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SeaView SVS-603HR User Manual

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SVS-603HR WAVE SENSORS USER
MANUAL FIRMWARE 2.4+
October 2022
Version 1.67

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  • Page 1 SVS-603HR WAVE SENSORS USER MANUAL FIRMWARE 2.4+ October 2022 Version 1.67...

  • Page 2: Table Of Contents

    Determine the Mounting Location of the Sensor in the Buoy ..........10 Sensor Orientation.........................11 Plan for the Power and Data Connections for the SVS-603HR ..........11 CHAPTER 3: PREPARING TO INSTALL THE SVS-603HR ............14 DANG Correction for the Sensor's Deployment Location – FIRMWARE 1.96 ......14 Setting Declination Angle using DECLINATION Parameter –...
  • Page 3 Considerations Regarding Different Formulations for Wave Period and Recommended Outputs ..........................97 How is Wave Direction Calculated? ..................99 In What Type of Buoy Does the SVS-603HR Work? ............100 Proximity to Ferrous Metals and Magnetic Interference ............100 CHAPTER 15: RESPONSE AMPLITUDE OPERATOR FORMULATIONS AND INPUTS ..102 Inputs to the SVS-603HR RAO Model .................
  • Page 4 APPENDIX A: DEPLOYMENT DETAILS WORKSHEET ............119 Pre-Deployment ........................119 Post-Deployment ......................... 120 APPENDIX B: SEAVIEW SYSTEMS’ WARRANTY POLICY ........... 121 APPENDIX C: FIRMWARE UPDATE INSTRUCTIONS ............122 Installing the Latest Firmware ....................123 Setting the License Key ....................... 125 APPENDIX D: FIRMWARE RELEASE NOTES ...............

  • Page 5: Chapter 1: Introduction To The Svs-603Hr Wave Sensor

    The latter possibility makes the SVS-603HR a useful tool for testing new wave analysis algorithms or for back testing algorithms against historical data generated and saved to the on-board logger.

  • Page 6: Physical Configuration Of The Svs-603Hr

    Note that all of the active ports and contacts of interest are located on the upper surface of the circuit board which is marked as shown above with the SeaView Systems logo. There are no connection points or other user-accessible features on the back side of the circuit board.
  • Page 7 The following table shows the amount of torque to be applied to the fasteners should you choose to reverse the position of the connector and plug. Torque (N⋅m) Fastener 0.36 – 0.39 Lid screws 27 – 40 Connector/Plug SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 8: Svs-603Hrb

    SVS-603ME, the reference direction can be determined based on the orientation of the SeaView logo. It is important that this reference orientation is lined up in the same direction for an external compass module for consistency.
  • Page 9 SD card for some enclosures (including the SVS-603ME). • The SVS-603HRb board has a built-in updater board. The SVS-603HRb is shown in the following photos: Built-in updater board Watch battery SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 10: Chapter 2: Svs-603Hr Mounting Guidelines

    Please consult with SeaView as to whether this model should be invoked based on your buoy configuration.

  • Page 11: Sensor Orientation

    The SVS-603HR accepts supply power voltage from levels in the range of 5 to 30 Volts DC. (Please note well: For voltages between 4.5 and 5 volts, some operations, most notably the micro- SD card write, will not perform reliably even though the board otherwise appears to function normally –...
  • Page 12 Plan to provide power to the SVS-603HR via either the USB port or via the terminals on the serial port shown in the schematic shown previously and labeled “0V” for ground and “+V” for the positive supply voltage. Note well: The power inputs via the serial port of the SVS-603HR are not reverse polarity protected so caution should be exercised when connecting power to this port.
  • Page 13 SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 14: Chapter 3: Preparing To Install The Svs-603Hr

    CHAPTER 3: PREPARING TO INSTALL THE SVS-603HR The following gives a brief overview of the suggested steps for preparing the SVS-603HR for installation. Before installing the sensor, typically on a buoy, determine the placement of the sensor within the buoy hull. It is advised to mount the sensor as close as practical to the roll center of the buoy (typically in the center of mass of the buoy horizontally and near and just below the waterline).

  • Page 15: Setting Declination Angle Using Declination Parameter - Firmware 2.0

    DECLINATION. So, for the example above, the declination angle for Ann Arbor is -6.97 and this value should be set for DECLINATION. NOTE WELL: this is the opposite sign convention to the declination correction input using the DANG parameter as described above. SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 16: Install A Micro-Sd Card

    Connect the Sensor to a Host Computer In order to configure the SVS-603HR, it is necessary to connect it with a host computer from which you can issue commands to change settings on the sensor board. This can be done via either the serial port or the micro-USB port of the sensor.

  • Page 17: Connecting Via Serial Port - Svs-603Me Marinized Enclosure

    DB9 (PC) contacts appear as shown in the following diagram: Note well: The power inputs via the serial port of the SVS-603HR are not reverse polarity protected so caution should be exercised when connecting power to this port.
  • Page 18 The diagram below shows the connections between the SVS-603HR and your data logger or serial port with colors based on the connecting whip typically sent with the sensor. NOTE: The wiring diagram for sensors with serial numbers 603HR121, 603HR122, 603HR123, 603HR125, 603HR133 and 603HR134 is not as shown below.
  • Page 19 If you use Tera Term, for example, which is an open-source terminal utility, you'll need to start the Tera Term application, select “Serial” from the dialog that appears, and then select the “Com Port” to which the serial connection has been made to the SVS-603HR from the “Port” pull-down menu as shown in the figure below: SeaView Systems, Inc.

  • Page 20: Connecting Via Micro-Usb Port

    In order to connect to the sensor via USB, you will need to download and install the program SVS603_USB_Driver.exe which adds a driver for the SVS-603HR to your host computer. Please contact SeaView for a link to download this software.
  • Page 21 USB devices only). Such cables will power the SVS-603HR, causing the LED to light but will not transmit data to the SVS-603HR. Be sure you are using a data-enabled cable! Also, please note also that some USB ports will deliver only a marginal voltage via USB cable.
  • Page 22 5 to 30V) to the power terminals on the serial port as a way to ensure that the SVS-603HR has been supplied the required voltage. To reduce processing time, be sure to turn off any USB outputs you may have enabled while setting up your sensor before your deployment.

  • Page 23: Chapter 4: Installing And Using The Svs-603 Graphical Display

    CHAPTER 4: INSTALLING AND USING THE SVS-603 GRAPHICAL DISPLAY Another way of accessing the SVS-603HR via the com port is using the utility “SVS-603 Graphical Display” which will be provided to you by SeaView. (The capabilities of this utility are an active area of development so check with SeaView to understand the latest capabilities.
  • Page 24 “File” menu and then the “Connect” and “COM” (note that even if you have connected to the SVS-603HR via USB, it will be seen as a serial COM port) menu items as shown in the upper left part of the image above.
  • Page 25 Other fields which are read-write, such as LPF Cutoff, the three output hex codes and others, appear as text over a white box. For these fields, you can enter a SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 26 (if supported by and will only update when the “raw” data stream is enabled. To your sensor configuration) activate and disable the “raw” sensor output, click the “Activate Raw Output” and “Disable Raw SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 27 U is Up acceleration in earth reference frame p is angular velocity about sensor x axis q is angular velocity about sensor y axis r is angular velocity about sensor z axis SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 28 When the sensor is in “RAW” mode, selecting the “Orientation Time Series” tab will display these parameters as a time series as shown in the following image: SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 29 When the sensor is in “RAW” mode, selecting the “Acceleration Time Series” tab brings up a display of three-dimensional accelerations like that shown in the image below: SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 30 This data is produced only after a complete sample set of data for the SVS-603HR has been completed so it may initially appear blank. When the sample set measurements are completed, there will be a short pause (on the order of about 3 seconds) while the spectrum is calculated and a longer delay (on the order of 15 seconds) as the spectrum data is output.
  • Page 31 As with the displacement FFT, this data is produced only after a complete sample set of measurements has been completed so it may initially appear blank. An example is shown below: SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 32 Once you have completed the testing with the SVS-603 Graphical Display, click the button labeled “Disable Raw Output” to disable the raw data stream and return the sensor to one of the operational modes, Summary, Sampling, or Polling, as described later in this document. SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 33: Chapter 5: Output Modes Of The Svs-603Hr

    CHAPTER 5: OUTPUT MODES OF THE SVS-603HR The SVS-603HR supports a wide variety of formatting and data options in its output streams. For the most common output provided by the serial port (or as also available via the USB port), the sensor can operate in four basic modes.
  • Page 34 To enable summary mode for the USB port. use the command: set summaryusb 1 or Activate USB Summary button and for the serial port with the command: SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 35 0 and set summaryusb 0 or Activate USB Sampling button To enable sampling mode for the serial port, use the commands: set raw 0 and set polling 0 and SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 36 NOTE: Sampling mode remains for legacy reasons but as of firmware 2.0, it is recommended to turn on the dynamic sampling output (see Chapter 11) instead of sampling mode and have the sensor in summary mode. SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 37: Chapter 6: Configuring The Svs-603Hr

    CHAPTER 6: CONFIGURING THE SVS-603HR The SVS-603HR contains a wide range of control and configuration options. This section describes some of the more common control and configuration settings and other commands that you might set or check prior to deployment and some operational features of the sensor.

  • Page 38: Check Initial Settings On The Svs-603Hr

    Check Initial Settings on the SVS-603HR The sensor has a number of user-configurable settings. To get a printout of the settings at the time of delivery (and subsequently) you can enter the command get all or press the Get all button in the GUI...

  • Page 39: Determine And Set Configuration Settings On The Sensor Board

    The SVS-603 GUI includes the capability to set the SVS-603HR’s real-time clock by simply syncing it with the host computer's clock with a single push-button operation.
  • Page 40 Tstep (seconds) = (interval (microseconds)) x (avr) The sensors used on the SVS-603HR sample at a rate that is too fast to be of practical interest for most wave statistics. In order to increase accuracy and produce a reasonable sample rate for wave analysis and statistics, the SVS-603HR takes an average over a number of the fast rate samples.
  • Page 41 17.067 0.25 Please observe that the LED on the SVS-603HR board will blink in time with the sampling rate during the defined data point acquisition period, around a 2Hz rate for typical settings. Each time the SVS-603HR completes a sampling set, the light will produce a longer flash, around a second in duration, as the sensor performs the FFT calculation sequence.
  • Page 42 Example: Setting the cutoff frequency for the low pass filter: The SVS-603HR includes a low pass filter that is intended to remove long period waves (long period waves translate to shorter frequencies, hence ‘low pass’) that are outside the range of physically observed periods for a particular deployment site or that are outside the range of interest.
  • Page 43 Lang filter (the default model, as described in reference [2]). The second is SeaView’s proprietary Mean Noise Filter (MNF). Both of these models use energy measured outside of the range of physically expected wave energy and, based on this non-physical energy...

  • Page 44: Setting The X, Y And Z Offsets For A Sensor That Will Be Mounted With Offset From The Buoy Roll Center

    Because SeaView's Mean Noise Filter (MNF) appears to do a better job (with many buoy hulls and with proper input parameters) at removing what appears to be noise from the signal produced by several buoy hulls on which it has been qualified, it can potentially eliminate the need for a hard cutoff period filter and allows the possibility for measuring energies across periods ranging up to about 30 to 35 seconds.
  • Page 45 With the sensor placed away from the roll center of the buoy in a standard orientation with the SeaView logo and electronic components of the board (or the lid of the SVS-603ME marinized enclosure) facing upward,...
  • Page 46 There is no added computational time when including offsets. NOTE: Please contact SeaView Systems if you have any questions about setting these offsets. We are happy to review your settings. Example: Resetting and Restarting the SVS-603HR: It is sometimes useful to reset the sensor (reset the cycle back to zero) or reinitialize and restart the sensor firmware.

  • Page 47: Installing, Removing, And Formatting The Micro-Sd Card

    This will start the sampling cycle over from the beginning. It is sometimes useful to restart the SVS-603HR. This will perform a hard reboot of the system which will reinitialize and restart the sensor firmware and all components. To do this, use the...
  • Page 48 Note that the command to format the SD card can only be executed via the USB port. Sending this command via the serial port will not format the card. SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 49: Automatic Sd Card File Writes

    SeaView recommends writing only the SR files and WA files for the SVS-603HR (hex code 21 which was the default set when you received your sensor). Writing additional files, especially the DS file for directional spectrum, will fill up the card and slow down your processing time.

  • Page 50: Retention Of Settings On The Svs-603Hr

    SeaView in performing diagnostics if needed on a sensor's settings and performance. It is not intended for use by sensor end users. Both of these files should be included with any card data sent to SeaView for support or analysis purposes.

  • Page 51: The Impact Of Sampling Period Duration

    ** freqbins of 128 and dirspeclen of 30 The Impact of Sampling Period Duration If there are power constraints, the SVS-603HR can be operated intermittently by depowering after a sample set has been completed and powering back up when it is time to begin the next sample set.
  • Page 52 To explore this topic, SeaView took advantage of our emulator capability along with buoy library data for an example buoy to determine the impact of changing the duration of the sampling period.
  • Page 53 SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 54 Comparison of 20 Minute Sampling Period with 5 Minute Sampling Period SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 55 Comparison of 20 Minute Sampling Period with 2.5 Minute Sampling Period SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 56 Comparison of 20 Minute Sampling Period with 40 Minute Sampling Period SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 57 SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 58 These spikes could also be reduced by various techniques such as SeaView’s TW algorithm, QARTOD filtering, or controls available with SeaView's proprietary Mean Noise Filter, but as a direct comparison with the longer sampling period durations, it is useful to see the impact of the reduction in sampling period duration.

  • Page 59: Chapter 7: Command Language For The Svs-603Hr

    CHAPTER 7: COMMAND LANGUAGE FOR THE SVS-603HR The following section describes the SVS-603HR configuration setting commands. Most of the commands are the same for both models. Unless noted, the command will apply to both models. Each of these commands can be used in a manner similar to the ones described above to set or poll the various settings for the sensor and to control the various output streams.
  • Page 60 COMMAND: GET DANG/SET DANG or Declination Angle field in GUI for FIRMWARE 1.96 Output magnetic declination angle correction in degrees. /Input magnetic declination angle correction in degrees. Allowed range from -180 to 180. Default value 0.00. SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 61 Default value 0.00. COMMAND: GET BAUDSER/SET BAUDSER Output serial baud rate in BPS for the SVS-603HR / Input serial baud rate in BPS. Allowed range 2400 to 230400. Reboot system to apply. Default value 9600. COMMAND: GET BAUDEX/SET BAUDEX Output serial baud rate in BPS for the SVS-613HR external compass / Input serial baud rate in BPS.
  • Page 62 COMMAND: GET RESETCOUNT/SET RESETCOUNT Output reset counter. / Input value for reset counter. 0 performs no reset, integer value n > 0 performs reset after each nth sample set. Consult with SeaView before modifying. Default value COMMAND: GET EFRAMEXY/SET EFRAMEXY Output eframexy value.
  • Page 63 COMMAND: GET EXTCOMPASS/SET EXTCOMPASS Output current value of extcompass when using the SVS-613HR in tandem with the SVS- 603HR. / Set value of external compass, 0 or 1. Default value 0. Consult with SeaView Systems before modifying. COMMAND: GET EXTCOMPASSTIMEOUT/SET EXTCOMPASSTIMEOUT Output current value of extcompasstimeout when using the SVS-603HR in tandem with an external compass.
  • Page 64 COMMAND: GET PERIODFWMODEL/ SET PERIODFWMODEL Output current value of periodFWmodel. / Set value of periodFWmodel, either 0: boxcar model or 1: triangle model. Default value 0. Consult with SeaView Systems before modifying. COMMAND: GET PERIODMINFAC/SET PERIODMINFAC Output current value of periodminfac. / Set value of periodminfac from 9-99.9. Default value 5.
  • Page 65 Output current value of filtertype. / Set value of filtertype from 0: no filter; 1: Lang filter; 2: Mean Noise Filter. The default value is dependent on when you received your sensor, the buoy hull you are using and the most current information from SeaView’s buoy hull library. Consult with SeaView Systems before modifying.

  • Page 66: Set And Poll Sensor Outputs

    These are discussed fully in Chapter 14 and their values should not be changed without first carefully studying their description or consulting SeaView Systems. Set and Poll Sensor Outputs COMMAND: GET OUTPUTUSB/SET OUTPUTUSB or USB Output Hex code field in GUI Output current hex configuration of selected parameters to USB.
  • Page 67 A keystroke must be entered after each block of data to output the next block of data. The enter/return key is NOT recommended. Default is 0 corresponding to all lines of displacement being output in one block. SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 68 Default is 30 Please note that increasing the number of directions may significantly add to processing and data output time, especially if dirspecusb or dirspecser is enabled. SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 69: Sd Card Commands

    Time Window (TW) Algorithms for Period, Wave Direction, and Mean Wave Direction The SVS-603HR includes the option to apply a time domain filtering algorithm which uses a backward-looking time window to provide a user-controlled amount of filtering to the time series...

  • Page 70: Nmea And Checksum

    The table that follows shows the hex codes used to set the parameters which will be output via the serial and USB output streams from the SVS-603HR. For firmware versions lower than 2.4, please consult SeaView Systems for an older version of this table.
  • Page 71 (accX, accY, accZ) (m/sec^2) (see Chapter 11) AVOID: Use dynamic output instead Roll and pitch angles (degrees) angP,angR (see Chapter 11) AVOID: Use dynamic output instead Angular velocities x,y,z (radians/sec) gryp,gyrq,gyrr (see Chapter 11) SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 72 Current sample number (0 – 2047) index This field always included �� −1 �� * T e formulation: or alternatively, ℯ �� ** Long Crestedness formulation: *** First Order Spread formulation: **** Mean Spreading Angle formulation: SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 73: Descriptions Of Recommended Outputs

    GN and diagnostic parameters 1 and 2 are mostly for internal use by SeaView in diagnosing issues with buoy motion and noise filtering. The expected ranges for these parameters are as follows: DP1 > -0.35 DP 2 < 2 GN < 25 (can vary based on mooring system) In the event of mooring constraints, current or wind-based motion anomalies and other non- idealities, one or more of these parameters will generally spike out of these ranges.
  • Page 74 In general, tilt angle increases as Hs increases. An example histogram of maximum tilt values and a plot of Hs vs maximum tilt from a stable buoy are shown below: SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 75: Usb/Serial Output Format

    GN: This is a factor indicating the value used in the Lang filtering calculation (and in a different form in the SeaView Mean Noise Filter). It is an indicator of how much low frequency noise is present in the system and can be used to gauge platform noise behavior. It can sometimes indicate problems such as mooring constraints and can thus potentially be used for remote diagnosis of such problems.
  • Page 76 (default is 9600). Compare these two BAUD rates. If they do not match, you can either adjust the BAUD rate setting for the serial port to match the sensor 's setting or SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 77 <value> to change the BAUD rate on the SVS-603HR. If the BAUD settings are not correctly aligned the output may be garbled or there may be only the "0" character output. If encountering this situation, you may be able to get successful communications by setting the BAUD rate for your computer or terminal emulator to 9600, the default setting for the sensor.
  • Page 78 <value> is a hex value from 0-6F based on the chart above, with <value> determined in a manner similar to that used to calculate output hex codes as described above. SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 79 1 is the hex code from the table above log wave summary results. As another example, to set the SD card output to log the full set of 4 different file types for the SVS-603HR shown in the table above, use the command: set log 2D where F is the sum of the hex codes for WA, MG and DS and SR, from the table above (hex sum: 1 + 4 + 8 + 20 = 2D).

  • Page 80: Chapter 8: Directional Spectrum

    CHAPTER 8: DIRECTIONAL SPECTRUM The SVS-603HR has four models for calculating direction spectra. To enable directional spectrum output, use the command: set dirspecusb <value> or set dirspecser <value> where <value> is 1 to enable directional spectrum or 0 to disable for the USB and serial ports, respectively.
  • Page 81 SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 82: Sample Directional Spectrum Output

    $PSVSH is the NMEA tag; Period is period followed by 15 direction values (angles) and a checksum. The direction value is the midpoint of that bin (e.g. the first bin is from 0-24 degrees). Serial output: $PSVSD,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000, 0.0000, 0.0000,0.0000,0.0000,0.0000,0.0000,0.0000*42 SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 83 15 angles at that period. There are 128 period lines, corresponding to the (default) value of freqbins. There is a checksum at the end of every line. For some parameters that are calculated at the conclusion of each sampling set, SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 84: Chapter 9: Energy Spectrum

    Fourier coefficients and a checksum. Serial output: $PSVSS,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000, 0.0000,0.0000,0.0000*67 $PSVSS,1024.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.00 00,0.0000,0.0000,0.0000*50 $PSVSS,512.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.000 0,0.0000,0.0000,0.0000*61 $PSVSS,2.9425,-0.4342,4.1820,1.3674,-1.1939,4.9341,-1.1273,5.0612,- 0.2126,0.8691,-0.1876,0.9049,0.4487*47 $PSVSS,2.9341,4.0281,1.1116,-0.9598,-1.5150,-0.3000,-4.9745,4.9837,- 0.2158,0.8695,-0.1905,0.9124,0.4444*68 where $PSVSS is the NMEA tag and the remaining values are as described above. SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 85: Chapter 10: Displacement Time Series

    NOTE: when BLOCKSIZE has been set to a non-zero value, the NMEA identifier for the displacement time series output uses an abbreviated identifier which does not include the PSVS characters. The displacement time series outputs index rather than time in the first data column. SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 86: Calculating Integrated Vertical Displacement

    For some applications, it may be useful to determine the integrated upward vertical motion for the platform on which the SVS-603HR is mounted. This can be obtained from the displacement timeseries output with modest processing or it can be determined from the available summary outputs.

  • Page 87: Chapter 11: Dynamic Sampling Output (Firmware 2.0+)

    CHAPTER 11: DYNAMIC SAMPLING OUTPUT (FIRMWARE 2.0+) Versions 2.0 and later of the SVS-603HR firmware include a new sampling output stream called dynamic output. This stream includes only those outputs that vary at the user-specified sampling rate for the sensor such as accelerations, rate gyros, pitch, roll, and yaw.
  • Page 88 $PSVDY is the NMEA tag for dynamic output and the remaining values are as described above. SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 89: Chapter 12: Testing The Svs-603Hr

    CHAPTER 12: TESTING THE SVS-603HR Once you have configured the wave sensor and installed and formatted a micro-SD card (if using a different SD card than the one the sensor had when it was delivered to you), you can perform a test by moving it in a circular motion while it is powered and connected via the serial or USB port and using the GUI or a terminal emulator like Tera Term.

  • Page 90: Chapter 13: Loading Data From An Sd Card Archive

    CHAPTER 13: LOADING DATA FROM AN SD CARD ARCHIVE The SVS-603HR SD card data can be loaded into the SVS-603 GUI in order to perform basic data plots and review of the data. To load in data from an SD card archive generated by the SVS- 603HR, open the SVS-603 GUI and select the rightmost “Data”...
  • Page 91 When you select the “Add Plot” button on the upper right of the display as shown in the image below, a blank plot will appear. SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 92 DominantPeriodFW on the y-axis and “Date Time” on the x-axis in order to show a timeline of the y-axis parameter. An example showing Hs versus “Date Time” is shown in the image below: SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 93 You can select/deselect multiple parameters to plot on the same axes from the in the Y axes select list by holding down the ‘Ctrl’ key and clicking the desired parameters. Plotting multiple parameters will make a display similar to that shown in the image below: SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 94: Ship Strike Alert

    Evidence of ship strike can also be seen by loading the acceleration (AC) files from SD card data and plotting the maximum acceleration as shown in the figure below: SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 95: Calculating Ship Strike

    3g, or approximately 30m/sec In the sequence of summary output lines, this might appear something like this: $PSVSW,207.81,0.810, ... 7.870,440,9.450,457,17.150,420, 2020-02-11 17:12:16,2048*31 $PSVSW,201.13,0.754, ... 0.571,985,0.210,985,1.210,365, 2020-02-11 17:32:27,2048*19 SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 96 140 x 0.586 (tstep) = 82.04 seconds So, the strike has occurred at about 82 seconds (1:22) after the previous output or: 17:33:49 SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 97: Chapter 14: Algorithms Used In The Svs-603Hr

    CHAPTER 14: ALGORITHMS USED IN THE SVS-603HR An exhaustive review of the fundamentals and algorithms used in the SVS-603HR is beyond the scope of this document. Instead, this section will provide a short overview of some of the techniques that are part of the wave analyses performed by the wave sensor. The curious reader is directed to the references found at the close of this document for more detail.
  • Page 98 If one of these wave fronts, say the 4 second period, is clearly dominant in energy, it will be identified by the algorithms on the SVS-603HR wave sensor and will be output as the Dominant Period (typically using the SeaView proprietary FW algorithm to get the best result). If the energy in this dominant period wave is significantly higher than other wave fronts, the value produced by Average Period Te will be near the value of this wave period also.

  • Page 99: How Is Wave Direction Calculated

    Please consult with SeaView for questions about these considerations for your particular buoy. How is Wave Direction Calculated? The SVS-603HR sensor takes a sample set consisting of a time series of buoy accelerations including accelerations in 3 dimensions, rotation along 3 axes, and magnetometer compass readings along 3 axes.

  • Page 100: In What Type Of Buoy Does The Svs-603Hr Work

    In contrast to previous accelerometer-based wave sensors, which required that the pitch and roll of the buoy hull be small in order to avoid spurious accelerations, the SVS-603HR is able to compensate for pitch and roll movement and remove this from the wave height calculation. In...
  • Page 101 SVS-603HR away from these if practical. One means of checking the presence of these deviation sources is through the use of a needle compass. If a needle compass is thrown off from true readings, then it is likely the SVS-603HR will have poor accuracy too.

  • Page 102: Chapter 15: Response Amplitude Operator Formulations And Inputs

    Commonly considered reference measurements can be from AWAC or other acoustic measurements, as well as reference buoys, but in the absence of such measurements, SeaView has various other techniques which can give at least a draft indication of RAO characteristics.

  • Page 103: Piecewise Linear Rao Function And Inputs

    The piecewise linear RAO function uses paired values of the parameters raovertical and raoverticalper, each of which are arrays that can hold up to 10 values. The array values are set using command syntax: set raovertical <index> <value> and set raoverticalper <index> <value> SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 104: Polynomial Rao Function And Inputs

    RAO frunction. When the value of raoverticaltype has been set to 2, the RAO function is evaluated as a polynomial with order defined as: Polynomial order = (raoverticalsize - 1) SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 105 Note that applying the RAO function will change the calculated values for the Check Factor, CF due to imposed changes to the vertical value without similar change to horizontal value. For help in applying a polynomial RAO, contact SeaView Systems. SeaView Systems, Inc. Copyright 2022...

  • Page 106: Chapter 16: Platform Considerations

    CHAPTER 16: PLATFORM CONSIDERATIONS The SVS-603HR is designed to be used on a wide range of buoy hull and other platforms. It has been calibrated and compared against a variety of reference wave measurement systems on a variety of platforms. But every platform (and, when used, the mooring system for them) is unique so it is important to be aware of some key factors involved in getting good wave measurement results.
  • Page 107 3 meters or less.) For platforms with size that makes this effect a concern, the SVS-603HR includes the capability to apply a Response Amplitude Operator (RAO) to correct this effect. The details of how to calculate the RAO are beyond the scope of this document.

  • Page 108: Platform Resonance

    SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 109: Low Frequency Noise

    For long period waves, the accelerations produced become very small and can disappear in the sensor noise. To address this, the SVS-603HR includes sophisticated algorithms to filter out noise at low frequencies. These include a hard-cutoff high pass filter (similar to the 30 second filter used by Datawell), filtering based on the Lang algorithm developed by NDBC, as well as the possibility to apply a custom RAO in the low frequency range.

  • Page 110: Chapter 17: Notes On Buoy Mooring

    One of the most important details that influences the accuracy of wave statistics generated by the SVS-603HR or any wave sensor is the motion of the buoy or platform on which the sensor is mounted. Producing good wave statistics requires a buoy that moves with the surface of the water.
  • Page 111 Guide to Moored Buoys and Other Ocean Data Acquisition Systems, 1996 and other resources available from DBCP, NDBC and others. SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 112: Chapter 18: Svs-603 Test Results And Accuracy Metrics

    RAO function capability to correct for observed differences between measured and reference data. The table shown below summarizes a reproducibility test performed in SeaView's test facility. This shows the ability and accuracy of the sensor in reproducing similar results over the course of different test runs for which the measurement is expected to be equivalent.
  • Page 113 Please contact SeaView Systems for more details regarding sensor accuracy testing. The figure below shows significant wave height data from a buoy fitted with the SVS-603 which was deployed in a placement within the Great Lakes region of the United States. This shows a comparison between the wave height produced by the SVS-603 and a co-located AWAC sensor.
  • Page 114 Significant Wave Height 4/1/2017 4/2/2017 4/3/2017 4/4/2017 4/5/2017 4/6/2017 4/7/2017 Date SVS-603 AWAC Data courtesy of LimnoTech For more details about co-located comparison data, please consult with SeaView technical support. SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 115: Chapter 19: Using The Svs-603Hr Wave Sensor With The Svs-613Hrc External Compass Module

    In situations where there is ferrous metal or other sources of magnetic deviation near the location where you will be mounting the SVS-603HR wave sensor, it may be advantageous to use an external compass module in order to place it away from the source of magnetic deviation to ensure more accurate compass readings.

  • Page 116: Svs-613Hrc Settings

    613HRC compass and a data logger using Subconn connectors (these are not available directly from SeaView but the SVS-603ME can be fitted with ports threaded to accommodate these connectors). The SVS-613HRC can draw power from the same source as the SVS-603HR as shown in the diagrams above. SVS-613HRC Settings There are three inputs that must be set for the SVS-613HRC, avr, baudser and extcompass.

  • Page 117: Svs-613Hrc Output

    $GPHDT is the NMEA tag followed by the compass output (in degrees), the character ‘T’ and a checksum. The output from the SVS-613HRC is formatted to be received by the SVS-603HR and should interface without modification. SeaView Systems, Inc. Copyright 2022...

  • Page 118: Legal Disclaimer

    LEGAL DISCLAIMER SeaView Systems products should only be used as specified and should not be used in life- sustaining or security sensitive systems for which a malfunction is expected to lead to bodily harm or significant property damage. The use of SeaView Systems products is at the purchaser’s own risk and her/his own responsibility and the determination of fitness for the...

  • Page 119: Appendix A: Deployment Details Worksheet

    APPENDIX A: DEPLOYMENT DETAILS WORKSHEET Pre-Deployment As preparation for any technical support request with SeaView Systems, we strongly recommend preparing the following materials at time of deployment and when practical to access the sensor's SD card following partial or complete deployment for use in possible post...

  • Page 120: Post-Deployment

    • Details for anemometer or other near-deployment wind information Or links to same if available online  • Plots and relevant notes on any specific features observed in the deployment data SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 121: Appendix B: Seaview Systems' Warranty Policy

    24 months from the date of delivery. This warranty shall not apply to any unit or part which, in SeaView Systems’ sole determination, has been installed or used improperly, or has been damaged by accident, misuse or negligence or has been altered or repaired in such a way as to impair performance;...

  • Page 122: Appendix C: Firmware Update Instructions

    SVS-603 blue bootloader board (Note well that the SVS-603 sensor which is the predecessor of the SVS-603HR used an earlier version of the bootloader board that can be identified by its green color. These green bootloader boards CANNOT be used to perform the update function described here on the SVS-603HR board.)

  • Page 123: Installing The Latest Firmware

    4) Install the USB driver using the SVS603_USB_Driver.exe file if you have not previously done so. 5) Connect the Bootloader to SVS-603: In the center of the SVS-603HR circuit board is a connection point consisting of 8 metal pin contacts. The Bootloader board will fit onto these contacts.
  • Page 124 6) Once you have connected the SVS-603 Bootloader board to the SVS-603HR, you should connect the SVS-603HR to the host computer via the micro-USB port on the sensor. Take care in connecting the USB cable as the connection point could be bent by excessive pressure.

  • Page 125: Setting The License Key

    This should complete the firmware update. Sending the command: get version will return the current version number of the firmware operating on the SVS-603HR board. This should correspond with the firmware update version number provided to you by SeaView. Setting the License Key Firmware 2.0 and higher require license keys into order for the wave sensor to function.
  • Page 126 If you are updating from firmware 2.2 or lower, you must issue the command: set imuconfig 0 0 0 to have the orientation settings appear correctly in the GET ALL output The sensor will now be operational. SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...

  • Page 127: Appendix D: Firmware Release Notes

    Improved Z offset formulation Firmware 2.3 • Adds the ability to operate the sensor in any orientation (sensor mounted upside down, on edge, etc). This is controlled by set imuconfig command. (Note well: upgrading SeaView Systems, Inc. Copyright 2022 Confidential: Not for Distribution...
  • Page 128 TmMinus1 as in previous versions). • Established SWTIER (32) and MODELNUMBER (SVS-603HRi) for use in configuration of SVS-603HR OEM wave sensor product. Firmware 2.41 • Adds the ability to change AVR and FFTSIZE inputs for the SVS-603HRi (OEM wave sensor).

  • Page 129: Appendix E: Known Errors And Situations To Avoid

    APPENDIX E: KNOWN ERRORS AND SITUATIONS TO AVOID The system battery used to power the real time clock on the SVS-603HR must be capable of providing power in order for the system to function. In the event of a system failure, one item to check is the system battery which, in rare cases, can fail or can discharge normally over a long period of usage.
  • Page 130 For extreme cases such as this, the SVS-603HR can be provided with the option to connect an external compass module, the SVS-613HR, which can be placed where there is less magnetic interference, such as at the top of the buoy.

This manual is also suitable for:

Svs-603hrb

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