CXD2931R-9/GA-9
Performance
• 16-channel GPS receiver
• High performance 32-bit RISC CPU
• Receiver frequency: 1575.42MHz (L1 band, CA code)
• Reception sensitivity
Tracking sensitivity: –145dBm (typ.) when using the antenna of 25dBi, NF = 2dB and the RF amplifier
with the 25dB gain
∗ Reference data using the Sony's reference board.
This value is not guaranteed, depending on the conditions.
• Time to First Fix (time until initial measurement after power-on)
Cold Start (without both ephemeris and almanac): 27 to 58s
Warm Start (without ephemeris with almanac): 23 to 45s
Hot Start (with both ephemeris and almanac):
6 to 17s
∗ Reference data with elevation angle of 5° or more and no interception environment on Nov., 2001.
Positioning time with 90% possibility.
These values are not guaranteed, depending on the conditions.
• Positioning accuracy
2DRMS: approx. 12m
∗ Reference data with elevation angle of 5° or more and no interception environment.
This value is not guaranteed, depending on the conditions.
• Measurement data update time
1s
• Interfece format
NMEA0183 (4800bps)
• Communication method
Start-stop synchronization
• All-in-view
1575.42MHz
LNA
CXA1951AQ
RF Converter
18.414MHz
TCXO
IF
1.023MHz
CXD2931R-9
16ch GPS Processor
TXD
RXD
GPS receiver system block diagram using the CXD2931R-9
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