indicates if computer clock is advanced or retarded compared to reference clock.
Hypack nmea 0183 output driver#
a Last Updated 12/11 1-5ġ2 GPS.dll Driver Setup Format SYN dn t n rt vt vs se fa pa pa Phase adjustment factor in microsec/ sec. indicates how fast or slow the computer clock is compared to reference clock. past midnight vs Veritime status se Filtered Synchronizatin error in msec fa Frequency Adjustment factor in msec. after midnight n number of values to follow rt reference time used for last synchronization in millisec past midnight vt Veritime at last synchronization in millisec.
Hypack nmea 0183 output code#
Binary code with the following bits (other bits are not meaningful) 1 = not in sync 2 = low accuracy synchronization 4 = high accuracy synchronization 8 = synchronization failure computer clock phase adjustment status QUA Format SYN dn t n rt vt vs se fa pa Where dn device number t time tag in sec. Time Synchronization Status synchronization status.
Record Device Specific Messages: Records SYN records. Position Quality Information Format QUA dn t n m h sat mode Where dn device number t time tag (seconds past midnight) n number of values to follow m 10 minus HDOP h HDOP sat number of satellites mode GPS mode (NMEA 0183 standard values) 0 = fix not available or invalid 1 = GPS fix 2 = Differential GPS fix 3 = GPS PPS Mode fix 4 = RTK fix 5 = RTK Float The following 3 values are decoded from GST message: sigman standard deviation of latitude error (meters) sigmae standard deviation of longitude error (meters) semimaj Standard deviation of semi-major axis of error ellipsis (meters) Remaining values are present only if synchronizing computer clock with GPS clock: ref reference time at last sync (milliseconds since midnight) var computer clock at last sync (milliseconds since midnight) syna computer clock frequency adjustment factor (microseconds per sec) syne filtered synchronization error (milliseconds) 1-4ġ1 GPS.dll Format Sample Line QUA dn t n m h sat mode syns synb Record Raw Messages: RAW followed by the NMEA string as it comes from the GPS. degrees), antenna height above ellipsoid, UTC time Last Updated 12/11 1-3ġ0 GPS.dll Device Setup Record quality data: TABLE 1. Use for matrix update: When recording tide as depths so the Depth option is selected, you can use these depth values to paint the matrix in SURVEY. NOTE: If you are using a DGPS, we recommend using a tide gauge or create tide correction files to account for changing water levels. Tide: With RTK GPS, this option generates water level corrections at each GPS position update, based on the separation between the ellipsoid height and chart datum and the separation between the GPS antenna and the echosounder transducer. Select the appropriate message in the driver setup. The GPS speed is much smoother and more accurate than the speed the SURVEY program will calculate. Speed tells the SURVEY program to use the speed information from the VTG or RMC message for the vessel speed. This is because it is unlikely that the two heading values will be exactly the same. If both were selected for heading, the SURVEY program would switch between gyro and GPS orientation as each device updates and you would see the vessel in your SURVEY Map window twitch at each update. BEWARE! If you are using a gyro for heading, you should not select heading for your GPS. Heading tells the SURVEY program to use the Course Made Good from the VTG, RMC or HDT message for the orientation of the vessel. However, it is used in conjunction with the Record Tide as Depth option to, for example, record waterfront depths recorded using land vehicles. Depth is typically unused by GPS devices. Version Number: Device Name: GPS with NMEA 0183 output DEVICE SETUP Position stores position data from this device. If you are using a DGPS, apply tide corrections from a tide gauge or in post-processing using tide correction files. GPS.dll can also calculate real-time tide corrections using data from RTK GPS devices.
Hypack nmea 0183 output drivers#
The GPS device drivers can time-tag data from either RTK or Differential GPS devices. The time- tagging routine obtains accuracy to within 100 microseconds. These drivers include the Veritime time-tagging, accurate to within 1 millisecond and eliminates computer clock drift.
Sonarwiz.dll ħ Positioning Devices Last Updated 12/11 1-1ĩ GPS.dll GPS.DLL We recommend using the GPS device driver for your GPS device. NMEA.dll Last Updated 12/11 5Ħ Table of Contents XIX. SwingInd.dll DRIVERS WITH OTHER FUNCTIONS 171 I. ADCP.dllĥ Table of Contents DREDGEPACK DRIVERS 149 I. TideFile2.dll ENVIRONMENTAL SENSORS 145 I. Nautronix.dll XXIV.OdomCV_3.dll MOTION SENSORS 125 I. Inn455.dll Last Updated 12/11 3Ĥ Table of Contents XIX. Support:ģ Table of Contents POSITIONING DEVICES 1 I. 1 HYPACK Driver Interface Documents 56 Bradley St Phone: 860/ Middletown, CT Fax: 860/ USA Tech.
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