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Jupiter 20
GPS receiver module
Data Sheet
Related documents
• Jupiter 20 Integrator’s manual LA000508
• Jupiter 20 Product brief LA000509
• Jupiter Series development kit guide
LA000645
• SiRF Binary protocol reference manual
• Navman NMEA reference manual
MN000315
• Jupiter 20 DR application note LA000433
• Low Power Operating Modes application
note LA000513
LA000507G © 2006 Navman New Zealand. All rights reserved. Proprietary information and specifications subject to change without notice.
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Contents 1.0 Introduction .......................................................................................................4 2.0 Technical description .......................................................................................4 2.1 Product applications ..................................................................................................... 4 2.2 Receiver architecture ...................................................................................................
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5.0 Software interface .......................................................................................... 13 5.1 NMEA output messages ..............................................................................................13 5.2 SiRF binary .................................................................................................................13 5.3 Software functions and capabilities .............................................................................13 6.0 Dead
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1.0 Introduction The Jupiter 20 GPS receiver module is a very small surface mount receiver that is intended as a component for OEM (Original Equipment Manufacturer) products. The module provides a 12‑channel receiver that continuously tracks all satellites in view and provides accurate positioning data. 2.0 Technical description The highly integrated digital receiver incorporates and enhances the established technology of the SiRFstarIIe/LP chipset. It is designed to meet the needs of the m
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2.3 Major components of the Jupiter 20 LNA (Low Noise Amplifier): This amplifies the GPS signal and provides enough gain for the receiver to use a passive antenna. A very low noise design is utilised to provide maximum sensitivity. Bandpass filter (1.575 GHz): This filters the GPS signal and removes unwanted signals caused by external influences that would corrupt the operation of the receiver. RFIC (Radio Frequency Integrated Circuit): The RFIC (SiRFstarII GRF 2i/LP) and related components
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2.8 Environmental The environmental operating conditions of the Jupiter 20 are as follows: temperature: –40ºC to +85ºC humidity: up to 95% non‑condensing or a wet bulb temperature of +35ºC altitude: –304 m to 18 000 m vibration: random vibration IEC 68‑2‑64 max. vehicle dynamics: 500 m/s shock (non‑operating): 18 G peak, 5 ms 2.9 Compliances The Jupiter 20 complies with the following: • Directive 2002/95/EC on the restriction of the use of certain hazardous substances in electrical and
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3.2 Acquisition times Table 3‑1 shows the corresponding TTFF times for each of the acquisition modes. J20 J20S J20D Mode Typ 90% Typ 90% Typ 90% TTFF hot 8 s 12 s 8 s 12 s 8 s 12 s (valid almanac, position, time & ephemeris) TTFF warm 38 s 42 s 38 s 40 s 35 s 40 s (valid almanac, position & time) TTFF cold 44 s 55 s 45 s 56 s 52 s 70 s (valid almanac) re‑acquisition (<10 s obstruction with valid almanac, 100 ms 100 ms 100 ms 100 ms 100 ms 100 ms position, time & ephemeris) Table 3-1: TTF
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3.6 Differential aiding 3.6.1 Differential GPS (DGPS) DGPS specification improves the Jupiter 20 horizontal position accuracy to <4 m 2 dRMS. 3.6.2 Satellite Based Augmentation Systems (SBAS) including WAAS and EGNOS SBAS improves horizontal position accuracy by correcting GPS signal errors caused by ionospheric disturbances, timing and satellite orbit errors. The Jupiter 20 is capable of receiving WAAS and EGNOS differential corrections. Both SBAS and DGPS should improve position accuracy. H
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3.10 Dynamic constraints The Jupiter 20 receiver is programmed to deliberately lose track if any of the following limits are exceeded: Velocity: 500 m/s max 2 Acceleration: 4 G (39.2 m/s ) max 3 Vehicle jerk: 5 m/s max Altitude: 18 000 m max (referenced to MSL) 3.11 Position and velocity accuracy The position and velocity accuracy of the Jupiter 20 are shown in Table 3‑4, assuming full accuracy C/A code (Clear/Acquisition). These values are the same in normal operation and when TricklePo
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4.1.4 External antenna voltage DC power is supplied to the external antenna through the antenna power input pad (VANT). The receiver does not use this supply. The DC supply to the RF connection does not current limit in the event of a short circuit. Reference designs for antenna current limit are available in the Jupiter 20 Integrator’s manual (LA000508). The external antenna characteristics are as follows: voltage (typ): 3.3 V voltage max: 12 V current max: 100 mA Warning: if the antenna or
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4.2 Data input output specifications All communications between the Jupiter 20 receiver and external devices are through the I/O surface mount pads. These provide the contacts for power, ground, serial I/O and control. Power requirements are discussed in Section 4.1. 4.2.1 Voltage levels The I/O connector voltage levels measured at PWR_IN = 3 V are shown in Table 4‑3. Signal Parameter Value V (min) 2.0 V IH V (max) PWR_IN +0.1 V IH V (min) 0.1 V IL TXD & RXD V (max) 0.8 V IL GPIOs V (min) a
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Pad Name Type Description No. 1 PWRIN P main power input (3.3 V) 2 GND P ground serial boot (high for serial boot, low or open circuit for 3 BOOT I normal operation) 4 RXA I CMOS level asynchronous input for UART A 5 TXA O CMOS level asynchronous output for UART A 6 TXB O CMOS level asynchronous output for UART B 7 RXB I CMOS level asynchronous input for UART B GPIO3/ general purpose IO/ 8* ADC_CONV/ IO output for external A/D converter control/ NANT_SC antenna short circuit sensor input (ac
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5.0 Software interface The host serial I/O port of the receiver’s serial data interface supports full duplex communication between the receiver and the user. The default serial modes are shown in Table 5‑1. J20 J20S J20D Port (GSW2.3) (XTrac) (SiRFDRive 1.0) Port A NMEA, 9600 NMEA, 9600 NMEA, 9600 Port B RTCM, 9600 SiRF binary, 38 400 RTCM, 9600 Table 5-1: Jupiter 20 default baud rates 5.1 NMEA output messages The output NMEA (0183 v2.2) messages and intervals for the receiver are listed in Tab
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Table 5‑3 shows the software features available with the Jupiter 20 configurations. Feature Description J20 J20S J20D GSW2.3 XTrac SiRFDrive Improves position accuracy by using freely available SBAS capability satellite‑based correction services called SBAS (Satellite A A Based Augmentation System) DGPS ready Accepts DGPS corrections in the RTCM SC‑104 format E E Improves battery life using this enhanced power management TricklePower A A mode Adaptive Intelligently switches between TricklePow
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7.0 Jupiter 20 development kit The Jupiter 20 Development kit series assists in the integration of the Jupiter 20 module in custom applications. The Development kit contains all of the necessary hardware and software to carry out a thorough evaluation of the Jupiter 20 module. Refer to the Jupiter Series Development kit guide (LA000645) for further details. The following development kits are available for Jupiter 20 products: • TU10‑D057‑400 Jupiter 20 Development kit RoHS • TU10‑D057‑401 J
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9.0 Product handling 9.1 Packaging and delivery Jupiter 20 modules are shipped in Tape and Reel form. The reeled modules are shipped with 250 units per 300 x 44 mm (D x W) reel with a pitch of 32 mm. Each reel is ‘dry’ packaged and vacuum sealed in an MMB (Moisture Barrier Bag) with two silica gel packs and placed in a carton. The MOQ (Minimum Order Quantity) for shipping is 250 units. All packaging is ESD protective lined. Please follow the MSD and ESD handling instructions on the labels of
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10.0 Ordering information The part numbers of the Jupiter 20 variants are shown in Table 10‑1. Part Number Description TU20‑D411‑001 Jupiter 20 (standard) TU20‑D411‑101 Jupiter 20S (with XTrac) TU20‑D421‑201 Jupiter 20D (with Dead Reckoning) TU20‑D101‑001 Jupiter 20 std adapter TU10‑D007‑400 Jupiter 20 std development kit TU10‑D007‑401 Jupiter 20S development kit TU10‑D007‑402 Jupiter 20D development kit Table 10-1: Jupiter 20 ordering information 11.0 Glossary and acronyms 2dRMS: twice distance
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SiRF and SiRF logo are registered trademarks of SiRF Technology, Inc. SiRFstar, Push‑to‑Fix, and TricklePower are trademarks of SiRF Technology, Inc. All other trademarks mentioned in this document are property of their respective owners. © 2006 Navman New Zealand. All Rights Reserved. Information in this document is provided in connection with Navman New Zealand (‘Navman’) products. These materials are provided by Navman as a service to its customers and may be used for informational purpose
