|
Feature
|
Item
|
Description
|
|
Chipset
|
GSC3f
|
SiRF StarIII low power single chipset
|
|
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 corrected
|
|
<5meters (50%)
|
|
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 (TTFF) (Open Sky & Stationary Requirements)
|
Reacquisition
|
0.1 sec., average
|
|
Snap start
|
1 sec., average
|
|
Hot start
|
1 sec., average typical TTFF
|
|
Warm start
|
38 sec., average typical TTFF
|
|
Cold start
|
42 sec., average typical TTFF
|
|
Dynamic
Conditions
|
Altitude
|
18,000 meters (60,000 feet) max.
|
|
Velocity
|
515 meters/second (1000 knots) max.
|
|
Acceleration
|
4g, max.
|
|
Jerk
|
20 meters/second3, max.
|
|
Power
|
Main power input
|
3.3 ~ 5.0 VDC input
|
|
Power consumption
|
≈165 mW (continuous mode)
|
|
Supply Current
|
≈49 mA
|
|
Backup Power
|
1.65 ~ 5.0 VDC input
|
|
Serial Port
|
Electrical interface
|
Two full duplex serial TTL interface
|
|
Protocol messages
|
NMEA-0183@4800 bps (Default)
|
|
Time-1PPS
Pulse
|
Level
|
TTL
|
|
Pulse duration
|
The 1PPS pulse width is 1μs, this 1PPS is NOT suited to steer various oscillators (timing receivers, telecommunications system, etc.)
|
|
Time reference
|
At the pulse positive edge.
|
|
Measurements
|
Aligned to GPS second, ±1 microsecond
|
