Build on high performance, low-power SiRF star III chipset
Extreme fast TTFF (the time to first fix) at low signal level
20 ¡Vchannel GPS receiver
SBAS (WAAS, EGNOS Euro Geostationary Navigation Overlay Service) support
Full navigation accuracy provided by Standard Positioning Service (SPS)
Reception frequency 1575.42MHz
CPU (ARM7TDMI) with 4Mb of internally packaged Flash memory
Advanced Power Management. (The mode of low power management when signal levels areless than 30dB Hz. Update rates arelimited from 10 seconds to 255 seconds.)
2 UARTS, high speed serial bus
Support standard NMEA 0183 protocol (Version. 3.0 GGA, GSA, GSV, RMC, VTG)
Internal RTC (Real Time Clock)
Build-in +3~5V DC converter
Shielding case including
Driver / Manual / Specification
Performance
Acquisition time (open sky and stationary)
Reacquisition
Average 0.1 sec
Hot start
< Average 1 seconds
Warm start
< Average 38 seconds
Cold start
< Average 42 seconds
Accuracy
Position
10 meters RMS without SA
Velocity
0.1 meters/second, without SA
Time
1 microsecond synchronized to GPS time
Datum
WGS-84 (or by demand)
Sensitivity
Tracking
-159 dBm (average)
Dynamics
Altitude
< 18000 meter
Velocity
< 515 m/sec
Acceleration
< 4 g
Frequency
L1, 1575.42MHz C/A code
Power Consumption
Under 65mA fully active
Power & Interface characteristics
Serial I/O port
2 UART S, high speed serial bus
I/O Protocol
NMEA 0183 (default)
Baud rate
Default baud rate for SSIII NMEA is 4800 baud. The default serial port settings for SiRF binary mode is 57600, N, 8, 1.
I/O Connector
30- pin type
Physical characteristics
Dimensions
25.4 ( L ) X 25.4 ( W ) X 2.8 ( H ) mm
Weight
4g
Environment conditions
Operating temperature
-20¢XC ~ +80¢XC
Storage temperature
-20¢XC ~ +85¢XC
Operating humidity
5% ~ 95% RH, Non condensing
Assignment of Connector
PIN
Description
1
VCC_IN
+ 3.3V~3.6Vdc power input (System Power)
2
GND
Ground
3
Boot select
Boot selection. Pull high this pin at power on stage for flash programming.
4
RXA
Serial Data input port A
5
TXA
Serial Data output port A
6
TXB
Serial Date output port B for user's application(not currently used).
7
RXB
Serial Date input port B for user's application(not currently used).
8
GPIO14
External GPS system power control , internal pull low. ( must be Low)
9
RF_ON
Indication for RF power supply. Flashes in trickle power mode.
10
GND
Ground
11
GND
Ground
12
GND
Ground
13
GND
Ground
14
GND
Ground
15
GND
Ground
16
GND
Ground
17
RF_IN
GPS signal input
18
GND
Ground
19
V_ANT_IN
+ 3.0V~5Vdc DC power supply for active antenna.
20
VCC_RF
DC power supply for active antenna,2.85V
21
V_BAT
Battery backup input. 2.5V to 3.6V, 10uA typical.
If Backup Battery on board this pin floating.(Option)
22
N_RESET
Reserved for System input reset (Active Low), If not use, this pin floating.
23
GPIO10
General purpose I/O 10
24
GPIO1
General purpose I/O 1
25
GPIO2
General purpose I/O 2
26
GPIO0
General purpose I/O 0
27
GPIO13
General purpose I/O 13
28
GPIO15
LED indicate for GPS status
29
TIMEMARK
1 PPS Time mark output
30
GND
Digital ground
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