Navman GPS Receiver LA000578A User Manual

Jupiter 30

20-channel GPS receiver

module

Development kit Guide

(AA003029 series)

Related documents

• Jupiter 30 Data sheet LA000576

• Jupiter 30 Product brief LA000575

• SiRF Binary Protocol reference manual

MN000314

• NMEA reference manual MN000315

• SiRFDemo and SiRFﬂash user guide

MN000316

Figures

Figure 2-1 Equipment supplied in the Jupiter 30 GPS Development Kit............................ 4

Figure 3-1 Front and back panels of the Jupiter 30 development unit .............................. 5

Figure 3-2 Conﬁguration DIP switch .................................................................................. 7

Figure 3-5 Internal layout of the development unit............................................................. 8

Figure 3-3 Function LEDs on front panel ........................................................................... 9

Figure 3-6 Jupiter 30 adapter board .................................................................................10

Figure 3-4 Pin layout of the clock out connector...............................................................11

Figure 4-1 Development unit test equipment.....................................................................15

Tables

Table 3-1 DIP switch settings............................................................................................. 7

Table 3-2 Pin functions of the clock out connector ............................................................ 9

Table 3-3 Mating connector part description.....................................................................11

Table 3-4 Pin functionality.................................................................................................11

Table 3-5 Signals available on the test points...................................................................12

Table 3-6 Connections J1 (2 mm pitch header) and J2 (2.54 mm pitch header) ..............13

1.0 Introduction

This document provides detailed guidelines for the operation and conﬁguration of the Jupiter

30 GPS Module Development Kit. The AA003029 series of development kits assist in the

integration of the Jupiter 30 in a customer’s application, offering a simple and easy to use

platform for evaluation purposes.

It is recommended that the user pays particular attention to the conﬁguration settings outlined

in section 3.0 prior to applying power and operating the development unit. For example, it is

important to understand and recognise the main functional switches and connector locations

accessible on the development unit’s front and rear panels. Following this information, simple

step-by-step guidelines are presented to ensure successful setup of the development unit.

In addition to hardware, the GPS Development Kit is supplied with SiRFDemo and SiRFﬂash

analysis software to allow communication with the Jupiter 30 GPS receiver through a serial port.

The Windows based software presents the receiver’s raw data in a geographical form, allowing

both detailed analysis and evaluation for both NMEA and SiRF Binary formats.

2.0 Equipment

This section provides a brief overview of the equipment included in the Jupiter 30 GPS

Development Kit.

2.1 Equipment supplied

This kit should contain the items illustrated in Figure 2-1.

1. Jupiter 30 GPS development unit

The Jupiter 30 GPS receiver development unit includes all of the following hardware to allow

thorough evaluation:

• Dual RS232 level serial data I/O ports

• Selectable bias voltages for active GPS antennas

• Backup power source for SRAM and RTC

• Provision to insert a current measuring device to monitor both primary and backup power

usage under various conditions

• Regulated DC power supply to the Jupiter 30 module

• Status indication through four LEDs on front panel

• Conﬁgurable functionality using a DIP switch accessed through the front panel

(2)

(6)

(1)

DC Power

9-16Volts

Serial Port 1

Serial Port 2

Antenna

Clock

Out

(4)

(5)

(3)

software and documentation

Figure 2-1 Equipment supplied in the Jupiter 30 GPS Development Kit

Note: before supplying power to the development unit, please review the conﬁguration settings and

operation described in this document for optimum performance of the Jupiter 30 GPS receiver.

2. GPS antenna with pre-amp, magnetic base and SMA connector

A magnetic-mount active antenna is supplied with the receiver development kit, along with an

RF cable (RG-316) already terminated with the proper connector for the development unit. The

nominal measured attenuation of the cable with connectors is approximately 5 dB. The supplied

active antenna should be biased at +3 VDC, but a different active antenna with a bias of either

+3, +5 or +12 VDC may be used. Refer to section 3.2 to ensure that the conﬁguration switches

on the front panel of the development unit are chosen to select the appropriate bias voltage.

Caution: ensure antenna power switches are properly set before connecting the antenna. An

antenna designed for +3 VDC operation will be damaged if connected to a +12 VDC

source.

3. Serial interface cable

A serial cable is provided to interface between the development unit and the customer’s PC, or

between the development unit and a DGPS receiver. This cable is terminated at both ends with

female connectors to match the male connectors on the development unit and the PC. If the PC

used only supports a USB port, an RS232/USB converter could be utilised.

4. Power adapter for 240/120 VAC operation

DC power for the development unit is provided by either an AC/DC converter or automobile

adapter. The AC/DC converter operates from a nominal 120/240 VAC input and provides a

12 VDC at 500 mA out.

5. Power adapter for 12 VDC vehicle operation

For mobile operation, an automotive adapter intended for use in 12 VDC vehicles is provided.

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reset

power

conﬁguration

‘U’ slot for

antenna

SMA

antenna

DC Power

9-16Volts

Serial Port 1

Serial Port 2

Antenna

Clock

Out

1PPS

dead

reckoning

comm 1

NMEA &

comm 2

(RTCM)

DC input

Figure 3-1 Front and back panels of the Jupiter 30 development unit

(showing functional switches and connector locations)

6. Software and documentation CD

The CD contains the Jupiter 30 GPS receiver data sheet, PC Analysis software (SiRFDemo and

SiRFﬂash), and other information on how to use GPS receivers.

2.2 Equipment required

The following equipment is also required to evaluate the Jupiter 30 receiver.

• IBM compatible PC

• Minimum one serial port (If your PC only has USB, a USB/RS232 converter can be

employed)

• Windows 95/98, WinNT4.0 or higher

• 486 100MHz or higher

• SVGA at least 800x600 resolution

• 16 Megabytes of RAM

• 6 Megabytes (min) of disk space

3.0 Technical conﬁguration

This section provides a detailed description of all the technical aspects and conﬁgurable

functionality of the Jupiter 30 GPS development unit.

3.1 Overview

Figure 3-1 illustrates the connectors, switches and LEDs available on the development unit.

3.1.1 Power switch (On/Off)

The switch on the front panel controls primary power to the Jupiter 30 receiver module inside.

The power status LED (see section 3.3) indicates the state of the unit: if lit, the module has

primary power supplied. If the conﬁguration DIP switch 5 is on and Jumper JB5/6 linked, the

module’s secondary supply SRAM and RTC will continue to be powered when the power switch

is off. Only the removal of the DC power input at the rear of the unit will stop secondary power

being applied (assuming Jumper JB5/6 and switch 5 are correctly set). Having this secondary

power supply applied means that the Jupiter 30 will have a ‘hot start’ capability when primary

power is re-applied within 4 hours, and a ‘warm start’ thereafter, by maintaining last position,

current time and satellite ephemerides.

3.1.2 Conﬁguration DIP switch

The conﬁguration DIP switch on the front panel provides the ability to conﬁgure the Jupiter

30 module, offering ﬂexibility depending on the speciﬁc application. Refer to section 3.2 for a

description of the functionality of each individual switch, including the typical settings when using

the Jupiter 30 module.

3.1.3 Function LEDs

The four LEDs on the front panel provide an indication of the current status of basic features

associated with the development unit. Refer to section 3.3 for a complete description of the

function of each LED.

3.1.4 Reset switch

A reset push button is provided on the front panel to generate a receiver system hardware reset.

3.1.5 Clock out connector

The Clock out connector, located on the rear panel of the development unit, can be used to

provide module generated timing signals. Refer to section 3.4 for more detailed information.

3.1.6 Serial port 1

This host serial port is used to send and receive serial data. This port is used as the default, with

transmission in NMEA format at the rate of 9600 Baud. The connectors to be used with these

serial ports are 9-pin D-subminiature connectors.

3.1.7 Serial port 2

This is the auxiliary serial port, and primarily used for the reception of RTCM SC-104 DGPS

(Differential GPS) correction messages.

3.1.9 Antenna connector

The antenna provided with this development kit should be connected to the SMA connector

located on the rear panel of the development unit.

3.1.10 DC power input

The supplied DC power adapter is to be plugged into the DC connector on the rear panel of

development unit. The development unit will accept voltages from 9 to 16 VDC. The middle pin

on J1 is negative polarity, while the outer shell is positive.

3.2 Conﬁguration DIP switch

A typical setting of the Conﬁguration DIP switch is shown in Figure 3-2.

1 2 3 4 5 6 7 8

OFF

Figure 3-2 Conﬁguration DIP switch

Table 3-1 outlines the available functionality and corresponding switch position for the

Conﬁguration DIP switch.

Switch

Description

GPIO3/GYROIN*

Typical setting

OFF (high)

GPIO15/FR*

OFF (high)

Serial BOOT

OFF (normal run)

OFF (high)

GPIO1/W_TICKS*

RTC BACKUP POWER

PREAMP power select

PREAMP power enable

ON (enabled)

OFF (3 V)

OFF (12 V)

ON (enabled)

* These functions have been disabled by internal switch

SW3 to allow correct operation of the antenna current sense

circuits on the Jupiter 30 adapter board.

Table 3-1 DIP switch settings

A brief description of the functionality of each switch is speciﬁed below. Refer to the Jupiter 30

Data sheet for more information about the functionality of speciﬁc pads. The receiver

operating settings will not change after moving the position of a conﬁguration switch while the

development unit is operating. Pressing the reset switch, or turning the unit off and on will enable

the settings to take effect in the receiver. The recommended method for reconﬁguration is to

switch the unit off, modify the switch positions, then re-apply the power.

3.2.1 DIP switch 1 – GPIO3 /GYROIN input

DIP switch 1 interfaces with the GPIO3 /GYROIN pad of the module. The switch is typically

off, but has no effect with the standard module’s software. This switch can be enabled by the

internal switch SW3.1.

3.2.2 DIP switch 2 – GPIO15 /FR input

DIP switch 2 interfaces with the GPIO15 /FR pad of the module. The switch is typically off, but

has no effect with the standard module’s software. This switch can be enabled by the internal

switch SW3.2.

3.2.3 DIP switch 3 – BOOT from serial mode

DIP switch 3 interfaces with the BOOT pad of the module and allows the user to upgrade the

Flash memory. For normal operation the switch should be set to off. To boot from the serial port

the switch should be set to on. This switch is enabled by the internal switch SW3.3.

3.2.4 DIP switch 4 – GPIO1/W_TICKS input

DIP switch 4 interfaces to the GPIO1/W_TICKS pad of the module. The switch is typically

off, but has no effect with the standard module’s software. This switch can be enabled by the

internal switch SW3.4.

3.2.5 DIP switch 5 – RTC backup power enable

DIP switch 5 provides control of the RTC backup power to the module. When set to the on

position, the RTC backup power is applied to the module, allowing the RTC and SRAM to

continue being powered when the primary source is removed. The jumper JB5/6 must also be

in place for the backup power to be supplied. This power supply will be supplied to the module

even with the main power switch in the off position.

3.2.6 DIP switch 6 – Antenna preamp power select (3.3 V or 5/12 V)

Dip switch 6 provides control of the antenna preamp voltage applied to the module. The switch

position determines the supply voltage (off = 3.3 V, on = 5/12 V). Switch 6 should be left in the

3.3V (off) position. The positions of switches 7 and 8 also need to be considered when using

the preamp function.

Note: the supplied antenna is a 3.3 V type.

3.2.7 DIP switch 7 – Antenna preamp power select (5 V or 12 V)

DIP switch 7 also controls the antenna preamp voltage applied to the module. If switch 6 is

on, then switch 7 will determine the supply voltage to the active antenna (off = 12 V, on = 5 V).

Switch 7 is not operational when switch 6 is in the 3.3V (off) position.

3.2.8 DIP switch 8 – Antenna preamp power enable

DIP switch 8 provides the ability to enable/disable the antenna preamp voltage to the module

depending on the antenna being used. Typically this switch is on, enabling 3 V to be applied to

the active antenna supplied with the kit.

serial port 2

serial port 1

DR connector

DC power

timing connector

JB10/11/12

JB13/14/15

voltage selection

switch (3.3V or 5V)

test points E1 to E9

JB16/17

JB1/2

JB3/4

SW3

all off except SW3.3

ON/OFF switch

conﬁguration DIP

function LEDS

JB5/6

reset switch

switch

Figure 3-5 Internal layout of the development unit

3.3 Function LEDs

There are four LEDs on the front panel of the development unit, indicating the status of a

selection of basic functions. The functions of the LEDs are described in the sections that follow.

1PPS

Power

AUX

GPIO

Figure 3-3 Function LEDs on front panel

Note that some early versions of the evaluation unit have different LED legends.

3.3.1 1PPS

This LED will ﬂash on with each transition of the 1 PPS (Pulse Per Second) output of the GPS

receiver. The 1PPS LED will begin ﬂashing when the receiver is tracking a satellite.

3.3.2 Power

This LED indicates presence of primary DC power to the module.

3.3.3 AUX

This LED shows activity on the auxiliary serial RS232 port (DGPS).

3.3.4 GPIO

This LED indicates the state of GPIO15 , which can be set via DIP switch 2. This LED is lit when

switch 2 is set to on. (Note that switch 2 has no effect when using standard Jupiter 30 software.)

3.4 Clock out connector

The Clock out connector provides an interface for all associated timing signals with the module.

It provides the user access to the Time Mark (1PPS) signal. The pinout connections are

described in Table 3-2, and illustrated in Figure 3-4.

Pin number

Function

not used

inverted 1PPS signal

normal 1PPS signal

ground

Table 3-2 Pin functions of the clock out connector

J2 (not normally ﬁtted)

GPS ﬁx LED

RTC backup battery

(not normally ﬁtted)

power LED

Jupiter 30 module

antenna

Figure 3-6 Jupiter 30 adapter board

Figure 3-4 Pin layout of the clock out connector

A mating connector for the clock out connector is supplied with the development kit. The part

number is shown in Table 3-3.

Manufacturer

Part number

Molex

70400 series ‘G’

Table 3-3 Mating connector part description

3.5 Internal conﬁguration

It should not be necessary to open the development unit unless accessing the internal test pins.

Most combinations of I/O can be made from the front panel conﬁguration switch. In the event

that it is necessary to open the unit, Figure 3-5 illustrates the internal layout of the development

unit board.

As shown in Figure 3-5, there is a selection of links that can be conﬁgured to provide

functionality depending on the application. Table 3-4 lists the functions available.

Pins

Function when linked

Current link for 5 V supply. Can be used to

determine current on 5 V rail. Not used for

the Jupiter 30 module.

JB1/2

Current link for the primary power 3.3 V

supply. Can be used to determine supply

current for 3.3 V rail.

JB3/4

JB5/6

Current link for the secondary power RTC

supply. Can be used to determine supply

current for RTC rail.

JB10/11 5 V supplied to Pin 1 of the DR connector

3.3 V supplied to Pin 1 of the DR

connector

JB11/12

JB13/14 not used

JB14/15 not used

JB16/17 Internal interface enable (normally ﬁtted)

Table 3-4 Pin functionality

In addition to the conﬁgurable jumpers, there is a selection of test points on the board. The

signals available on the test points are shown in Table 3-5.

Test point

Function

TXA

RXA

TXB

RXB

1PPS

not used

ground

Table 3-5 Signals available on the test points

There are some settings that should not be changed when using the standard Jupiter 30 module

in conjunction with the development unit. These are as follows:

• SW2 must remain selected on 3.3 VDC

• Link for JB3/4 must be ﬁtted

• Link for JB16/17 must be ﬁtted

• SW3 DIP switch must be all off except SW3.3

3.6 Jupiter 30 module on adapter board

Figure 3-6 (on the following page) shows the adapter board with the positions of the connectors

and indicators.

Table 3-6 lists the pin conﬁgurations for the J1 and J2 connectors.

Jupiter function

J2 (2.54 mm

J1 (2 mm

pitch header) pitch header)

pin no.

V_ANT

VCC_RF

V_BATT

VDD

M_RST

GPIO3/GYRO IN

GPIO15/FR

BOOT

GPIO1/W TICKS

RFON

GND

TXA

RXA

GPIO4

GND

TXB

RXB

Wake-up

GND

GPIO13

GND

1PPS

GPS_FIX/GPIO10

Table 3-6 Connections J1 (2 mm pitch header) and J2 (2.54 mm pitch header)

4.0 Operating instructions

This section provides important information for the evaluation of the Jupiter 30 GPS module.

Step-by-step instructions for connecting and operating the GPS development kit are included for

ﬁrst time setup.

4.1 Initial connection and operation

The following steps describe how to connect and operate the GPS Development Kit.

Install the supplied SiRFdemo on your PC:

1. Insert the supplied CD into the CDROM drive

2. Double click on the SiRFDemo software icon and follow the installation process.

Set up the hardware:

1. Connect the DC power adapter to the power input J1.

2. Connect the antenna cable to the SMA coaxial antenna connector on the rear panel of the

Development unit.

3. Connect the DB9 serial data cable between the PC serial communication port and the

development unit’s Serial Port 1.

4. Place the antenna in a site where a good view of the sky can be seen (refer to section 4.2 for

more detail).

5. Run the GPS analyser software on the PC. (Refer to section 4.4 for more details.)

6. Connect the power supply to a suitable AC outlet.

7. Turn the unit on using the power switch on the front panel to provide primary power to the

Jupiter 30 receiver. Once power is applied, the Power LED should be lit.

4.2 Positioning the GPS antenna

The GPS antenna should be located with a clear view of the sky for optimal reception of the

satellite signals. The 1PPS LED should begin ﬂashing at 1 Hz once the receiver is powered

and has started receiving at least one satellite. This provides an indication of whether or not the

receiver is running.

Note: GPS signals may be severely attenuated or totally obscured by roofs, solid walls, dense

foliage, or even coated glass (found in many ofﬁce structures and car windows). The

development unit should be outside, or on the roof of a building to effectively evaluate

receiver performance. With stationary developments, care should be taken to keep the

antenna away from the side of a building as GPS signals can reﬂect off metal or coated

glass. These reﬂections have a longer path than direct signals and can cause multi-path

errors.

4.3 Connecting an RTCM differential source

For debugging purposes, it is suggested that users log both the GPS and RTCM data

simultaneously. To allow the provision to do this, Navman can supply a software program called

Labmon.

The development unit, PC and the RTCM SC-104 differential correction source are connected

as shown in Figure 4.1. If RTCM SC-104 data needs to be logged at the same time it is sent

to the receiver, the OEM must supply a cable with three connectors to connect the RTCM

correction source to the development unit’s auxiliary port and to an unused serial port on the

PC. In this case, data is only logged when Labmon is invoked with ﬁle names as command line

arguments (refer to the Labmon application note LA010103). Logging and subsequent review of

the RTCM correction data often resolves performance or compatibility issues.

The development unit should be set up as shown in Figure 4-1 with only the RTCM correction

source connected to the receiver. If the RTCM cable is not connected to the receiver’s auxiliary

port, DGPS operation will not be possible. When RTCM data is being received the AUX LED will

be lit.

Note: the development unit may be connected to either the COM1, COM2, COM3, or COM4

serial ports and the RTCM differential correction data source connected either directly to

the receiver’s auxiliary I/O port, to one of the remaining serial ports of the PC, or to both

using an OEM-supplied three-connector serial cable.