J3,30DK,00,3.5 Navman Wireless, J3,30DK,00,3.5 Datasheet - Page 7

• Manufacturer Part Number: J3,30DK,00,3.5
• Description: DEV KIT FOR JUPITER 3 AND J3-30
• Manufacturer: Navman Wireless
• Type: Receiver, GPSr

Specifications of J3,30DK,00,3.5

• Frequency: 1575.42MHz
• For Use With/related Products: Jupiter 3, J3-30
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 943-1006

Jupiter 3-30
3.4 Power management
The Jupiter 3-30 offers two power saving modes: Adaptive TricklePower and Push-To-Fix, which can be set using NMEA or
SiRF Binary messages.
For further information refer to the Navman Low Power Operating Modes application note (LA000513), Navman NMEA
reference manual (MN000315) and the SiRF Binary Protocol reference manual.
3.5 Differential aiding
3.6 Core processor performance
The standard Jupiter 3-30 with GSW3 software runs at a CPU clock speed of 49 MHz. An SDK (Software Development Kit) is
available from SiRF to customise the Jupiter 3-30 firmware.
3.4.1 Adaptive TricklePower
The Jupiter 3-30 can use the Adaptive TricklePower (ATP) feature, which reduces power consumption by
intelligently switching between full power in tough GPS environments and low power in strong GPS signal areas.
When signal levels drop, the receiver returns to full power so that message output rates remain constant. This results
in variable power savings but much more reliable performance for a fixed output rate. Applications using ATP should
give performance very similar to full power, but with significant power savings in strong signal conditions.
ATP is best suited for applications that require solutions at a fixed rate as well as low power consumption and still
maintain the ability to track weak signals.
With ATP at a 1 second update, a power saving of 50% can easily be achieved with minimal degradation in
navigation performance.
3.4.2 Push-To-Fix mode
Push-To-Fix mode always forces the GPS software to revert to a continuous sleep mode after a navigation position
fix. It will stay in sleep mode until woken by activation of the WAKEUP input (pad 26) to compute a fresh position.
If the ephemeris data become invalid, the RTC has the ability to self activate and refresh the data, thus keeping the
restart TTFF very short.
This mode yields the lowest power consumption of the module, and is ideal where a battery powered application
requires very few position fixes.
3.5.1 Differential GPS (DGPS)
DGPS is not available on the Jupiter 3-30.
3.5.2 Satellite Based Augmentation Systems (SBAS)
The Jupiter 3-30 is capable of receiving SBAS differential corrections including WAAS and EGNOS. SBAS improves
horizontal position accuracy by correcting GPS signal errors caused by ionospheric disturbances, timing and satellite
orbit errors.
Navman Wireless OEM Solutions • 27171 Burbank -Suite 200; Foothill Ranch, CA 92610-2501
TEL: +[phone] • FAX: +[phone] • www.navmanwirelessoem.com
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Datasheet
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