Receiver architecture
12-channel, 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 4 G
Tracking capability
12 satellites simultaneously
Accuracy
horizontal accuracy: better than 2.1 m (CEP), 5.2 m (2 dRMS)
PPS accuracy: typically better than 1 µs
Acquisition/reacquisition performance
- hot start TTFF: 8 seconds (typ) valid almanac, time, position and ephemeris
- warm start TTFF: 38 seconds (typ) valid almanac, time and position
- cold start TTFF: 44 seconds (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: –300 m to 18 000 m
Physical
dimensions: 40.6 x 71.1 x 11.5 mm
weight: 4 g
On-board filtering
L1 –75 MHz, –30 dB
L1 +50 MHz, –20 dB
Data interfaces
- two serial ports available (1 for DGPS input)
- 5 CMOS-levels (3.3 VDC)
- programmable 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: 3.1 to 5.5 VDC
power consumption: 75 mA (typ), power saving TricklePower mode available
battery backup power consumption: 10 µA (typ) for 2.5 to 5.5 VDC (SRAM and RTC)
provision for on-board battery backup
Connectors
data/power:20-pin (2 x 10) on 2 mm centres
RF: right angle or straight OSX, or right angle SMB