Garmin GPS 16 Series Технические характеристики - Страница 10
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1.7.4
GPS Performance
1.7.4.1 Receiver
WAAS
Enabled™; 12 parallel channel GPS receiver continuously tracks and uses up to 12 satellites (up to 11 with
PPS active) to compute and update your position.
1.7.4.2 Acquisition Times
•
Reacquisition: Less than 2 seconds
•
Warm:
Approx. 15 seconds (all data known)
•
Cold:
Approx. 45 seconds (initial position, time, and almanac known; ephemeris unknown)
•
®
AutoLocate
:
5 minutes (almanac known; initial position and time unknown)
•
SkySearch:
5 minutes (no data known)
1.7.4.3 Sentence Rate
1 second default; NMEA 0183 output interval configurable from 1 to 900 seconds in 1-second increments
1.7.4.4 Accuracy
•
GPS Standard Positioning Service (SPS)
Position:
<15 meters, 95% typical (100 meters with Selective Availability on)
Velocity:
0.1 knot RMS steady state
•
DGPS (USCG/RTCM)
Position:
3–5 meters, 95% typical
Velocity:
0.1 knot RMS steady state
•
DGPS (WAAS)
Position:
<3 meters, 95% typical
Velocity:
0.1 knot RMS steady state
•
PPS Time:
±1 microsecond at rising edge of PPS pulse (subject to Selective Availability)
•
Dynamics:
999 knots velocity (only limited at altitude greater than 60,000 feet), 6g dynamics
1.7.5
Interfaces
•
True RS-232 output, asynchronous serial input compatible with RS-232 or TTL voltage levels, RS-232 polarity.
•
User selectable baud rate: 300, 600, 1200, 2400, 4800, 9600, 19200, or 38400.
1.7.5.1 Port 1
•
Configurable between NMEA 0183 Versions 2.00 and 3.00
•
ASCII output sentences GPALM, GPGGA, GPGLL, GPGSA, GPGSV, GPRMC, GPVTG (NMEA-approved
sentences); PGRMB, PGRME, PGRMF, PGRMM, PGRMT, and PGRMV (Garmin proprietary sentences)
•
NMEA 0183 Outputs (see Section
Position, velocity, and time
Receiver and satellite status
Differential Reference Station ID and RTCM Data age
Geometry and error estimates
•
NMEA 0183 Inputs (see Section
Initial position, date, and time (not required)
Earth datum and differential mode configuration command, PPS Enable, GPS satellite almanac
•
Configurable for binary data output including GPS carrier phase data
1.7.5.2 Port 2
Real-time Differential Correction input (RTCM SC-104 message types 1, 2, 3, 7, and 9)
1.7.5.3 PPS
1 Hz pulse, programmable width, 1 µs accuracy
1.7.5.4 Power Control
•
Off:
Open circuit
•
On:
Ground, or pull to low logic level <0.3 volts
190-00228-21
4.2 Transmitted NMEA 0183 Sentences
4.1 Received NMEA 0183 Sentences
GPS 16/17 Technical Specifications
Page 6
for full protocol specifications)
for full protocol specifications)
Rev. A