Jupiter 31

20-channel GPS receiver module

The Jupiter 31 is a 20 channel GPS receiver module based on the Jupiter 21 form. factor that is significantly enhanced to take advantage of the SiRFStar III architecture. The Jupiter 31 offers a substantial increase in sensitivity, faster time to fix, lower power consumption and the option of using either an active or passive antenna.

Navman’s Jupiter 31 GPS receiver module has been designed for low power consumption in reduced signal areas at a very competitive price. The Jupiter 31 normally acquires GPS position under low signal conditions faster than other GPS engines. Tracking continues in areas of dense foliage or built-up inner city environments and even indoors greater than –159 dBm.

Using the new and highly integrated GSC3e/LP from SiRF and carefully selected key components including TCXO, LNA and Flash, the Jupiter 31 offers faster acquisition, a wider operating voltage range and greater noise rejection than leading competitors’ products using a similar architecture.

Key features:

• popular Jupiter 21 form. factor
• low power SiRFStarIII technology
• ultra-high sensitivity , with faster times to fix under most conditions
• 200,000 effective correlators allows for improved indoor fixes and tracking capability
• low power consumption and power management options to further reduce current consumption
• integral LNA with low power control
• SiRFLoc and SiRFInstantFix multimode
• 0.5 PPM TCXO for optimal performance
• user selectable **AS (WAAS, EGNOS and MSAS) support
• environmentally friendly RoHS compliance

Receiver architecture 
20-channel, 200 000 effective correlators, L1 1575.42 MHz
C/A code (1.023 MHz chip rate)
code-plus-carrier tracking (carrier-aided tracking)
velocity to 500 m/s
acceleration to 4 G

Tracking capability
20 satellites simultaneously

Accuracy
horizontal accuracy: 2.2 m (CEP), 5.5 m 2dRMS
PPS accuracy: typically better than 1 µs

Acquisition/reacquisition performance
@ –125 dBm
hot start TTFF, typically: 500 ms 90%: < 1 s
warm start TTFF, typically: 32 s 90%: 38 s
cold start TTFF, typically: 34 s 90%: 42 s

@ –140 dBm
hot start TTFF, typically: <1 s 90%: <1 s
warm start TTFF, typically: 49 s 90%: 59 s
cold start TTFF, typically: 52 s 90%: 66 s

Antenna input
integral LNA for use with passive antenna
active antenna powered through receiver (50 mA max at 12 VDC max)

Datums
supports selection of datums, default: WGS-84

Environmental 
operating temperature: -40^oCto +85^oC
humidity: 95% non-condensing
altitude: –305 m to 18 000 m

Compliance
EMC: FCC – Part 15, class B
EN: 55022, class B

Physical
dimensions: 40.6 x 71.1 x 11.0 mm
weight: 25 grams

On-board filtering
L1 –75 MHz, –30 dB
L1 +50 MHz, –20 dB

Data interfaces
two serial ports available
CMOS-level (3.3 VDC)
selected NMEA-0183/SiRF binary messages: latitude, longitude, elevation, velocity, heading, time, satellite tracking status, command/control messages
SiRF binary data interface

Electrical
input power range*: 3.3 VDC -0.1/+0.3 VDC (5 VDC input power option available. Contact your distributor or Navman Wireless for more information.)

battery backup current: 5 to 6 µA (typ) for 2.85 to 6.0 VDC (SRAM and RTC)

Connectors
data/power: 20-pin (2x10) on 2 mm centres
RF: right angle or straight OSX, or right angle SMB

Jupiter 31 Module

All modules and adaptor boards are now RoHS Compliant.

Part Number  Desciption

AA003041-G  Jupiter 31 with right angle OSX

AA003042-G  Jupiter 31 with straight OSX

AA003043-G Jupiter 31 with right angle SMB