOGIES INC 103 Innovation Blvd State College PA 16803 0906 Phone 1 814 234 8087 FAX 1 814 234 5218 E mail sales rtd com techsupport rtd com Web Site http w...

Page 3: ...hnologies 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 Technol...

Page 4: ...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...

Page 5: ...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 Dig...

Page 6: ...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: ...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...

Page 8: ...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...

Page 9: ...s 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 ha...

Page 10: ...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 Co...

Page 11: ...nd 5 VCC 3 3V Supply 6 VCC 3 3V Supply 7 Event 2 Mark 2 Input 8 Event 1 Mark 1 Input 9 ERROR Fatal error when high 10 PV Valid GPS position when high 11 CTS2 COM 2 Clear to send 12 Reset Low output in...

Page 12: ...are shown below Pin Name Description 1 PPS 1 Pulse Per Second Output 2 VARF Variable Frequency Output 3 Event 1 Mark 1 Input 4 Event 2 Mark 2 Input 5 Reset Low output indicates GPS in reset 6 Reserve...

Page 13: ...GND Ground 10 GND Ground GND Ground Note on using RS 422 or RS 485 Mode When using the serial port in RS 422 or RS 485 mode the serial transmitters are enabled and disabled under software control The...

Page 14: ...hen using the serial port in RS 422 or RS 485 mode the serial transmitters are enabled and disabled under software control The transmitters are enabled by manipulating the Request To Send RTS signal o...

Page 15: ...ation JP3 Open GPS or COM Base Address Jumpers Default GPS 3E8h COM 2E8h The base address selection jumpers A3 through A8 allow you to set the base address of the first UART that connects to the GPS m...

Page 16: ...X 2D8 X X X X 2E0 X X X 2E8 X X X X 2F0 X X X X 2F8 X X X X X 300 X 308 X X 310 X X 318 X X X 320 X X 328 X X X 330 X X X 338 X X X X 340 X X 348 X X X 350 X X X 358 X X X X 360 X X X 368 X X X X 370...

Page 17: ...ddresses can make system setup and configuration easier IRQ Jumpers Default GPS IRQ 5 closed G Jumper closed Default COM IRQ 10 closed G Jumper closed The IRQ selection jumpers allow you to set the IR...

Page 18: ...the following guidelines An interrupt can only be shared if all devices on the IRQ support it If you have two sharing and one non sharing device on the same IRQ it will not work To share interrupts t...

Page 19: ...85 mode With this setting baud rate divisors will be 8 times larger for the same baud rate For example in normal mode 9600 baud has a baud rate divisor of 12 In high speed mode 9600 baud has a baud ra...

Page 20: ...of the GPS6185HR s PC 104 connector with the PC 104 bus of the stack and gently press the board onto the stack The board should slide into the matching PC 104 connector easily Do not attempt to force...

Page 21: ...be configured manually Beyond the IRQ and base address you may also need to configure the serial port parameters The UART interface is controlled by jumper settings The procedure for configuring the...

Page 22: ...85HR The components discussed in this chapter include The GPS Receiver Module Antenna UART Channel Pulse Outputs Block Diagram Below is a block diagram of the GPS6185HR NovAtel OEM4 G2L GPS Engine EPL...

Page 23: ...data is sent to the host from the receiver through standard 16C550 compatible UARTs All x86 operating systems will recognize and support this serial communication device The GPS6185HR uses its own on...

Page 24: ...ed to the virtual serial ports The USB drivers along with installation instructions are available on the OEM4 Family CD by selecting USB Support from the main menu You can also check for updates to th...

Page 25: ...as BA can be set using the jumpers as described in Chapter 2 Board settings The following sections describe the register contents of each address used in the I O map GPS6185HR I O Map Write Read Addr...

Page 26: ...high Bit 7 GPS 1 Pulse per second 1 pulse per second from GPS GPS6185 Digital I O GPS BA 404h Digital I O 1 8 Write Read 8 bit This register controls the output bits 1 8 The last data written to the p...

Page 27: ...bit or 16 bit RTD ID is a method to identify a board on the ISA bus There are two 8 bit registers mapped at 400h and 401h above the board base address The registers can be read as two 8 bit or one 16...

Page 28: ...terrupts unless the Interrupt Enable register has been properly programmed Since the GPS6185HR has 16C550 UARTs it supports all of the standard serial port interrupt events These events include Receiv...

Page 29: ...conds cold 50 seconds Update rate 20 Hz Reacquisition 0 5 seconds L1 typical 1 second L2 typical Dynamics Vibration 4G sustained tracking Velocity 515 m s2 Height 18 288 m Supported data protocols RTC...

Page 30: ...y 1 8432 MHz or 14 7456 MHz jumper selectable Base addresses 64 each Interrupts 2 3 4 5 6 7 10 11 12 14 and 15 GPS6185HR Operating Conditions Operating temperature range 40 to 85 C Storage temperature...

Page 31: ...EA website http www nmea org Serial Port Programming For more information about programming serial port UARTs consult the following book Serial Communications Developer s Guide By Mark Nielson ISBN 07...

Page 32: ...RTD EMBEDDED TECHNOLOGIES OR AS A RESULT OF SERVICE OR MODIFICATION BY ANYONE OTHER THAN RTD EMBEDDED TECHNOLOGIES EXCEPT AS EXPRESSLY SET FORTH ABOVE NO OTHER WARRANTIES ARE EXPRESSED OR IMPLIED INCL...

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