SPK-GPS-GS405 SMART ANTENNA (SIRF STARIII) , GPS Receiver module+ Sarantel Geohelix SMP-Passive Antenna

GPS Receiver module+ Sarantel Geohelix SMP-Passive Antenna

1.2. MAIN FEATURES

 Built-in SiRF Star III chipset with standard SiRF GSW 3.0 software

 Built-in Sarantel omni-directional Geo-helix SMP passive antenna, increases GSP

signal reception sensitivity

 Twenty parallel satellites tracking channels for fast acquisition.

 A-GPS ready

 Compact size

 Support NMEA0183 V. 3.01 data protocol.

 TTL level output serial port easily for system on board integration


1.3. KEY BENEFITS

 Integrate GPS antenna and receiver

 Filtering effect of the antenna gives high immunity to RF interface

 High sensitivity GPS solution – Fast TTFF

 Wide antenna Beam width

 Simple integration and acceleration for time-to-market

2. SPECIFICATION

2.1. ABSOLUTE MAXIMUM RATING

Parameter
Min
Typ
Max
Units

Power Supply Voltage
3.1
3.3
3.5
V

Operating Current
67
75
82
mA



2.2. GEOHELIX-SMP GPS ANTENNA CHARACTERISTICS
Parameter Min Typ Max Unit
Frequency 1573.42 1575.42 1577.42 MHz
Gain -5.5 -3.5 dBic
Beamwidth >120 Degrees
VSWR 2.0:1 2.3:1
Impedance 50 Ω
Operating Temperature Range -40 +20 +85 ℃




2.3. GPS TECHNICAL SPECIFICATION
ITEMS DESCRIPTION
Chipset GRF3w&GSP3f SiRF StarIII technology
General Frequency L1, 1575.42 MHz
C/A code 1.023 MHz chip rate
Channels 20
Accuracy Position 10 meters, 2D RMS
5 meters 2D RMS, WAAS enabled
< 5meters(50%), DGPS corrected
Velocity 0.1 meters/second
Time 1 microsecond synchronized to GPS time
Datum Default WGS-84
Other selectable for other Datum
Time to First Fix (Open Sky & Stationary Requirements) Reacquisition 0.1 sec., average
Snap start 1 sec., average
Hot start 8 sec., average
Warm start 38 sec., average
Cold start 42 sec., average
Dynamic

Conditions Altitude 18,000 meters (60,000 feet) max.
Velocity 515 meters/second (1000 knots) max.
Acceleration Less than 4g
Jerk 20 meters/second3, max.

Power Main power input 3.3 ± 5%V DC input.
Power consumption Less than 250 mW (Continuous mode)
Supply Current ≈75 mA (Continuous mode)
Backup Power See section 2.9 PIN DESCRIPTION Pin#7
Serial Port Electrical interface One full duplex serial TTL UART interface.
Protocol messages NMEA-0183@4800 bps (Default)

Timemark-1PPS Pulse(Customization
Device) Level TTL
Pulse duration 100ms
Time reference At the pulse positive edge.
Measurements Aligned to GPS second, 1 microsecond



2.4. EXTERNAL BACKUP POWER CONDITIONS
PARAMETER Symbol Min Typ Max Units
RTC(Battery) Power BATTERY 2.0 5.0 V
Supply Current 15 µA


2.5. SOFTWARE OPERATION CONDITION
ITEMS DESCRIPTION
Core of firmware SiRF GSW version 3.0
Baud rate 4800 (Default)
Code type NMEA-0183 ASCII
Datum WGS-84
Protocol message GGA, GSA, GSV, RMC / per second.
Output frequency 1 Hz

Acquisition Sensitivity Cold start 28 dB-Hz (-143dBm)
Warm start 28 dB-Hz
Hot start (Standard) 15 dB-Hz
Tracking -159 dB



2.6. COMMUNICATION SPECIFICATION
PARAMETER SPECIFICATION
Interface Simple UART
Bit rate 4,800 bps
Start bit 1 bit
Stop bit 1 bit
Data bit 8 bit
Parity None
Transmission data NMEA 0183 Ver3.01





2.7. ENVIRONMENTAL CHARACTERISTICS
ITEM MINIMUN MAXIMUM
Operation conditions -40℃ +85℃
Storage conditions -55℃ +100℃

* Operation humidity: 5 % to 90 % No condensing.


2.8. OTHER CHARACTERISTICS
ITEMS DESCRIPTION
Physical
Characteristics Length (with Antenna) 52mm (2in)
Width 25.6mm (1in)
Weight ≈16g