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
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
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.
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
RTC(Battery) Power
BATTERY
2.0
5.0
15
µA
Specification
1. Chip Set
uBlox 5
2. Antenna
Sarantel S-Type
3. Receiver Type
50 Channel
GPS L1 frequency, C/A Code
GALILEO Open Service L1 frequency
4. Time to First Fix
Cold Start (Autonomous)
Warm Start (Autonomous)
Hot Start (Autonomous)
Aided Start
29s
<1s
5. Sensitivity
Tracking & Navigation
<-160 dBm
<-144 dBm
6. Horizontal Position
Autonomous
SBAS
<2.5m
<2.0m
7. Accuracy of Timepulse Signal
RMS
99%
30ns
<60ns
8. Max Navigation Update Rate
4Hz
9. Velocity Cccuracy
0.1m/s
10. Heading Accuracy
0.5 degrees
11. Dynamics
<15g
12. Power
3.3V+-5% DC input, <50mVpp
13. Interface
Baud Rate
Connector Type:Panasonic AXK6F10547YG
9600
14. Enviornmental
Operating Temp
-10~50 ℃
15. AGPS
Support uBlox AssistNow
Designed by Web Builder & Trade Associated with AsianNet
