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Discover 4125 users software manual

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1. En SE Time 20 27 10 Heading 347 2 Pitch 1 7 Rol 0 4 Altitude 10 8 Depth Cursor Ping 28834 Mark 51 Free Space 21641 MB Sonar OFF P Lower Control Panels Power OFF Lower indicator Bar OFF Signat NONE The main display window area is split into four resizable sub windows Each displays High or Low frequency Port left side or Starboard right side waterfall data When only one system is active only that sub systems window is shown maximizing the area available Document 990 4125MAN 1001 Rev 1 0 9 EdgeTech 3 1 MENUS 3 1 1 FILE MENU Here you can load configurations or save a configuration FA EdgeTech Discover 4125D Dual Frequency Side Scan File View Configuration Control Help Load Configuration Save Configuration Exit Don t Save Settings Exit Save Settings 3 1 2 CONFIGURATION MENUS The Discover Configuration Settings and other Controls are accessible by selecting the pull down menus at the top of the screen marked Configuration and Control respectively FA EdgeTech Discover 4125D Dual Frequency Side Scan File View Configuration Control Help on Display EE RER gt v Record Printer Navigation External Features Trigger Network S Serial Ports f MEE Ve The Configuration pull down sub menu is shown above Document 990 4125MAN 1001
2. Port OFF Se Baud Rate 9600 Baud Rate 4800 Logical Port zi Used for other NMEA data input Remote sonar serial 1 0 Must match the logical port value as set by the sonar Your screen may look slightly different from this depending on the type of sonar you have but the port setup dialog should look the same The Primary navigation port at least must be setup to correctly receive Time and Positional messages from the GPS The secondary port can be used to supply additional NMEA data such as Gyro heading Event Mark or Heave etc Valid Baud rates are 4800 to 9600 depending on your NMEA source Higher rates are not currently supported The Discover software will support up to 2 serial ports for connecting to any sources of these NMEA serial data strings The messages may come in on any of the 2 enabled ports or they may all be input via one port No distinction or priority is given to any port over another It is safest to only enable those ports you need that are supplying valid data Document 990 4125MAN 1001 Rev 1 0 39 Edgelech DISCOVER 4125 Software 4 4 INPUTS The following are the approved NMEA sentences recommended for use with the DISCOVER based systems 4 4 1 GLL GEOGRAPHIC POSITION LATITUDE LONGITUDE Latitude and Longitude of the present vessel position time of position fix and status GLL xxxx xxx a yyyyyy yyy b hhmmss ss A hh CR LF XXXX
3. X X Floating point numeric T Degrees True M Degrees Magnetic N knots K Kilometer hour NOTE Magnetic heading corrected for local deviation and Easterly Westerly variation would provide more accurate True vessel heading in degrees 4 4 8 ZDA TIME amp DATE UTC day month year and local time zone ZDA hhmmss ss dd mm yyyy l zz hh lt CR gt lt LF gt hhmmss ss Universal Time Coordinated UTC HourslMinuteslSeconds decimal 2 fixed digits of hours 2 fixed digits of minutes 2 fixed digits of seconds and a variable number of digits for decimal fractions of seconds Always pad with leading zeros dd mm Day 01 to 31 I Month 01 to 12 Year Local zone description 00 to 13 hour This field is optional and ignored ZZ Local zone minutes description same sign as local hours This field is optional and ignored NOTES This message is essential to correct system operation as this is used to set the correct time in the data recorded by the Discover application or sent to 3 Party Topsides as well as to correctly set the time of the sonar acquisition application running in the tow fish Document 990 4125MAN 1001 Rev 1 0 42 Edgelech DISCOVER 4125 Software Zone description is the number of whole hours added to local time to obtain GMT Zone description is negative for East longitudes Fix marks are bars across the time zero line in all channels 4 4 9 HDG HEADING DEVIATION AND VARIATI
4. EdgeTech DISCOVER 4125 Software DISCOVER 4125 SIDE SCAN PROCESSOR SOFTWARE Meters 70 60 30 20 BEI Ee eee Towfish Control Video Gains Display Disk Bottom Track Grids Status TrackBottom Detection Threshold 2 238 Holdoff M 024 Tracking Indicator Indicator Offset pixels 02 Tracking range M 2mm C Starboard yback GPS OFF Record OFF MAMII Power LOW ON Mouse Ping 75324 Free Space 1681 MB ATA MANUAL Document 990 4125MAN 1001 Rev 1 0 1 ZE EdgeTech DISCOVER A125 Software Document 990 4125MAN 1001 Rev 1 0 EdgeTech DISCOVER A125 Software INTRODUCTION This manual describes the operation of EdgeTech s Discover sidescan acquisition software as configured for the 4125 sidescan sonar The Discover software is also used in slightly different configurations to support other EdgeTech sidescan and Sub bottom sonar products with a great deal of commonality in functionality and appearance The end user benefits flow directly from this common approach One key element of commonality is a standardized Ethernet based input output for sonar data 1 1 SYSTEM DESCRIPTION The Edgetech Discover based 4125 topside processor may be used with 2 possible system configurations 1 Using a portable Topside 2 Using 19 rack mount topside In the portable configuration the towfish power supply and digital telemetr
5. Edgelech DISCOVER 4125 Software 5 5 1 TARGET INFORMATION Target Information Target Lon Target Lat Altitude Ground Range Slant Range Navigation Lon Navigation Lat Heading Ping Number Target Information 3 53 2658E Target x 543858 35 51 37 5886 N Target Y 2813565 57 26 47 Altitude 29 36 90 95 Ground Ranae 44 08 P 94 72 P Slant Range 52 96 P JASSIE Navigation 643887 20 51 37 6152 N Navigation Y 2813528 70 327 20 Heading 307 36 D Ping Number 0 Target Lon Es Target X Target Longitude or X Position corrected for offsets Target Lat e Target Y Target Latitude or Y Position corrected for offsets Towfish height from seafloor Proper bottom tracking is required to get meaningful Altitude altitude information Ground Range Ground distance between the towfish and the target A P after the range indicates 5 Port Side while an S indicates Starboard Side Actual distance between the towfish and the target A after the range indicates Slant Range Port Side while an S indicates Starboard Side Navigation Lon Navigation X Raw longitude information from GPS or Navigation input Navigation Lat Navigation Y Raw latitude information from GPS or Navigation input Heading Sonar towfish heading at the target location This information is from the heading sensor on the towfish if availa
6. hh Optional Checksum Field lt CR gt lt LF gt OD 0A Terminates Sentence 4 2 PORT PARAMETERS Interface RS 232C Com Port User Choice limited to installed serial ports Baud Rate 4800 9600 Data Bits 8 Start Bits 1 Stop Bits 1 Parity none Handshaking none These are the default parameters and cannot be changed 4 3 PORT SELECTION The port assigned to receive the navigation messages is assigned by the user via the Serial Port Setup dialog window This is access via the Configuration gt Setup pull down menus See the following screen image Document 990 4125MAN 1001 Rev 1 0 38 Edgelech DISCOVER A125 Software File View Configuration Control Help gt u EO O EI S uw Record Printer Navigation Target Logger Trigger Network Serial Ports d MultiPulse Calibration 5 fi r exc rA y game UAA NAI E VAEA Serial Configuration Enable Cable Counter Monitoring Enable Remote COM Port Enable Primary Navigation Input Port OFF x Port OFF Port OFF xi Baud Rate 9600 Baud Rate Baud Rate 4800 Select Port to monitor Cable Counter Logical Port Used for NMEA input of GPS and Navigation Remote sonar serial 1 0 Must match the logical port value as set by the sonar Enable Remote COM Port Enable Secondary Navigation Input Pott mr
7. DISCOVER 4125 Software Candidate Directory Path Use this field to set the directory where the candidate target files are saved The default path is C Targets Candidates Note Candidate files remains in this directory unless saved or deleted 5 4 2 LOG FILE CONFIGURATION Log File Confguration ASCII Logging Column Headers Maptech Output Configuration Parameter Channel Length Width Altitude GroundRange Shadow Length Sonar Position Slant Range v Navigation Offsets Heading ShadowRange V Remarks V Area Pitch Sound Speed Ping Number Height Roll Sensor Speed File Name Meaning or Action Performed ASCII Logging Check this box to enable logging to the Target log selected in the configuration menu Column Headers Check this box to enable the output of column headers to the log file Check this box to enable the generation of the marks32 txt Maptech mark input Maptech Output file Channel Check this box to enable output of channel information e g Port Length Check this box to enable output of measured target length Width Check this box to enable output of measured target width Area Check this box to enable output of measured target surface area Height Check this box to enable output of calculated target height Altitude Check this box to enable output of sonar height from the seafloor Note
8. Proper bottom tracking is required to get meaningful altitude information Sonar Position Check this box to enable output of the raw towfish navigation information before any offset implementation Document 990 4125MAN 1001 Rev 1 0 52 Edgelech DISCOVER 4125 Software Check this box to enable output of Sonar towfish heading at the target location This Heading information is from the heading sensor if present on the towfish Check this box to enable output of towfish pitch at the target location This Pitch D information is from the motion sensor if present on the towfish Roll Check this box to enable output of towfish roll at the target location This information is from the motion sensor if present on the towfish Check this box to enable output of the actual ground distance between the towfish Ground Range and the target Slant Range Check this box to enable output of the distance between the towfish and the target Check this box to enable output of the calculated ground distance between the towfish Shadow Range n and the beginning of the target shadow Shadow Length Check this box to enable output of the measured target shadow length Check this box to enable output of the towfish speed at the location of the target Sensor Speed This information is from the GPS or Navigation input Sound Speed Check this box to enable output of the Sound speed used for
9. V 512 Error Count SR Ambient C 26 6 Activity 2280289 Bottle C 33 6 Diagnostic Not Monitored In the image shown above the system is fully operational with no problems The connection to the towfish is good Other reported data are e Power V nominally 48VDC This is the primary internal supply voltage for the towfish and should be between 44 to 52 VDC e Ambient C This is the internal ambient temperature of the towfish This should be between and 60deg C max A value of 65C and over will prevent correct towfish operation e Bottle C While data maybe displayed use the Ambient for checking the temperature Document 990 4125MAN 1001 Rev 1 0 22 Edgelech DISCOVER A125 Software e Error Count A non zero value is OK but it should NOT BE INCREASING during normal operation If it is it indicates and internal software error or an inadequate telemetry uplink rate e Activity Shows pinging activity counter has no specific meaning but should be changes when pinging Here are some other diagnostic displays with some errors Diagnostic Information Problem Network Configuration Error Diagnostic Not Monitored In this case the software communication between the topside and the towfish has been lost no TCP IP PING connectivity This indicates a network cable problem possibly due to cable unplugged or bad cable from the laptop to the tow fish power supply the tow cable noise excessive length or signal
10. of minutes 2 fixed digits for seconds and a variable number of digits for decimal fractions of seconds Always pad with leading zeros NOTE The hhmmss ss field is optional This format provides for lower accuracy 1 10 m level positions over larger X Y ranges from 99 999 999m to 99 999 990m 4 4 4 GGA GLOBAL POSITIONING SYSTEM FIX DATA Time Position and fix data for a GPS receiver GGA hhmmss ss llll 1l a yyyyy yy a q nn d d a a M g g M e e rrrr hh CR LF Tn Latitude a Character label for N S or E W Longitude q Quality indicator nn Number of satellites in use d d Horizontal dilution Altitude g g Geoidal separation meters e e Age of differential data ITIT Reference Station ID 4 4 5 RMA RECOMMENDED MINIMUM SPECIFIC LORAN C DATA Position course and speed from a Loran C receiver Document 990 4125MAN 1001 Rev 1 0 41 Edgelech DISCOVER 4125 Software RMA A IIL ILa yyyyy yy a d d e e f f g g h h j k hh lt CR gt lt LF gt For fields see NMEA 0183 Specification 4 4 6 RMC RECOMMENDED MINIMUM SPECIFIC GNSS DATA Time Date Position course and speed provided from a GNSS receiver RMC hhmmss ss A Il ILa yyyyy yy a d d e e ddmmyy g g j k hh lt CR gt lt LF gt For fields see NMEA 0183 Specification 4 4 7 VTG TRACK MADE GOOD AND GROUND SPEED The actual track made good and speed relative to the ground VTG x x T x x M x x N x x K hh lt CR gt lt LF gt
11. only the raw navigation data from the GPS or Navigation Interface such as Hypack is recorded to disk The navigation information displayed in the Status Tab is the raw navigation information There are 3 sets of Fixed Offsets One related to the position of the towfish versus the GPS antenna one related to Hull mounted systems and one when raw navigation information is known to have errors Note The operator should log the Navigation Offsets and insert them every time the data is being played back SENSOR DISPLACMENT AFT OFFSET M This selection box allows the user to enter a layback distance value for the towfish A towfish attached to the bow of the vessel will have negative value This info is also recorded with the XTF Note this information is very important if the Discover Coverage Mapper application is being used STARBOARD OFFSET M This selection box allows the user to enter a fixed distance value for the towfish A towfish towing from the port side of the vessel will have negative value Document 990 4125MAN 1001 Rev 1 0 16 ZE EdgeTech DISCOVER A125 Software HEADING OFFSET DEGREE This selection box allows the user to enter a fixed offset for the heading information coming from the towfish Such as to correct for magnetic variation to get a true north estimate HULL MOUNT ADJUSTMENT In hull mount configuration the towfish Pitch and Roll information needs to be corrected to the Pitch and Roll of the survey v
12. 1001 Rev 1 0 11 IE Se Ei J Aye eS ee m tele ele E fi n r Af S I EE UE Marva Speedin 05 2 j 2 f SS E g DE f rahe L f f E NS e EE eee nef teen r E AT D r EE z SE EE SE E oen ee Z DR Dita Dik Danes Trek Gre Pete ae Highs 2 3852 Vio Daly Oi ner Pry T2 tek Fyrom Uren Bey T2 Sepp SZ weg Lore Zoom itt E7 verbes O ues re T E tek Late keen x Lines Peg T Set 8572 w s 0 1 SSL055M0 Lx OMON Le 0 00000 Cosel Speet 00 Dee Tme Meadng fich 00 Mot 00 Akude NA Dem 0000 Mae 0 Dee Space 160409 MB When set to AUTO the Gain and TVG windows are grayed out on the Discover main window The operator can still click the N and T buttons These buttons should be used the first time the system starts acquiring sonar data to speed up the centering of the gains The gains will increment or decrement the numbers in the grayed out boxes to achieve the proper values Since the gains are based on range it will take a few minutes for the software to collect enough samples to provide the proper gain settings Document 990 4125MAN 1001 Rev 1 0 12 neue Ze i 22 222 Z gta
13. 74 EE emu prm Mes L peu SE x EE E prr cue cuu cuu ees Z Z Conni Dik Danes Track Gei Gs Me eene FA ues ee T P at ge keng s twee Peg 12 Sept TE 0 1 e Zi E67 T T Fk moreno x Gei TH zona CFE vinta 0 5920 55M 0 Le 0 000000N Lom 0 000000 Cose Speet 00 Os Tme NA Heading NA Puch 00 00 Aude NA Deag 000 Mate 0 Fite Space 160408 MB DEPTH SOURCE Check Box This selection allows the user to select Pressure Depth or None This information is displayed in the bottom right side of the Discover window Remember to reset the sensor prior to deployment SOUND SPEED Numeric Display Entry This selection allows the user to adjust the sound speed in water Adjusting the Speed of Sound will affect the range scale and size dimensions Unless you have an accurate measurement of the sound speed then this value should remain at the default value of 1500m sec SLANT RANGE CORRECTION ON Check Box This selection allows the user to toggle the slant range correction on off In order for the data to be slant range corrected the software must be bottom tracking reliably If checked the sea floor altitude from the bottom tracking feature is used to convert the standard slant range sidescan data to a ground range data u
14. Desktop to the application It needs to be independently started either before or after Discover Document 990 4125MAN 1001 Rev 1 0 61 EdgeTech DISCOVER A125 Software Sidescan is running The two applications share data to present the fish track history and coverage and the Target Logger application provides marked and saved Target positions to the Coverage Mapper application The Discover Sidescan application must have a GPS receiver connected providing valid position data during the survey The Coverage Mapper application will also show the fish position and coverage history during playback of user created JSF files in Discover side scan provided the data had good GPS position data during the survey Coverage history is also saved in a user designated folder in a file such as 20051220212635 enl The file name represent the date and time of the history file creation not data acquisition date Such files may be created and re loaded at any time An example of the Coverage Mapper screen is shown below Document 990 4125MAN 1001 Rev 1 0 62 Edgelech DISCOVER 4125 Software el DiscoverCoverageM apper File Configure View Help Awe Ra ete Lon 80 5 10 Lon 80 5 00 Fish Track Actual Ground Range Port Side Marked Target Position Current Cursor Position Lat 26 4 0334 Lon 80 4 9754 W The Coverage Mapper can be user configured to e Auto Pan follow ship with fixed zoom factor e Auto Zoom
15. New Mapper File This clears the display screen of all information closes the current file and starts a new file Open Mapper File This opens an existing file and displays the data onscreen Subsequently acquired data is augmented to the display Zoom In Out These change the scale factor of the display The mouse scroll button if equipped performs the same function Measure Length LEFT click on this to change the mouse right click function to measure linear length in meters Document 990 4125MAN 1001 Rev 1 0 66 Edgelech DISCOVER A125 Software Measure Area LEFT click on this to change the mouse right click function to measure area square kilometers Pan Left Up Down and Right Moves the center of the display to the side shown by the arrow Re center Screen Forces the screen to be re centered on the current fish position 6 2 3 FILE MENU Action Performed Click this to clear the screen and start a new file Select A Discover Coverage File Look in B Data e ES 20051221025946 enl 20051216184622 5 20051213200623 enl 18 20051219222851 20051216164826 Targets 18 20051219222816 5 20051214185739 enl 09 20051219222410 8 20051213204716 19 20051216193205 E 20051213203000 5 20051216190428 en 9 20051213200859 Files of type Discover Coverage Files v Cancel Se
16. SERVICE 8 1 STATEMENT All equipment manufactured by EdgeTech is warranted against defective components and workmanship for a period of one year In order to be able to serve you faster please address any concerns related to the 4200 MP system to the plant in West Wareham MA If the situation requires sending equipment back for repair please refer to the following page for detailed shipping procedures Our customer service personnel in both plants enjoy hearing from the people who uses our products Your experience with our products is an invaluable source of information that we can use to continuously improve what we manufacture We encourage you to contact or visit us to discuss any issues whatsoever that relates to our products or application To contact technical support personnel at EdgeTech EdgeTech Document 990 4125MAN 1001 Rev 1 0 70 ZE EdgeTech DISCOVER A125 Software 4 Little Brook Rd West Wareham MA 02576 Tel 508 291 0057 Fax 508 291 2492 After Hours 508 942 8043 Email info EdgeTech com 1141 Holland Drive Suite 1 Boca Raton FL 33487 Tel 561 995 7767 Fax 561 995 7761 After Hours 561 995 7606 Document 990 4125MAN 1001 Rev 1 0 71
17. TASKBAR Hx i Hea AA Immediately underneath the menu list is the taskbar of icons see above picture The first set of icons has to do file management The second set is associated with the measurement tools operated by using the right mouse button The third set is related to the zoom feature Document 990 4125MAN 1001 Rev 1 0 58 EdgeTech DISCOVER 4125 Software Open icon Click this to get a Windows dialog box where you can specify a target file to open Make sure the File Type is set to the file type you are opening or to All Files This icon is equivalent to choosing File e Open from the main menu oO Save icon This saves the currently loaded target window The target name is Target X Y tgt Where X is the sequence number and Y is the target number The sequence number is set from the Target Setting Configuration menu If the target has already been saved it will be resaved as Target X Y Z tgt Where Z is a number appended to the original target file name Each time a target is saved 3 files are generated e Target X Y tgt Actual Sonar data around the target e Target X Y jpg Image of the target e Target X Y htm Target Image with info and annotation in htm format for easy printing and sharing Delete icon This button will delete the selected target from the candidate directory if it has not been saved yet or from the target directory if it was saved and re loaded ka Ka Lengt
18. XXX Degrees Minutes decimal 2 fixed digits of degrees 2 fixed digits of minutes and a variable number of digits for decimal fractions of minutes Leading zeros always included for degrees and minutes to maintain fixed length a N for North Latitude or S for South Latitude Degrees Minutes decimal 3 fixed digits of degrees 2 fixed digits of minutes and a variable number of digits for decimal fractions of minutes Leading zeros always included for degrees and minutes to maintain fixed length b E for East Longitude or W for West Longitude hhmmss ss Time of position fix HoursIMinuteslSeconds decimal 2 fixed digits of hours 2 fixed digits of minutes 2 fixed digits of seconds and a variable number of digits for decimal fractions of seconds Always pad with leading zeros This field is optional A Status Single character field A Yes Data Valid Warning Flag Clear V No Data Invalid Warning Flag Set NOTE Other supported navigation strings for position are GGA RMA RMC 4 4 0 GXY GEOGRAPHIC POSITION X AND Y COORDINATES X and Y coordinates of the present vessel position in millimeters time of position fix and status GXY XXXXXX Xxx a yyyyyy yyy b hhmmss ss hh lt CR gt lt LF gt XXXXXX XXX Floating point numeric may have leading negative sign Represents horizontal axis of plane X coord a Character label for X Must be valid ASCII character but value is ignored Floating poin
19. attenuation or possibly a complete failure of the towfish computer to boot properly Sometimes a power cycle of the topside interface unit will correct this error Also check the laptop computer for correct IP address in this manual and also refer to the 4125 User s Hardware Manual pn 990 4125MAN 1000 for additional hardware information The Diagnostics message reported in the Top Right section in RED if a problem is detected is a vita clue for diagnosing connectivity problems Possible sates for this are 1 Network Configuration Error 2 Cannot Ping Towfish Electronics 3 No Socket Connection Document 990 4125MAN 1001 Rev 1 0 23 ZE EdgeTech DISCOVER A125 Software Diagnostic Information Problem Cannot Ping Towfish Electronics Diagnostic Not Monitored Gains Display Disk Bottom Track Grids Printer Status Range M Signal Meter Frequencies 1 7524 Port 48 Starboard 44 8725 KHz 9275 KHz Local Area Connection is now connected Speed 10 0 Mbps 1 7524 Port 2436 Starboard 879 3775 KHz 0 untitled Paint The system level diagnosis for each State is 1 Network Configuration Error The Towfish and telemetry system are not powered on or the Ethernet connection between the Discover computer and the telemetry system is not correct This error is reported if there is no valid Ethernet connection at the Discover computer on the TCP IP 192 9 0 xxx subnet A Ping command
20. by the Discover Side Scan application the following data is sent in real time to the Mapper application e Current true ground range of the side scan which is affected by the bottom tracker or manual fish height estimate e Navigation position of the survey vessel e User entered towfish layback see Navigation Offsets in Section 3 These parameters are used to plot the position of the ship towfish and coverage area on the 2D lat long based grid Since the towfish s internal compass is used to show the its heading it is important that the compass is properly calibrated See the Towfish Manual for instructions on how to do this Targets marked and saved in the Target Logger application See Section 5 are sent to the Mapper application for plotting on the 2D grid All data used to construct the coverage map are saved as enl files for later recall These files are not large so do not consume much space however they will need to be erased periodically to keep the disk clutter down Document 990 4125MAN 1001 Rev 1 0 65 Edgelech DISCOVER 4125 Software 6 2 1 WINDOW LAYOUT EADiscoverCoverageM apper x File Configure View Help Measure Length Right Mouse may NON Se Re Center Screen ASIRAH e t gt Loa 80 5 10 Lon oo 5 10 i _ E Pan Left Up Down Right Measure Area Right Mouse Zoom In Out Open Mapper File Lat 26 4 0334 Lon 80 4 9754 W 6 2 2 CONTROL ICONS LEFT TO RIGHT Start
21. each frequency Please note that the HF system is limited to around 150 meters maximum range while the LF system ha a maximum useable range of less than 500m The firing rates will depend on the maximum ranges and the Trigger Master selection 3 2 2 VIDEO GAINS NORMALIZE Button Automatically Sets the Display gain of each channel to a value suitable for the current maximum echo levels For very weak signals a high gain will be applied and for strong signals a low gain The value chosen is shown in the Gain box and may be adjusted by the user Note It is this display gain that is applied to data recorded in the XTF format The native EdgeTech format data is unaffected by this display scaling The gain set automatically may now be manually modified to suit using the Gain edit box or spin buttons Document 990 4125MAN 1001 Rev 1 0 26 Edgelech DISCOVER 4125 Software GAIN dB Display Entry This selection allows the user to adjust the overall video gain for both the port and starboard signals TVG dB 100m Display Entry This value is used to apply exponential time varying gain to the Displayed WATERFALL data for both the port and starboard signals This gain is NOT applied to the recorded data in any format nor is it applied to the data displayed in the top amplitude vs range display window The Origin for the start of the gain may be selected to be the time origin or the sea floor See Sound Speed entry above MAX
22. range calculation The default value is 1500m s This value is changed from the Discover software Navigation Offsets Check this box to enable output of the Pitch Roll Aft and Starboard offsets as inserted in the Discover software during acquisition Remarks Check this box to enable output of any remarks added to the target file Ping Number Check this box to enable output of the ping number at the location of the target File Name Check this box to enable output of the sonar data file name associated with the target 5 4 3 NAVIGATION OVERRIDES Navigation Overrides x Use Course as Heading Document 990 4125MAN 1001 Rev 1 0 53 ZE EdgeTech DISCOVER A125 Software 5 4 4 5 4 5 5 4 5 1 If the sonar towfish is not equipped with a heading sensor check this box to use the survey vessel course GPS or Boat Gyro for calculations MAPTECH MARK FILE FORMAT Maptech is navigation software that is provided as an option with the EdgeTech Discover software Maptech software provides real time viewing of the ship track lines superimposed on navigation charts Please refer to the Maptech web page for a complete description of the format http www Maptech com support doc cfm docid 137 amp plid 24 amp CFID 135562 amp CFTOKEN 74009708 Note The row was transposed to column for display purposes Record Version 4005 Always 1 1 Symbol 10 Col
23. scrolling sonar image in the Discover software launches the Target Logger Document 990 4125MAN 1001 Rev 1 0 47 Edgelech DISCOVER 4125 Software If the Target Logger is already running when a target is designated in the waterfall right click the Target Logger becomes the active window If Discover software is not running Target Logger can be initiated by activating the desktop shortcut A mouse button right click action in the sonar data waterfall display causes Discover to select an area of imagery centered about the current cursor location This area of imagery is displayed in full resolution in the Target Logger main window The default window size of the target image is 200 vertical display lines by the full sonar range The vertical size for the window can be changed by modifying the TargetWindow entry in the active Discover Software initialization file DiscoverLastxxxx Jni Caution should be exercised before making this larger to ensure adequate processor resources RAM memory CPU speed etc are available to handle larger data windows For the default settings the processor requirements are RAM 512Mbytes minimum CPU Pentium 3 or higher CPU Speed gt 1 GHz 5 2 OPERATION As the sonar data is scrolling down the display a target of interest may become visible By placing the cursor over the target and right clicking you will activate the Target Logger log the target into the candidate direct
24. selection of each of the color of each of the displayable parameters Re Center Display Forces the display to be re centered on the current or latest fish position 7 COMPASS CALIBRATION The towfish is fitted with a Honeywell Digital Compass Module HMR3000 This unit provides magnetic heading pitch and roll information via an RS232 interface The RS232 data stream from the HMR3000 is read and interpreted by the Sonar exe application running in the towfish The compass interface parameters are e RS232 19200 bit s 8 bit 1 stop bit No Parity e Output Message Format NMEA HPR 120 second See HMR3000 manual Section 3 10 7 1 CALIBRATION METHOD To calibrate the compass module the Honeywell PC application software PCDEMO EXE must be executed on the towfish computer Document 990 4125MAN 1001 Rev 1 0 69 ZE EdgeTech DISCOVER A125 Software Access the towfish computer using the Sonar rdp shortcut on the topside computer This activates the Remote Desktop feature of the EdgeTech supplied topside which allows direct access and control of the remote towfish computer using the telemetry link It is therefore NOT necessary to open the towfish unit for this purpose See typical remote desktop view below The IP Address of the towfish computer is 192 9 0 101 User Name Administrator Password admin These should be stored with the sonar rdp shortcut but may be needed if this has been removed 8 CUSTOMER
25. with the monitor sitting next to a phone If a window comes up asking if you want to configure a modem now select No or Cancel Otherwise proceed to the next step Another window titled Connection Description appears In the Name box type in the letter t for test Click on OK Another window pops up with the title Phone Number The only field of interest here is Connect Using which must be set to Connect to COMI Click on OK The window COMI Properties appears The only field to change here is Bits per second which should be set to 4800 since the NMEA 0183 standard specifies 4800 baud rate Click on OK The main white HyperTerminal window becomes completely visible hopefully with GPS data scrolling upward Every sentence must begin with a dollar sign and five letters If the screen is blank this means no data is coming in through the port Document 990 4125MAN 1001 Rev 1 0 46 Edgelech DISCOVER 4125 Software 8 When finished viewing the screen select Exit from the File menu When asked if you want to disconnect now click on Yes When asked if you want to save session click on No Repeat the above steps for other COMs replacing COMI with COM2 COM3 and COMA If none of these will reveal GPS input then the problem lies in the physical serial port the GPS receiver or the connection between the two At this point one of three things can happen 1 I get an error message This means th
26. 2 TRANSMIT SIGNALS The transmit signal are linear frequency modulated FM chirp pulses with rectangular pulse envelopes The port starboard pulse discrimination is achieved by alternating the direction of the chirp modulation for each side chirp up freq is port side Receiver processing Document 990 4125MAN 1001 Rev 1 0 4 ZE EdgeTech DISCOVER A125 Software The echo signals from the receive elements are amplified and band limited to encompass the useable array bandwidth After suitable amplification the echo signals are digitized using a high dynamic range A D converter The pulse compression and echo separation is achieved in the FM chirp matched filtering For each transmitted pulse matched filtering MF is implemented in digital signal processing DSP where the echo data is digitally correlated with a replica of the transmit signal The chirp waveform processing provides both signal gain during the pulse compression and out of band noise rejection 1 3 REMOTE CONTROL SOCKET The system may be optionally controlled in a limited manner On OFF Range selection and data recorded by 3 party Topside controller systems This is accomplished via using a second dedicated Ethernet port on the Discover processor These 3 rd party systems are available from Triton Elics International ISISG see www tritonelics com CodaOctopus Ltd Coda GeoSurvey See www CodaOctopus com and Chesapeake Software s Sonarw
27. ON 4 4 10 EVT EVENT amp ANNOTATION EDGETECH CUSTOM Event mark and related annotation provided by an integrated navigation system EGEVT S lt Message gt hh lt CR gt lt LF gt S ASCII character status flag M Print and Store event mark Message Event annotation or just annotation message up to 23 characters long NOTES Annotation and event marks are placed on the starboard display screen when received printed on the printer if on and stored on disk along with time date and coordinates Event marks are displayed on the port display screen as a tick mark and mark number 4 4 11 EMA EVENT SET MARK AND ANNOTATION EDGETECH CUSTOM Event mark number and annotation provided by an integrated navigation system ETEMA NNNNNN Message hh CR LF NNNNNN Mark number to use for this event Message Event annotation message up to 23 characters long NOTES This message should only be used if it is imperative that the event mark number be externally controlled otherwise the SEGEVT message should be used If the mark number sent is the same as the current mark number the message will be ignored Document 990 4125MAN 1001 Rev 1 0 43 EdgeTech DISCOVER A125 Software NOTE A shortcut to the Windows HyperTerminal application is provided to check the navigation input You must quit the Discover application before running and may need to modify the properties if not running at 4800 baud A sample
28. PRINTER INTERFACE Check Box This selection allows the user to select the proper printer network 3 1 2 4 Navigation Setup See also Navigation Interface Section Document 990 4125MAN 1001 Rev 1 0 15 ZE Edgelech DISCOVER A125 Software Navigation Configuration BaudRate 4800 v 3GPXTE A A228 RN A715 M P SGPATE AA 2 28 OKSGPVTG 1245 7 1303M 0 0 0 0 401 BAUD RATE This selection allows the user to select the navigation input port baud rate The default is 4800 Serial Port Selection is made through settings in the Discover Defaults jni DiscoverLast4125 Jni or other jni file Note The large window in the middle of the navigation Configuration panel will display the last valid NMEA 0183 message that the Discover Software detected Using the scroll down option will show more messages 3 1 2 5 Navigation Offsets Navigation Fixed Offsets Sensor Displacement Hull Mount Adjustments Input Navigation Correction Aft Offset in meters Pitch Offset in degrees Nose up is positive 0 00 X Offset in meters Starboard Offset in meters Roll Offset in degrees Port side up is positive 0 00 Y Offset in meters Depth Offset in meters up is negative Longitude Offset in degrees Heading Offset in degrees Latitude Offset in degrees 00000 Navigation Offsets are used only for target location determination using the Target Logger These values are NOT recorded with the data
29. Rev 1 0 10 ZE Edgelech DISCOVER A125 Software NOTE Not all Discover versions implement every feature described herein If an item is not applicable to all versions this is noted as a footnote to each control Each sub menu item is described below 3 1 2 1 Display Setup Display Configuration High Frequency Depth Source TEBEA Slant Range Correction On Speed Correction On wi Sound Speed 1500 Origin Normalize On Auto TVG On Depth Mak 0 SeaFloor e None Subsample Method Maximum Aeren Manual Altitude 00 7 Override Slant Range Correction On Speed Correction On ic TVG Start E e Manual Speed Kn 0 022 Override e Origin Auto Normalize Auto TYG On C Sea Floor Subsample Method Maximum e TYG START Toggle This selection allows the user to select the starting point of the Time Varied Gain TVG The TVG can be applied beginning at the towfish origin or seafloor The seafloor location is determined by the bottom tracking In order for the Sea Floor setting to be used the software must be bottom tracking reliably Recommended setting Origin AUTO NORMALIZE AUTO TVG Check Box To turn Auto Gain and Auto TVG on start the Discover program and acquire data by checking the Sonar ON boxes located in the Towfish Control Tab Next click on Configuration and then click on Display Document 990 4125MAN
30. TVG dB Display Entry To enter the slope or the limit of the TVG ramp click on the value to be changed and enter the new value The time varying gain slope is used to adjust the image gain with increasing range to compensate for signal loss with range The TVG limit stops the gain increasing with range at the displayed limit COMPRESSION dB Display Entry This entry supports a value of 0 5 10 or 15dB A value of zero causes the display palette to be used in a linear fashion mapping the input signal range to 256 shades of color gray scale A value gt 0 causes the palette to be warped progressively so as to emphasize small signals while relatively reducing the intensity of stronger signals STARBOARD GAIN dB Display Entry This selection allows the user to adjust the individual gain of the starboard signal so that the data display can be corrected for any imbalance between the port and starboard channel 3 2 3 DISPLAY Towfish Control Video Gains Display Disk Bottom Track Grids Printer Status Palette High Zoom 23 NH Video Delay 0 Lines Ping 12 Ei d Lines Ping 1 Zeompa 100002 Video Dele 04 Low Zoom 700 001 Video Delay 0 1 Lines Ping p rmi D s Lines Ping E Zoom Z 1000024 Video Delay g SSL 0 SSH 0 Mak 0 Free Space 1418 MB Sonar OFF IGPS OFF Record OFF AS Power FULL ZOOM There are two of these selection boxes located in the control pa
31. Used for other NMEA data input This menu allows the user to configure the serial ports and adjust relative baud rates for the primary and secondary navigation inputs and also the cable counter monitoring Discover allows for two separate Navigation Devices coming in on different serial ports Remote COM ports give the user the ability to link a serial device in the bottle to Discover via the telemetry link 3 1 2 11 Alert Configuration Alert Configuration Minimum Altitude Maximum Depth Active Active Audible Alarm Audible Alarm Minimum Altitude M 100 Maximum Depth 00 Maximum Roll Maximum Ptch Active Active Audible Alarm Audible Alarm Maximum Roll degrees 0 0 Maximum Pitch degrees 0 0 These settings when checked will send out alarms for Altitude Depth Roll and Pitch 3 1 2 12 Layback Towfish Depth Towpoint Offsets Layback Calculation x Aft 0 00 2 Manual Entered Layback value is used Starboard 0 00 Catenary Factor Height Layback Document 990 4125MAN 1001 Rev 1 0 19 Edgelech DISCOVER 4125 Software Layback is the horizontal distance in meters from a reference on the survey vessel to the towfish The layback function is for tracking the sonar towfish this is done by inputting or calculating the offsets of the towfish Depending on the available sensors the surveyor may choose one of three methods for calculating the layback 1 m
32. anually 2 using the hypotenuse equation 3 using a catenary factor Notes e Sonar data collected with will layback will have the layback values permanently stored in the JSF file e Layback information can be modified during playback to generate corrected maps e Layback values entered during playback do not override the existing numbers e All values entered in this menu are expected to be in meters e During playback the software defaults to playing back the data without any layback e use the originally recorded layback values customer must select playback form the drop down menu in layback calculations e The Catenary value is expected to be between 0 and 1 with 0 representing the towfish directly below tow point and 1 representing the angle of attack to be zero degrees horizontal e For exact layback reading a USBL Ultra short baseline a method of underwater acoustic positioning is required Figure 3 1 Layback Cable Out Manual User manually inputs the estimated amount of cable out MacArtney The cable out comes in through a serial port to Discover from a counter on the winch counter Playback Originally calculated cable out value is used Towfish Depth Manual User manually inputs the estimated depth of the towfish Pressure Sensor Depth comes in through a serial port to Discover from a pressure sensor in the towfish DPT Depth comes in as a NMEA string through a serial port to Dis
33. are 5 M Ue SN Highlight Microsoft Serial Ball Point and click the Disable button at the top of the window it is usually the second button from the right hover the cursor over it and read the Tool Tip to verify In the confirmation message window that appears click Yes Close the Device Manager Plug in turn on your GPS Restart Discover Software Problem No communications between GPS and Discover Software Solution When Discover isn t getting the GPS data during data acquisition it s a good idea to check outside of Discover to be sure the serial port is receiving the data If the ports do not see any GPS data coming in then Discover will not be able to see the signal HyperTerminal one of the programs which come with Windows is a useful troubleshooting utility since it reads any information being received by the system through any available COM port Here are the steps Notes Discover and all other programs especially any that use COM ports for other connections should be closed while running the HyperTerminal program The GPS should be set to its NMEA mode in its Interface Setup area for this test The GPS should be set to its Simulator mode if indoors or having difficulty obtaining the GPS Sat fix 1 2 Click Start then Programs then Accessories then Communications then HyperTerminal In the window that opens titled HyperTerminal double click on the icon which says Hyperterm the one
34. ary length from the input data file that may support only small screen shots of valuable or interesting data or the entire input file in XTF format The navigation data and roll pitch motion sensor data acquired during recording will be reproduced in the XTF output Sections of Data files may also be concatenated in this manner by keeping the recording file open and selecting various input files for playback NOTE The XTF format does NOT support sidescan data with dual frequency operation at independent or differing ping rates There are many post processing packages that read the XTF format but do not properly support range scale changes within a file A new file can be forced on a range scale change See 0 3 2 5 BOTTOM TRACKING Document 990 4125MAN 1001 Rev 1 0 30 Edgelech DISCOVER 4125 Software TRACK BOTTOM This selection allows the user to toggle the bottom tracking feature On and Off Bottom Tracking is required for proper operation of the TVG seafloor Image Correction and Towfish Altitude Display features Once the bottom track feature is turned on you will need to use the following control features to adjust it so that it is tracking reliably TRACKING INDICATOR This feature allows the display of a line parallel to the seafloor to indicate that the software is properly tracking the ocean bottom DETECTION THRESHOLD Display Entry This selection allows the user to limit the bottom tracking to a user define
35. at the COM port you have selected is not available or functioning properly Close HyperTerminal and repeat the process trying a different COM port If you are certain that you are selecting the proper COM port contact EdgeTech for further troubleshooting tips I get a blank screen with a flashing cursor The COM port you ve chosen is not currently receiving NMEA data Close HyperTerminal and repeat the process trying a different COM port If you are certain that you are selecting the proper COM port check the output settings on the GPS If you are certain that the GPS is outputting NMEA strings use a Null Modem to swap pin 2 and 3 TX amp RX I get a screen with text scrolling upward You re successfully connected to your GPS unit Good GPS data will look like the following GPRMC 201502 A 4251 2939 N 07054 4254 W 000 0 000 0 291002 016 3 W 7C GPGGA 201502 4251 2939 N 07054 4254 W 1 07 1 7 55 6 M 32 7 M 4A GPGLL 2600 0100 N 800000 0000 W 151228 99 A 67 GPVTG 315 65 T 314 15 M 3 8 N 7 0 K 48 GPZDA 151229 25 28 08 1997 06 00 45 The data you see scrolling by indicates your current position among other things Note the COM port used and exit HyperTerminal When asked if you want to disconnect now click on Yes When asked if you want to save session Test click on No 5 TARGET LOGGER 5 1 INTRODUCTION EdgeTech s Discover Target Logger is used for feature mensuration logging and recall Right clicking on the
36. ble Ping Number Ping number at the location of the target Document 990 4125MAN 1001 Rev 1 0 56 Edgelech DISCOVER 4125 Software 5 5 2 MEASUREMENTS Measurements M x X Distance 0 00 Meters Y Distance 0 00 Meters Total Distance 0 00 Meters Length 10 77 Meters Width 7 35 Meters Area 107 00 Meters Shadow Range 34 45 Meters Shadow Length 7 30 Meters Height 1 89 Meters X Distance Temporary value that measures the cursor across track X displacement Right click and drag cursor Y Distances Temporary value that measures the cursor along track Y displacement Right click and drag cursor Temporary value that is calculated from the X amp Y values that measure the cursor s ees actual displacement Right click and drag cursor Length Press first the icon then right click and drag the cursor over longest dimension of the target to measure its length Width Press first the icon then right click and drag the cursor over the shortest dimension of the target to measure its width Area Press the E icon then right click and drag the cursor over the over the target of interest to measure its approximate surface area Shadow Range Press the Al icon then right click the cursor at the beginning or the far end of the target shadow to get its ground range nearest point from the sonar towfish Shadow Length Press the Al icon then right click th
37. ceive which would connect to the transmit pin on the GPS This connection will take the position data from the GPS for use in the Discover software This is a necessary connection for GPS communications Pin 5 usually green is Ground This can be connected to the common ground from the GPS wiring This is a necessary connection for GPS communications Pin 3 usually red is Transmit This connection will go back to the GPS Pin 3 is not a necessary connection for using Discover software for Real Time positioning Only proper connections to pins number 2 and 5 are needed for to log navigation data 4 6 TROUBLESHOOTING Problem When connected to a GPS the computer s mouse acts erratically and seems to be jumping around Solution A Windows bug discovered by Microsoft where Windows detects a connected GPS as a mouse this produces a jumping cursor problem The following are the directions supplied by Microsoft support to correct the problem 1 Turn off the GPS and close Discover Software 2 Right click on the My Computer icon and select Properties 3 Select the Hardware tab and click the Device Manager button 4 Next to Mice and other pointing devices click the plus button to expand this list You should see at least two items listed One is the mouse you normally use and the other will probably be listed as Microsoft Serial Ball Point Document 990 4125MAN 1001 Rev 1 0 45 Edgelech DISCOVER 4125 Softw
38. cover from a pressure sensor in the towfish The format expected is DPT x x x x x x hh lt CR gt lt LF gt Document 990 4125MAN 1001 Rev 1 0 20 Edgelech DISCOVER A125 Software Playback Originally calculated towfish depth value is used Tow point Offsets This is the offset distance in meters from the GPS to the tow point manually inputted by user Note height should be from sea level Layback Calculations Manual The user manually inputs the estimated layback and that value is used by Discover Hypotenuse Using the equation that Layback equals the Layback The square rootof square root of the difference between the square the difference between the of the cable out and the square of the sum of the square of the cable out and depth and tow point height the square of the sum of the depth and towpoint height L sqit C 2 d h 2 Catenary Layback equals the line out times the catenary factor angle of attack Playback Originally calculated layback value is used Warning Layback calculations are set up for surveys preformed in a straight line When turning layback calculations are not valid Aft offset GPS Antena o V 2 2 LAYBACK V CABLE DEPLOYED TOWFISH DEPTH Starboard V 2 2 LAYBACK 50 METERS 25 METERS Layback 43 METERS V 1875 y S Tow Point d 4 3j Reference Point Height offse
39. d percentage of the sonar signal display window This setting will vary depending on bottom types but a good place to start is about half of the peak signal displayed in the sonar signal amplitude display window To enter a threshold for bottom tracking click on THRESHOLD and enter the new threshold The threshold refers to the position of the threshold in the top trace display window These values are more efficiently set graphically using the mouse e g Double clicking the mouse in the window sets the threshold at that horizontal level For very small bottom returns temporarily expand the top window to accurately place the threshold using the mouse See Section 3 5 1 INDICATOR OFFSET pixels This selection allows the user to offset the Tracking Indicator by a user defined of pixels This feature is helpful when you have a very hard bottom material which makes it is hard to see the tracking indicator HOLDOFF M This selection allows the user to manually force the tracking algorithm to exclude a region out to a certain distance from the towfish from consideration in choosing bottom candidates The region extending from 0 meters out to the hold off range are excluded from the bottom tracker This feature is very helpful when there is a large amount of clutter in the water column below the towfish that makes bottom tracking difficult It is important for the operator to monitor the tracking indicator frequently when this feature is used If the wat
40. d rates of 4800 and 9600 bit s are supported Higher bit rates 19200 etc may not work The following information describes the serial port interface parameters for acquiring navigation strings from a connected GPS unit or integrated navigation computer to the Discover processor serial port The system will also accept Annotation and Event mark strings in accordance with Section 4 4 10 Several of the messages conform to the NMEA 0183 protocol For additional information refer to NATIONAL MARINE ELECTRONICS ASSOCIATION NMEA 0183 STANDARD FOR INTERFACING MARINE ELECTRONICS NAVIGATIONAL DEVICES Version 2 00 January 1 1992 4 1 NMEA APPROVED SENTENCE STRUCTURE The following provides a summary explanation of the approved sentence structure aabbb c c hh lt CR gt lt LF gt ASCII HEX DESCRIPTION 24 Start of Sentence aa Dummy characters to start the Address Field e g GP not used by EdgeTech products bbb Sentence Formatter Mnemonic code identifying the data type and the string format of the successive fields SCH 2C Field Delimiter Starts each field except Address and Checksum fields If it is followed by a null field it is all that remains to indicate no data in the field Document 990 4125MAN 1001 Rev 1 0 37 ZE EdgeTech DISCOVER A125 Software C C Data Sentence Block Data field s preceded and separated by delimiters ES 2A Optional Checksum Delimiter
41. display is shown below GPGLL 2600 0100 N 800000 0000 W 151228 99 A 67 GPVTG 315 65 T 314 15 M 3 8 N 7 0 K 48 GPZDA 151229 25 28 08 1997 06 00 45 SEGEVT M EventNo Time Position Annotation 73 GPGLL 2600 0125 N 8000 0025 W 151229 50 A 84 GPVTG 316 65 T 315 15 M 3 9 N 7 1 K 33 GPZDA 151229 75 28 08 1997 06 00 45 SEGEVT M EventNo Time Position Annotation 48 GPGLL 2600 0150 N 800000 0050 W 151229 99 A 12 GPVTG 315 85 T 314 65 M 3 8 N 7 0 K 58 GPZDA 151230 25 28 08 1997 06 00 72 SEGEVT M EventNo Time Position Annotation 48 NOTES The number of incoming strings should be limited to the five mentioned above For accurate fixes the navigation strings should be updated once a second or faster 4 5 SERIAL PORT CONNECTIONS The following chart depicts the pinout of the male DB9 RS232 connector found on the computer Document 990 4125MAN 1001 Rev 1 0 44 ZE EdgeTech DISCOVER A125 Software 9 pin male pin out Pin 1 Carrier Detect CD input Pin 2 Receive Data RD input Pin 3 Transmitted Data TD output Pin 4 Data Terminal Ready DTR output Pin 5 Signal Ground Pin 6 Data Set Ready DSR input Pin 7 Request To Send RTS output Pin 8 Clear To Send CTS input Pin 9 Ring Indicator RI input The following outlines the different pins from the comport connection that EdgeTech processor uses for communication Pin 2 usually brown is Re
42. e are displayed All candidates are stored in C targets Candidates in the default directory or any other directory selected in the Configure Target Setting Menu The candidate file stored Candidate cdt is the actual sonar data in the area of the target The operator can either save the candidates which deletes the candidate file and creates a target file or delete the candidate HTM FILE OUTPUT If a target is saved an htm file containing a link to the target image along with navigation and target position is generated see below Any Internet browser can be used to view and print the target 6 COVERAGE MAPPER 6 1 INTRODUCTION EdgeTech s Discover Coverage Mapper is used primarily to assist in performing side scan surveys and ensuring adequate overlap on adjacent runs The towfish position as calculated from GPS co ordinate history with user entered layback and offsets is plotted in real time on a 2 Dimensional latitude and longitude grid along with the current bottom track coverage of the side scan sonar Targets marked and then saved in the Target Logger application Sees Section 5 are also displayed on the same latitude longitude grid as the towfish track and coverage data The Coverage Mapper application is separate executable normally located in the same folder as the Discover exe application Typically C Edgetech Discover xxxx FS DiscoverCoverageMapper exe There is normally a shortcut on the user
43. e cursor at the beginning of the target shadow and drag until the end of the shadow to get its ground length Document 990 4125MAN 1001 Rev 1 0 57 Edgelech DISCOVER A125 Software Height is the distance which an object stands above the seabed An object on the seafloor casts an acoustic shadow on the side facing away Height from the towfish The length or across track range of this shadow is used along with the towfish altitude and ground range to calculate the target height See Section 5 8 5 5 3 NAVIGATION OFFSETS x x Lon Offset NA X Offset 3 00 Lat Offset NA Y Offset 8 00 Heading Offset NA Heading Offset 5 00 Pitch Offset NA Pitch Offset 1 50 Roll Offset NA Roll Offset 0 55 Aft Offset NA Aft Offset 3 00 Stbd Offset NA Stbd Offset 8 00 Navigation Fixed Offsets fe Aft Offset in meters 3 00 Pitch Offset in degrees Nose up is positive 1 50 X Offset in meters Starboard Offset in meters 8 00 Roll Offset in degrees Port side up is positive 05 Y Offset in meters 8 Heading Offset in degrees 5 00 Latitude Offset in degrees 0 0000 Depth Offset in meters up is negative 1 25 Longitude Offset in degrees The Target Logger uses the navigation offsets entered in the Discover Configuration Navigation Offsets tool to determine the target position Please refer to the proper section of the manual for an explanation of these fields 5 6 ICONS ON THE
44. e native JSF format as nothing is lost during record Items 2 and 3 above allow the user to concatenate join together several input files into one output file and also to snip a section out of an input file to make shorter output file Document 990 4125MAN 1001 Rev 1 0 7 EdgeTech DISCOVER A125 Software Notes When recording in XTF Discover automatically records in JSF as well XTF flies can not be played back on Discover Document 990 4125MAN 1001 Rev 1 0 EdgeTech DISCOVER A125 Software 3 SONAR CONTROLS This document describes the DISCOVER Software features and operation The Discover Software is a Side Scan Sonar Digital Data Acquisition program The Discover Software is designed to have a very easy to operate graphical user interface Upper Menu bar Upper Shortcut bar rt Discover 4200 55 RESTRICTED File View Configuration Control Help Stbd HF Signal Amplitude isplay Port High Freq Stbd High Freq Display Window Display Window Port LF Signal Amplitude Display Meters 80 60 40 Port Low Freq Stbd Low Freq Display Window Display Window Towfish Control Video Gains Display Disk Bottom Track Grids Printer Status Signal Playback File 20051213202604 jst Browse Record File Browse F 20051213202604 jsf D miis 7777 1 miii e SSL 28900 SSH 28901 Lat 26 00 5808 Lon 80 05 5332 W Course 355 Speed 30 Date D
45. e will now be no interference between systems but the SSH system will run slowly If only one subsystem is active high or low the selection of Sidescan High or Sidescan Low as the master system will have no effect and the system will run at the supported range rate DIVISOR If set to 1 the subsystem will fire once for every external trigger event The maximum range the system can achieve is thus set by the trigger rate If set to 2 a longer range may be digitized as the sub system will now fire once for every 2 trigger events This is true for higher divisors This is true for subsystem and external trigger selections 3 1 2 9 Network Sonar IP Address 192 3 0 101 Sonar Port Number 1700 Dutput Port Number 1800 This dialog allows the user to change the IP internet protocol address and control port of the towfish DO NOT change this parameter unless a corresponding change has been made to the towfish subsystem This should only be done in truly exceptional circumstances by expert users or system administrators Document 990 4125MAN 1001 Rev 1 0 18 Edgelech DISCOVER 4125 Software 3 1 2 10 Serial Ports Serial Configuration Enable Cable Counter Monitoring Enable Primary Navigation Input Enable Secondary Navigation Input Port OFF Baud Rate 5600 Select Pot to monitor Cable Counter Port COM1 Port COM Baud Rate 4800 vi Baud Rate 4800 Used for NMEA input of GPS and Navigation
46. ech DISCOVER A125 Software External Features Configuration Enable Target Logging Enable Coverage Mapping 3 1 2 8 Triggering Options Trigger Configuration Trigger Master SideScan High xl Internal Divisor 12 The 4125 system supports either single frequency or simultaneous dual frequency operation In the simultaneous dual frequency mode the 2 systems must be arranged to transmit at the same time to minimize inter system interference This menu control allows this as follows Trigger Master Selection e Sidescan High If selected this will allow the system to automatically trigger itself at the maximum rate allowed by the Sidescan High system range setting The Low Frequency system will run at this rate OR an integer sub multiple of this rate using the Divisor setting Example 1 Sidescan High range 100m Ping Rate 7 5 second Sidescan Low SSL Range 200m Ping Rate 3 75 s with Trigger Divisor 2 in this case there may be some interference at 100m in the SSL record when the SSH system fires Example 2 Sidescan high 50m Ping rate 15 sec e Sidescan Low 100m Divisor 1 The SSL will fire at 15 sec and will only display 50m of data e Sidescan Low If selected the system will automatically trigger itself at the maximum rate allowed by the Sidescan Low range setting The Sidescan high SSH subsystem will trigger at this rate as well since the SSH range is normally less than the SSL range Ther
47. encies High Sonar On 100 Port 0 Starboard 0 00 KHz 00 KHz Low Sonar On 100 Port 0 Starboard D 00 KHz 0 0 KHz SSL 0 SSH 0 Lat 0 00 0000N Lon 0 00 0000 Course 0 Speed 00 Date Time Heading NA Pitch 0 0 Rol 00 Depth 00 Mak 0 Free Space 49796 MB GPS OFF BESSE Power OFF The 4125 system provides two basic modes of operation these being Single mode operation side scan High or side scan Low only or Dual Simultaneous mode both side scan High and side scan LOW on High Definition Mode If any of the following 2 selections are active they will preclude the use of the High Speed Mode HIGH FREQUENCY ON This selection allows the user to toggle the high frequency Towfish Control Video Gains Display Disk Bottom Track Grids Printer Status Video Gain High Ganla 04 0H gt 502 Compression 8 0 Starboard Ganda 02 00 Low Normalize 0 0H Max Tye 20 4 Compression da 0 Starboard Ganda 02 a0 00 SSL 0 8590 Mak 0 Free Space 1427 MB EMG GPs OFF TET Power FULL system on and off Note If on the system will fire in accordance with the trigger selection LOW FREQUENCY ON This selection controls the On OFF state of the Low Frequency system RANGE M These selections allow the user to select the operation range for
48. entered threshold value within the track window and outside of the Holdoff range displayed as red dash lines in the scope display The current tracked position of the seafloor is indicated by a solid red line The threshold and tracking window can be set using the mouse via the top scope graphic display Double click to set the threshold Click and drag to set the window start and end points Double clicking at the correct height in the track window sets the threshold but will NOT affect the window width 3 5 2 ZOOM To zoom into a target on the data display press and hold down the left mouse button drag across the screen Horizontal or Diagonal and release Double clicking the left mouse button in the data area will return the sonar data to full resolution Note You can use the scroll bars at the bottom of each data display to scroll horizontally through the zoomed data Document 990 4125MAN 1001 Rev 1 0 36 EdgeTech DISCOVER A125 Software 4 NAVIGATION ANNOTATION INTERFACE Connect any industry standard NMEA 0183 GPS to the Navigation COM port on the EdgeTech Processor Com 1 is default Most GPS receivers made in the past 5 years output the NMEA 0183 version 1 5 2 0 2 1 or 2 3 data language GPS receivers can be connected by a serial cable provided by the GPS manufacturers to the EdgeTech topside through a standard 9 pin serial port Refer to section 4 5 below for the pin out of the 9 pin serial connector Bau
49. er below the towfish gets shallower than the Holdoff setting then the bottom tracking feature will be operating incorrectly TRACKING RANGE M Display Entry This slider is used to adjust the width of the tracking window in meters Bottom candidates meeting the threshold requirement outside of this window are not valid This window can also be set graphically using the mouse by clicking at the start point and dragging to the end point TRACK This selection allows the user to select the channel Port or Starboard for bottom tracking This feature is very useful if you have excessive noise on one channel and not the other An example of this would be if you are towing the fish near the surface off of the port side you may encounter some vessel wake noise on the starboard side Document 990 4125MAN 1001 Rev 1 0 31 Edgelech DISCOVER 4125 Software 3 2 6 GRIDS Towfish Control Video Gains Display Disk Bottom Track Printer H Status Scale Grids 2 Meters C Mili d Horizontal Interval meters fos Vertical Interval meters E SE Feet C Yards Ping 0 0 Free Space 1363 MB GPS OFF Power FULL ON HORIZONTAL This selection allows the user to toggle the Horizontal Scale Lines On or Off Please note that in order for the Horizontal Scale Lines to be displayed you must have a navigation with valid speed or Manual speed input INTERVAL METER This selec
50. essel to account for lever effect hence the need to make some adjustments PITCH OFFSET DEGREE This selection box allows the user to enter a fixed offset for the pitch information coming from the towfish DEPTH OFFSET M This selection box allows the user to enter a fixed offset for the towfish depth INPUT NAVIGATION CORRECTIONS Depending of the type of input navigation UTM or Lat Long either the X amp Y field or the Lat Long fields need adjustment for known errors in the raw navigation input X OFFSET M This selection box allows the user to enter a fixed offset for the Easting information Y OFFSET M This selection box allows the user to enter a fixed offset for the Northing information LATITUDE OFFSET DEGREE This selection box allows the user to enter a fixed offset for the latitude information LONGITUDE OFFSET DEGREE This selection box allows the user to enter a fixed offset for the longitude information 3 1 2 6 External Features 3 1 2 7 Checking these boxes will enable these features ENABLE TARGET LOGGING Check Box For Target logging check the box then right click on the object in the sonar waterfall screen A separate screen will display the target See Section 5 Target Logging Feature covered in this manual ENABLE COVERAGE MAPPING Check Box If checked a new screen will appear showing the vehicle position in either X Y or LAT or LONG Document 990 4125MAN 1001 Rev 1 0 17 Edgel
51. ew value you must enable the override selection box This feature is not recommended for use during real time data acquisition This feature is best used during playback on data that lacks the proper speed input from the navigation system This value affects the image only when speed correction is enabled 3 1 2 2 Record Setup Record Configuration Maximum File Size 10024 FE File Name Matching XTF Output Free Space Warning MB 1024 E DIE MAXIMUM FILE SIZE MB This selection allows the user to set the maximum size of the recorded data file When the maximum file size is reached the software will automatically close the current file and open another file with a 001 002 003 etc appended to the end of the file name This feature is very useful for breaking long survey lines into small easily managed data files Setting a size greater than 600 MB may prevent the resulting files from being copied onto CD ROM disks FREE DISK SPACE WARNING MB This selection allows the user to set a minimum limit for the disk space warning indicator This indicator will alert the operator when the available disk space is approaching zero disk is nearly full Default value is 10 Megabytes XTF OUTPUT CHECK BOX Checking this box will force the data Recording subsystem to produce an XTF eXtended Triton Format format output in addition to the native JSF format See also Section 0 and http www tritonelics com public download Fi
52. figuration gt v i ES Meters Jo so l 30 20 sR fio jo w 30 Ja so 60 Meters as ira ELMAR OR 2 iila Towfish Control Video Gains Display Disk Bottom Track Grids Status Track J ES E Detection Threshold 38 71 M od Par F Tracking Indicator Indicator Offset pixels 24 Tracking range 0 E Starboard Free Space 46710 MB GPS OFF Record OFF Raa 7 The Tracking Range can be adjusted by single Clicking and Holding the left mouse button while dragging the cursor across the signal to the desired range and releasing This may take a couple of tries to get the desired result See image below Document 990 4125MAN 1001 Rev 1 0 35 EdgeTech DISCOVER A125 Software Edge Tech Discover 550A File View Configuration gt Ww 10 27 v Jracking Range Single Click Drag SR i 12U y 40 Ten 60 Meters ER gt Si n Ob Tewfish Control Video Gains Display Disk Bottom Track Grids Status Track M TrackBottom Detection Threshold 2 36 Holdoff Mt on as Treckino indicator Indicator Offset pists 0 Tracking ange Mi 10 Starboard Ping 28431 0 Free Space 46710 MB Playback BPS OFF Record OFF a Summary The search routine looks for the first sample that passes the operator
53. floating scale factor for each ping and supports much higher dynamic range data Consequently the data must be scaled to an absolute 16 bit number before recording in XTF format It is normal to leave this box checked and use the current display gains so the XTF file is wysiwyg what you see is what you get However in some circumstances it may be desirable not to let user applied gain changes affect the recorded data in which case this should be unchecked and the desired fixed gain can be applied GAIN dB The user specified gain is applied to the JSF format data before being truncated to fixed 16 bit values and written to the XTF file STARBOARD GAIN dB A gain offset or maybe applied to correct for port starboard imbalances Normally 0 NEWFILE ON RANGE CHANGE Check Box The generation of a new file can be forced on a range scale change by checking this box This ensures the production of XTF files without any range scale changes inside the file Document 990 4125MAN 1001 Rev 1 0 25 ZE Edgelech DISCOVER 4125 Software 3 2 LOWER CONTROL PANEL FEATURE DESCRIPTIONS The DISCOVER Lower Control Panel consists of individual Tab selection sheets that are activated by clicking on the corresponding tab The Features of each of theses Control Tabs are described below 3 2 1 TOWFISH CONTROL 4125 Towfish Control Video Gains Display Disk Bottom Track Grids Printer Status Range M Signal Meter Frequ
54. h icon Press this icon then right click and drag the cursor over the longest dimension of the target to measure its length 1 Width icon Press this icon then right click and drag the cursor over the shortest dimension of the target to measure its width Area icon Use this measurement pointer tool by right clicking and dragging the shaded box over the target to get an approximate measure of the surface area of the target Height icon Use this measurement pointer tool to find the height of an object by measuring it shadow Proper bottom tracking indicator is necessary for accurate measurement Zoom out icon Reduces the size of the displayed image The aspect ratio of the image is preserved as the target data is always speed and slant range corrected 22k Zoom in icon Enlarges the size of the displayed image The aspect ratio of the image is preserved as the target data is always speed and slant range corrected 5 7 TARGET IMAGE Document 990 4125MAN 1001 Rev 1 0 59 Edgelech DISCOVER 4125 Software A right click on the waterfall display causes Discover to define an area centered on the current cursor location The default window size of the target image is 200 lines by the full sonar range The vertical size for the window can be changed by modifying the TargetWindow line in the active Discover Software initiation file DiscoverLastxxxx Jni The target location can be adjusted by zo
55. he GPS HEADING PITCH AND ROLL Displays the towfish compass data ALTITUDE Displays the current fish altitude as calculated from the Bottom Tracker function DEPTH Displays the depth of the towfish in meters if the optional pressure sensor is present FREE SPACE This section of the Lower Indicator Panel displays the remaining amount of data storage space on the current drive in Megabytes SONAR GPS RECORD AND NET This section of the Lower Indicator Panel displays the status of the indicated feature RED indicates a state of Off or Not Active During Normal operation all these indicators should be on WHITE Of course if you do not want to record data then a RED indicator here is acceptable 3 4 SHORTCUT BAR Document 990 4125MAN 1001 Rev 1 0 33 Edgelech DISCOVER A125 Software Reduce Current Increase Reduce Current Increase Gain Gai Gain TVG TVG TVG A FE Discover 4200 FS RESTRICTED Playback Pause Stop Faster dB 100m Insert mark Speed Correction Normalise Display Auto TVG Set Toggle ON OFF Auto scale 3 5 SCREEN CLICKS AND OTHER SHORTCUTS 3 5 1 BOTTOM TRACKING With the Bottom Tracking Feature activated you can adjust the threshold by double clicking the left mouse button in the sonar signal amplitude display window See the image below Document 990 4125MAN 1001 Rev 1 0 34 ZE EdgeTech DISCOVER A125 Software EdgeTech Discover 550A File View Con
56. ied such as screen gain software TVG etc The only User settings which unavoidably affect the recorded data are those implemented by the sonar system such as range settings pulse power levels and pulse selection This is only true for native format recorded data which supports a floating exponent format For those post processing packages that do not support the new version 18 of XTF the user s Gain setting must be applied to the data before fixing and truncating the data to 16 bits Other valuable system setting information is also lost which may be valuable for later system error diagnosis RECORD WHILE PLAYBACK The independent operation of the playback and recording modules of the Discover software allow some very useful data operations During real time data acquisition only the record module is available This may be engaged to log data in native JSF format or XTF format This may be started paused or stopped at anytime during acquisition During Playback the record operation may be started paused and stopped at any time During Recording the Playback operation may be started paused and stopped at any time The data file source for playback may also be changed When recording to a file the format may be specified to be either native JSF or XTF format This allows for transcription of JSF file to XTF format at any time The reverse is NOT true For this reason we recommend that all data is acquired and archived on th
57. iz www chesapeaketech com These systems provide advanced survey functionality such as real time mosaics and pipeline tracking 2 GENERAL DATA FLOWS Document 990 4125MAN 1001 Rev 1 0 5 Edgelech DISCOVER 4125 Software The flow diagram below shows the general processing concepts and data flows associated with the Discover Acquisition software User Inputs User Inputs Gain Range Set TVG Pulse Select Pallete Power Set Balance Zoom S c Display Processing TVG VM Palette Tow Fish Interface TCP IP Source Acquire n d a Input Data D Ba wa xi Be vA Playback data GE c 277 Nav Input Direct to Display rocessing Com Port Gm Display Primary Data Flow d Disk Store A Record Playback p Discover Processing Diagram 2 1 KEY FEATURES 2 1 1 DATA SOURCES data and command interfaces with the sonar sub system are implemented using TCP IP Transport Control Protocol Internet Protocol The source for Navigation and other auxiliary data is via serial ports on the processor Document 990 4125MAN 1001 Rev 1 0 6 Edgelech DISCOVER 4125 Software 2 1 2 2 1 3 1 2 3 4 RECORDING OF RAW DATA To the fullest extent possible the data received from the sonar system is recorded to disk in the native EdgeTech format jsf without any of the user s run time display processing options appl
58. jpg Target 1 12 jpg Target 1 14 jpq Target a Target 1 10 tgt Target 1 12 tgt a Target 1 14 tgt Target Target 1 11 htm amp JTarget i 13 htm Target 1 15 htm Target gt File name Files of type Fls sl Cancel 2 Discover Taraet File Click this to get a Windows dialog box where you can specify a target or a target candidate file to open Make sure the File Type is set to the file type you are opening or to All Files Removes from the working window the target image that has the active Close focus This does not delete the image The image can be re opened from the candidates or targets directory This saves the currently loaded target window 2 xl The target name is Target X Y tgt Where X is the sequence number and Y is the target number The sequence number is set from the Target Setting Configuration menu If the target has already been saved it will be resaved as Target X Y Z tgt S Where Z is a number appended to the original target file name ave Each time a target is saved 3 files are generated e Target X Y tgt Actual Sonar data around the target e Target X Y jpg Image of the target e Target X Y htm Target Image with info and annotation in htm format for easy printing and sharing This button will delete the selected target from the candidate directory Delete if it has not been saved yet or from the target directory if it was
59. leFormatInfo XtfFileFormatX 12 pdf See also Section 3 2 4 Document 990 4125MAN 1001 Rev 1 0 14 ZE EdgeTech DISCOVER A125 Software 3 1 2 3 Printer Setup Printer Configuration Select Printer EPC HSP 100 EPC 1086 NT EPC 9206 Depth Scale InvertPrint Invert Gray Scale Slant Range Correction On Active Labels Background Invert Shade Annotation Active Tex M EventNumber Background Invert Shade Banner Printer Interface Reverse Pott NETWORK v This configuration window is for selecting one of the supported thermal printers Currently the following printers are supported e EPCHSP 100 e EPC 1086 NT e EPC 9206 INVERT PRINT Toggle This selection allows the user to mirror the sidescan data on the printout This will flip the port and starboard channel positions on the paper Use to get the correct orientation for your installation REVERSE BANNER Toggle This selection allows the user to mirror the banner at the footer of the data record on the printout Depending on the orientation of the printer you may need to select this option Note Invert Print and Reverse Banner work together to select the orientation of the data printout INVERT GRAYSCALE Toggle This selection allows the user to select dark output for low back scatter areas DEPTH SCALE Check Box Select as required ANNOTATE Check Box Select as required
60. lect a file for Display Exit Select Exit to exit the Discover Coverage Mapper application Document 990 4125MAN 1001 Rev 1 0 67 EdgeTech DISCOVER A125 Software 6 2 4 CONFIGURATION MEN Menu Action Performed Select Folder Look in O Data B Targets Folder Selection Folder name EE dgetech Data Cancel This allows selection of the folder for storage of the Coverage Mapper files When selected the display zoom factor is adjusted to ensure the towfish position is Automatic Zoom displayed on screen When selected the display zoom factor is kept constant and the display is panned to Automatic Pan Sea MP ensure the towfish position is displayed on screen 6 2 5 VIEW Configuration Parameter Meaning or Action Performed Toolbar Toggles display of the shortcut toolbar on the top of the screen Ship Position Toggles display of the ships position on off Fish Position Toggles display of the tow fish s position on off Document 990 4125MAN 1001 Rev 1 0 68 EdgeTech DISCOVER A125 Software Targets Toggle suppression or display of target position on display Coverage HF Toggle suppression or display of HF system coverage on display Coverage LF Toggle suppression or display of LF system coverage on display Zoom IN Zoom IN one scale factor Zoom OUT Zoom OUT one scale factor Colors Allows user
61. nel one for port and one for starboard These selections allow the user to adjust the Horizontal Zoom factor for the port and starboard displays A factor of 10096 maps one sonar sample to one screen pixel A value of 1096 maps 10 sonar samples to one screen pixel On screen zooming using the mouse is more efficient and affects these values See section 3 5 2 LINES RETURN There are two of these selection boxes located in the control panel These selections allow the user to adjust the Vertical Zoom for the port and starboard displays If set to one the one echo set is mapped to one line of screen pixels If set to 2 then the echo data is duplicated and written to 2 horizontal lines of screen pixels Useful for seeing details in the echo data VIDEO DELAY Samples There are two of these selection boxes located in the control panel These selections allow the user to adjust the video delay from the centerline for the port Document 990 4125MAN 1001 Rev 1 0 27 Edgelech DISCOVER 4125 Software and starboard displays On screen zooming using the mouse is more efficient and affects these values See section 3 5 2 PALETTE This pull down menu allows the user to a pre defined color palette for the data that is being displayed This feature also allows the user to inverse the image by selecting the desired inverse color palette from the list LINK PORT AND STARBOARD This selection allows you to link both the port and starboard displays s
62. nel provides a comprehensive view of all the important system information This panel requires no input from the user NAVIGATION This section of the Status Display Panel will display all the navigation information that the software is receiving from the navigation input ALTITUDE This section of the Status Display Panel will display the towfish altitude in meters This feature requires the bottom tracking feature to be activated It is very important for the operator to periodically verify that the bottom tracking feature is tracking the bottom reliably If the bottom tracking feature is not properly tracking the bottom it will cause this display to indicate a false altitude value 3 3 LOWER INDICATOR BAR FEATURE DESCRIPTIONS Ping 46776 Lat 47 405176N Lon 122 14 4326 W Course 44 Speed 4 5 Date 11 2003 Time 17 50 53 Heading 17 8 Pitch 0 9 Rol 2 2 Altitude 25 3 Pressure 0 000 Mak 0 Free Space 13014 MB Playback GPS OFF Record OFF Power OFF AGC ON Signal NONE SSL SSH This Section of the Lower Indicator Panel displays the current ping number since the DISCOVER Software started for each of the 2 subsystems CURSOR PING When the cursor is positioned over the waterfall screen the System Ping number associated with the position will be displayed in this area MARK This section of the Lower Indicator Panel displays the current Event Mark number LAT LONG COURSE AND SPEED Displays current data from t
63. ng XTF eXtended Triton Format files for use with other 3 party topsides for post processing and mosaicing XTF File Output Real Time By default sonar data stored by the Discover software is in EdgeTech native format a modified Segy format JSF however the system will store data in XTF format if so enabled See Section 3 1 2 2 native JSF format also supports a higher dynamic range than is achievable in XTF format If XTF is required the systems current gain settings are applied to the native data before scaling and fixing to 16 bit XTF records Document 990 4125MAN 1001 Rev 1 0 29 File View Configuration Help onoff gt M Towfish Control Video Gains Display Disk Bottom Track Grids Status Track er CZ Z JM TrackBottom Detection Threshold St 23 E Holdoff oH do IT Tracking Indicator Indicator Offset pixels 024 Tracking range 22d C Starboard Mouse Ping 76324 Free Space 1691 MB Playback GPS OFF Record OFF Power LOW ON XTF File Conversion Playback To support XTF output of native format JSF recorded data the system provides simultaneous playback and recording capability The input file format MUST BE native format data JSF The output file format may either native or XTF format The data recording may be started and stopped at ANY time during and before or after playback and thus supports creating snippets of arbitr
64. o that all the changes that you make within this control panel will affect both channels Note None of these settings affect the stored data 3 2 4 DISK Towfish Control Video Gains Display Disk Bottom Track Grids Status Playback File Browsen Record Fie PERIERE Veiane Ping 0 Mak 0 Free Space 46727 MB Sonar OFF 6 5 OFF Record OFF NET OFF JY PLAYBACK FILE This feature allows the user to enter a path and filename or select Browse and look for a specific file to be replayed The VCR type controls below this box are used to control the selected data file You can also control this file from the VCR controls located in the Upper Shortcut Menu Document 990 4125MAN 1001 Rev 1 0 28 EdgeTech DISCOVER 4125 Software RECORD FILE This feature allows the user to enter a path and filename or select Browse and look for a specific directory and enter the name in the Select any Discover Data File pop up window The VCR type controls below this box are used to control the selected data file You can also control this file from the VCR controls located in the Upper Shortcut Menu 7 Nereid MP X File View Configuration Help not gt MN 23 Playback File 00000001 000000002 jst gt 11116 Wl 45 Complete Ping 123625 Free Space 1715 MB Playbatk Speed 3 2 4 1 XTF Support The Discover software provides support for writi
65. oming in and double right clicking the cursor over the target location Note For better target images the Discover image should be speed corrected 5 8 BOTTOM TRACKING Bottom Confirmation The Bottom Tracking confirmation window allows fine adjustment or manual adjustment of the seafloor location for proper target measurement To manually adjust the seafloor location left double click the area on the bottom tracking window where the bottom is thought to be Note The target image will be distorted if the bottom tracking was disabled or improperly tracking the seafloor in the area where the target was selected 5 9 REMARKS FIELD Remarks d s LH E REUS Insert annotation related to the target in the remarks field When loading a saved target the remarks field is populated with the target s associated annotation You can modify this text or type new text If you click SAVE any text that may be present here will then be associated as an annotation to the currently displayed target The annotation will be available for the currently displayed file whenever that file is opened Document 990 4125MAN 1001 Rev 1 0 60 2 EdgeTech DISCOVER A125 Software 5 10 TARGET CANDIDATES 5 11 Every time there is a right click action on the sonar data waterfall a candidate target is created Up to 7 candidates can be displayed at one time on the Target Logger If more candidate targets are generated the 6 most recent on
66. or 255 Name 48sgw20 Note Unidentified manmade target Latitude 3097 59 Longitude 233 266 Time Date 0 PositionLocked 1 Loc FILE FORMAT If the ASCII Logging is enabled from the Configuration menu a comma separated vector file is created The target ID Longitude Latitude and Time amp Date are always default Other information is added to the file by checking the appropriate box in the ASCII Logging Configuration menu Default File Togt ID Target Lon Target Lat Date amp Time 24 80 04 7962 E 26 06 3056 N 20021581609 Document 990 4125MAN 1001 Rev 1 0 54 EdgeTech DISCOVER A125 Software 5 4 5 2 All Fields Note The row was transposed to column for display purposes Tot ID 26 Target Lon 80 06 5379 Target Lat 26 05 5793 N Date A Time 20021581549 Channel Starboard Length 5 71 Width 9 08 Area 23 46 Height 0 82 Shdw Len 3 6 Shdw Rng 40 49 Altitude 10 7 G Range 38 7 Heading 103 59 Speed 5 4 Nav Lon 80 06 5434 E Nav Lat 26 05 5996 N S Range 40 1 Ping Num 13412 W spd 1500 Pitch 0 2 Roll 1 2 Hd Off 0 P Off 0 R Off 0 Aft Off 0 Stb Off 0 intra1000 jsf Remarks Navigation hazard 5 5 VIEW MENU Three sets of windows can be opened to display target position target dimensions and navigation offsets Document 990 4125MAN 1001 Rev 1 0 55
67. ory and open a target window If the target is saved you will also generate a mark file that can be imported into the Maptech Software and plotted on a chart Within the target window you can zoom pan save get the exact location and measure object dimensions and height from shadow information Document 990 4125MAN 1001 Rev 1 0 48 EdgeTech DISCOVER 4125 Software 5 2 1 WINDOW LAYOUT Discover Target Logger File Configure View SS Target Image Target Candidates Bottom Confirmation sc ottom Tracking Window Document 990 4125MAN 1001 Rev 1 0 Target Information x Target Lon 3 53 2658 E Target Lat 51 37 5886 N Altitude 26 47 Ground Range 90 95 P Slant Range 94 72 P Navigation Lon 3 53 3323 Navigation Lat 51 37 6152 N Heading 327 20 Ping Number 0 x Distance 0 00 Meters Y Distance 0 00 Meters Total Distance 0 00 Meters Length 10 70 Meters Width 7 36 Meters Area 107 80 Meters Shadow Range 94 55 Meters Shadow Length 7 20 Meters Height 1 98 Meters 49 Edgelech DISCOVER A125 Software 5 3 FILE MENU Action Performed Select Any Discover Target File Look in Targets ES Candidates amp Target 1 11 jpg Target 1 13 jpg iR Target marks32 txt Target 1 11 tot amp Target 1 13 tgt a Target Target 1 10 htm amp amp Target 1 12 htm Target 1 14 htm amp Target iz Target 1 10
68. saved and re loaded Exit Select Exit to exit the Discover Target Logger application Document 990 4125MAN 1001 Rev 1 0 50 Edgelech DISCOVER 4125 Software 5 4 CONFIGURATION MENU 5 4 1 TARGET SETTINGS Configure Discover Target Logger E Sequence Number Next Target Number Target Number Increment Target Log File Name Target Directory Path Next Candidate Number Candidate Directory Path Configuration Parameter Sequence Number Cancel C Targets T argetLog4 C Targets 1 C T argets Candidates Meaning or Action Performed This value is associated with the Target File Name The target name is Target X Y tgt Where X is the sequence number and Y is the target number Next Target Number This value is associated with the Target File Name The target name is Target X Y tgt Where X is the sequence number and Y is the target number Target Number Use this field to set the number increment for the file name or decrement if negative Increment Use this field to set the name of the Target Log File Refer to section 5 4 5 for a Target Log File Name RE description of the file Format Target Directory Path Use this field to set the directory where the target files will be saved The default path is C Targets Next Candidate Number Next candidate number to be used Document 990 4125MAN 1001 Rev 1 0 51 Edgelech
69. shrink scale as region is expanded for larger areas of coverage The user may customize all the colors of the Coverage Mapper display such as background targets grids towfish position high and low frequency coverage port and starboard etc Coverage marks for indicating both the High Frequency and Low Frequency System ranges if simultaneous dual frequency operation is supported by the towfish e g 4200 FS is also provided Document 990 4125MAN 1001 Rev 1 0 63 Edgelech DISCOVER A125 Software Target Position Cursor Range to Target Lat 26 3 9908 Lon 80 4 9969 Length 49M Direct measurement of distance between two points on the Mapper screen in meters is provided by using the mouse RIGHT click and drag function See above Other features and controls provided are e Zoom IN Zoom OUT e Re center screen on Fish Position e Pan Up Down North South e Pan Left Right East West e Measure Area or Length Users may also select the track items to be displayed or hidden such as Boat Position Fish Position Targets Coverage etc The coverage mapping feature uses significant amount of the CPU s resources The following are the recommended minimum system specifications e Display Dual Screen Support e Memory RAM 512 Mbytes minimum Document 990 4125MAN 1001 Rev 1 0 64 ZE EdgeTech DISCOVER A125 Software e CPU Pentium 4 6 2 OPERATION As the sonar data is being acquired
70. sing a flat bottom assumption The bottom track data may be overridden using the Manual entry box and checking the Override option SPEED CORRECTION ON Check Box This selection allows the user to toggle the speed correction on off A speed corrected image is adjusted in the along track dimension to make the vertical display pixel cover the same length of ground as the CURRENT across horizontal track pixel size to present a geometrically correct image I e square objects should appear square in the image Consequently changing the across track ZOOM factor Document 990 4125MAN 1001 Rev 1 0 13 Edgelech DISCOVER 4125 Software will automatically affect the vertical display zoom In order for the data to be speed corrected the system must be receiving a valid GPS NMEA input for speed over the ground or using manual speed override MANUAL ALTITUDE M This feature allows the user to manually force the Slant Range correction to use a certain fish altitude In order to make the software accept the new value you must enable the override selection box This feature is not recommended for use during real time data acquisition This feature is best used during playback in areas where it is difficult to automatically bottom track due to soft seafloor materials or suspended sediments in the water MANUAL SPEED Kn This feature allows the user to manually force the towfish speed to a certain value In order to make the software accept the n
71. t Depth Down 3 1 3 CONTROL MENUS FA EdgeTech Discover 4125D Dual Frequency Side Scan File View Configuration Control Help Advanced Sonar Controls gt External Device Controls Connection Information Diagnostic Information Sonar Diagnostics XTF Output Control Document 990 4125MAN 1001 Rev 1 0 21 Edgelech DISCOVER A125 Software The Control menus provide access to more advanced features not commonly used in the software 3 1 3 1 Advanced Sonar Controls Advanced Sonar Controls High Power Level be Low Power Level This pull down menu option allows access to the transmit Power Level controls POWER LEVEL FULL LOW OFF This allows the transmit power to be reduced in those circumstances where the full power setting 10096 overloads the receivers typically when running very close to a hard seabed Useful range for the control is typically 5096 for LOW to 100 for HIGH The Power Level warning indicator Lower Indicator Bar will turn RED when the power is NOT 100 This should only be used if you are sure that the transmit pulse amplitudes are too high and are overloading the receiver 3 1 3 2 Diagnostic Information This Status window shows the state of the connection between the Discover application and the sonar unit being controlled The display shown below is for the 4125 system Diagnostic Information Connection to Towfish Electronics Good Overflow Count 0 Power
72. t numeric may have leading negative sign Represents horizontal axis of plane Y coord b Character label for Y Must be valid ascii character but value is ignored hhmmss ss Time of position fix HoursIMinuteslSeconds decimal 2 fixed digits of hours 2 fixed digits of minutes 2 fixed digits of seconds and a variable number of digits for decimal fractions of seconds Always pad with leading zeros NOTE The hhmmss ss field is optional This format provides for high accuracy mm level positions over smaller X Y ranges from 999 999m to 999 999m Document 990 4125MAN 1001 Rev 1 0 40 Edgelech DISCOVER 4125 Software 4 4 3 GGU GEOGRAPHIC POSITION X AND Y COORDINATES X and Y coordinates of the present vessel position in decimeters time of position fix and status NOTE GGU string has a similar format as GXY but provides support for larges planes GGU xxxxxxxx x a yyyyyyyy y b hhmmss ss hh lt CR gt lt LF gt XXXXXXXX X Floating point numeric may have leading negative sign Represents horizontal axis of plane X coordinate a Character label for X Must be a valid ASCII character but value is ignored yyyyyyyy y Floating point numeric may have leading negative sign Represents vertical axis of plane Y coordinate b Character label for Y Must be a valid ASCII character but value is ignored hhmmss ss Time of position fix HoursIMinuteslSeconds decimal 2 fixed digits of hours 2 fixed digits
73. tion allows the user to select the desired spacing between the Horizontal Scale Lines VERTICAL This selection allows the user to toggle the Vertical Scale Lines On or Off These Scale Lines will work with or without a navigation input INTERVAL METER This selection allows the user to select the desired spacing between the Vertical Scale Lines SCALE This selection allows the user select the units for the Horizontal and Vertical Scale Lines Note Scale Lines are for the video display of the data only and do not affect the recorded data in any way 3 2 7 PRINTER Towfish Control Video Gains Display Disk Bottom Track Grids Printer Status Gain 98 0 0 m Frequency Low SSL 0 SSH 0 Lat 0 00 0000 Lon 0 00 0000 E Course 0 Speed 0 0 Date Time Heading Pi Mark 0 Free Space 43326 MB Using the check box and drop down menus you can setup the printer Several printers are supported Refer to the Printer Configuration Section 1 1 1 2 3 2 8 STATUS Towfish Control Video Bains Display Disk Track Printer Grids Status Navigation Towfish Sensors Lat 0 00 0000N Course 0 Date NA Heading NA Pitch 0 0 Altitude NA Lon 0 00 0000E Speed 0 0 Time NA Roll 0 0 Ping 0 Mak 0 Free Space 4873 MB ETE GPS OFF CERES Power FULL AGC ON Document 990 4125MAN 1001 Rev 1 0 32 Edgelech DISCOVER 4125 Software The Status Display Pa
74. to this connection will return the Windows message Hardware Error 2 Cannot Ping Towfish Electronics A problem with the Ethernet laptop and or the towfish is not established OR the towfish computer has not booted These can both take about 1 minute and 20 seconds after power on to be established 3 Check the Socket setting in the Discover Configuration Menu under Network This connection should be established about 1 min 30 seconds after towfish power on 3 1 3 3 Sonar Diagnostic Information In addition to the diagnostics mentioned before there are additional diagnostics the can be run to help troubleshoot problems with the sonar system Document 990 4125MAN 1001 Rev 1 0 24 Edgelech DISCOVER A125 Software Sonar Diagnostics All Diagnostics SB Transducer Output EAE SSL Port Transducer Output SSL Starboard Transducer Output Power Amp Loopback Interface Board Health Sensors eg 48 Volt Power Internal Temperature Sensor 3 1 3 4 Controls XTF Controls High 17 Use Display Gains Gen dB 7 Starboard Gain TH New File on Range change Low E Use Display Gain d8 7 Starboard Gain a8 TH This Dialog window provides user control over the production of the XTF recorded data if it is enabled See 3 1 2 2 USE DISPLAY GAINS Check Box The XTF file format only supports 16 bit data whereas the native EdgeTech format JSF is 16 bits with a block
75. y system are housed in a watertight plastic carry case Connection to the Discover Processor usually Laptop is made through an Ethernet cable or wireless LAN In the 19 rack mount configuration the towfish power supply and digital telemetry system are housed in19 rack The internal electronics are identical Both configurations use a 6 wire tow cable for power and data communications Navigation and auxiliary inputs are all made to the Processor hosting the Discover Software application The software environment for these 2 cases is shown in the diagrams below Document 990 4125MAN 1001 Rev 1 0 3 EdgeTech DISCOVER A125 Software Ethernet based Network Connection Discover Acquisition Application Tow cable 19 rack or 4125 Towfish me p gt Portable Topside VF Network address 192 9 0 101 m Topside Processor or Laptop 1 2 4125 HiGH DEFINITION SONAR 1 2 1 GENERAL The 4125 system performs as conventional simultaneous dual frequency sidescan sonar using linear FM chirp pulses for improved range and signal to noise ratio operation The systems array elements are configured and utilized to provide the best along track resolution of the system The system may be operated as a single frequency system or as a simultaneous dual frequency system Independent range operation for the 2 frequencies is also provided See Section 2 1 2

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