Pathfinder DVL Guide April 2018
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Page 61
4. If all this works up to this point and you have a high baudrate then go to Test > FFT (HL) > Go
to turn the FFT spectrum analyzer mode on each beam:
• Anything that looks different in overall shape or spikes anywhere that show on the light blue line
(realtime FFT) is of concern even more when it shows on the dark blue line (averaged FFT).
• Note that you can click on any beam to Zoom on it if this helps.
• The way to ‘collect’ FFT data with QCMon is to take snapshots in different scenarios, such as take
one for baseline in water with the vehicle ON but no active sensors, arms, thrusters, (or even us-
ing a known cleaner external power source) then take a snapshot for each of the major vehicle
components* turned ON to active mode.
• * anything that is powered on the vehicle and can be placed into an active mode (which usually
means either or both driving more current or creating EMI or Acoustic pulses)
• It is also advised to do the same with the DVL Built-in test and go back to the terminal and send
PT200 for each of these scenarios. To do so Go To Test > STOP then Go To Comm > Termi-
nal and then send PT200. Same as the FFT, you will have to take snapshots for each scenario.
Matlab Output Variable Definitions
The following includes a basic definition of the Matlab output variable definitions from WinADCP. If fur-
ther clarification is needed please Contact TRDI Field Service.
AnBIT – Built in test
AnBATT – Battery level
AnDepthmm –Depth in mm
AnH100thDeg – Heading to 1/100
th
of a degree
AnOrienUP – Up/down orientation
AnP100thDeg – Pitch rotation to 1/100
th
of a degree
AnR100thDeg – Roll rotation to 1/100
th
of a degree
AnT100thDeg – Yaw rotation to 1/100
th
of a degree
RDIBin1Mid – Distance to middle of Bin 1
RDIBinSize – Bin Size
RDIEnsDate – Ensemble start date
RDIEnsInterval – Ensemble Interval
RDIEnsTime – Time per Ensemble (te command)
RDIFileName – File name and directory
RDIPingsPerEns – Pings per ensemble (wp command)
RDISecPerPing – time per ping (tp command)
RDISystem – type of system
SerBins – bin association
SerC1cnt – Beam 1 correlation
SerC2cnt – Beam 2 correlation
SerC3cnt – Beam 3 correlation
To Next Page
Loading...