 | Navman presenta il nuovo Chipset denominato Jupiter 30. Le sue caratteristiche, come vedremo nelle specifiche tecniche, sono molto interessanti e concorrenziali. Il SiRF STAR III ha forse trovato un degno rivale?
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Ecco le specifiche:
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, up to 500 m/s
acceleration, up to 5 G
Tracking capability
20 satellites simultaneously
Accuracy
horizontal accuracy: better than 2.89 m (CEP), 5.2 m (2 dRMS)
PPS accuracy: typically better than 1 µs
Acquisition/reacquisition performance
@ -125 dBm
hot start TTFF: <1s (95%), 500 ms (typ) valid almanac, time, position and ephemeris
warm start TTFF: 38 s (95%), 32 s (typ) valid almanac, time and position
cold start TTFF: 42 s (95%), 34 s (typ) valid almanac
@ -140 dBm
hot start TTFF: <1s (95%), <1s (typ) valid almanac, time, position and ephemeris
warm start TTFF: 59 s (95%), 49 s (typ) valid almanac, time and position
cold start TTFF: 66 s (95%), 52 s (typ) valid almanac
Antenna input
integral LNA for use with passive antenna
active antenna powered through receiver (100 mA max at 12 VDC max)
Environmental
operating temperature: –40°C to +85°C
humidity: up to 95% non-condensing
altitude: –305 m to 18 000 m
Physical
dimensions: 25.4 x 25.4 x 3.0 mm
weight: 4 g
On-board filtering
L1 –75 MHz, –30 dB
L1 +50 MHz, –20 dB
Data interfaces
two serial ports available
6 GPIOs
CMOS-level (3.3 VDC)
selectable baud rates
selected NMEA-0183/SiRF binary messages: latitude, longitude, elevation, velocity, heading, time, satellite tracking status, command/control messages
SiRF binary interface: raw data
Electrical
input power range: 3.0 to 3.6 VDC
battery backup current: 5-6 µA (typ) for 1.9 to 3.6 VDC (SRAM and RTC)
power consumption:
Connectors
data/power: RF through surface mount pads
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