Garmin GPS 16x 010-00258-63 用户手册

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GPS 16x Technical Specifications  
Rev. B 
Page 5 
1.5.4  GPS Performance 
1.5.4.1 
Receiver  
 Enabled
®
 GPS receiver continuously tracks and uses multiple satellites to compute and update your position. 
1.5.4.2 
Acquisition Times 
•  Reacquisition:  Less than 2 seconds 
•  Hot: 
 
Approx. 1 second (all data known) 
•  Warm:   
Approx. 38 seconds (initial position, time, and almanac known; ephemeris unknown) 
•  Cold:  
Approx. 
45 
seconds 
1.5.4.3 
Sentence Rate 
1 second default; NMEA 0183 output interval configurable from 1 to 900 seconds in 1-second increments 
1.5.4.4 
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), 3g dynamics 
1.5.5  Interfaces 
•  True RS-232 output, asynchronous serial input compatible with RS-232 or TTL voltage levels, RS-232 
polarity. 
•  User selectable baud rate: 4800, 9600, 19200, or 38400. 
1.5.5.1 
Port 1 
•  Configurable between NMEA 0183 Versions 2.00 (factory default) 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
 for full protocol specifications) 
o
  Position, velocity, and time 
o
  Receiver and satellite status 
o
  Differential Reference Station ID and RTCM Data age 
o
  Geometry and error estimates 
•  NMEA 0183 Inputs (see section
 for full protocol specifications) 
o
  Initial position, date, and time (not required) 
o
  Earth datum and differential mode configuration command, PPS Enable, GPS satellite almanac 
•  Configurable for binary data output 
1.5.5.2 
Port 2 
Real-time Differential Correction input (RTCM SC-104 message types 1, 2, 3, 7, and 9)