Home

Discover 4200 users software manual

1. Dept 41 Cursor Ping 84034 Mark G Free Space 269932 MB Pieyhack GPS OFF Recod OFF Poe OFF OFF Signal NONE GRIDS This sections allows the grids for both high and low can be altered 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 Document 990 0000047 1000 Rev 2 0 48 INTERVAL METER This selection allows 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 Notes e The Discover Software is written predominately for the metric system this is the only are where the user can choose to display or use yards or feet e 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 Tr n amp mit Video Gains Display Disk Tr amp ck Grids Freer Signal Printer On Gein dE wH Frequency Law Let Lom
2. 6 6 ICONS THE TASKBAR aed a 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 0000047 1000 Rev 2 0 99 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 Open from the main menu Save icon This saves the currently loaded target window The target name is Target X Y tgt Where X is the sequence number and 1s the target number The sequence number 15 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 1s saved 3 files are generated Target X Y tgt Actual Sonar data around the target Target X Y jpg Image of the target 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 has not been saved yet or from the target directory if it was saved and re loaded Lenght icon Press this icon then right click and
3. Document 990 0000047 1000 Rev 2 0 30 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 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 SSL record when the SSH system fires Example 2 Sidescan high 50m Ping rate 15 sec SidescanLow 100m Divisor 1 The SSL will fire at 15 sec and will only display 50m of data 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 1s normally less than the SSL range There will now be no interference between systems but the SSH system will run slowly External If selected the system will ONLY trigger itself in the event of an externally supplied trigger signal The external trigger is user supplied at the topside via the Telemetry interf
4. Document 990 0000047 1000 Rev 2 0 69 Edgelech DISCOVER 4200 MP PROCESSOR 5 2 1 WINDOW LAYOUT FA Measure Length Right Mouse ae PEE 4 Re Center Screen Lon 80 5 10 Lon of imc i Pan Left Up Down Right Measure Area Right Mouse Zoom In Out Open Mapper File Lat 26 4 0934 Lor 4 8754 5 2 2 CONTROL ICONS LEFT TO RIGHT Start 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 0000047 1000 Rev 2 0 70 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 5 2 3 FILE MENU NN Action Performed Click this to clear the screen and start a new file Select Discover Coverage File m 20
5. 06 Dept 41 Cursor Ping 83954 Mark 6 Space 269932 MB Playback GPS OFF Record OFF Pore OFF AGCO 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 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 selected to be the time origin or the sea floor See Sound Speed entry above MAX 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 compens
6. 4 5 C 62 dO 0027 p ner enn reer eee 63 Document 990 0000047 1000 Rev 2 0 4 ses 66 5 1 WIND 66 52 27722717 69 3423 Wy HNC OW 70 22 Control Icons Leftto 70 2 2 9 P NS I geese 71 5 2 4 N TE 72 5 2 5 VN 72 RG OG GR 74 6 1 CLOT __ _____ 74 6 2 _ ____ _______ 74 6 2 1 Window 75 2508 7 77 5 EEEO E A E EE E OT 76 6 4 Con eraon MONU sisirin aea y 6 4 1 TeS 77 6 4 2 OD AO 78 6 4 3 80 6 4 4 Maptech Mark file conse ccacarenctes 80 6 4 5 Bor 80 e n 81 SUN SIUE 81 6 5 T 62 6 5 1 E 82 6 5 2 TVA ASICS MS E NE 93 6 5 3 IAAL 94 0 0 LCOS OM TO Taskbar ane RCRUM 65 O 87 Go __________________ ___ 87 OS TE E EA 87
7. Couse 0 Speed UO Heading Rich UU 909 0 000 PRINTER ON This toggles on and off the printer GAIN DB Offers additional adjustment to the gain positively or negatively for printout This gain selection only affects the printout 3 2 8 STATUS Towfish Control Video Gains Display Disk Bottom Track Grids Printer Status signal Navigation Towfish Sensors Lat 29 00 8989 M Courses Date 14 2005 Heading 298 7 Pitch Ambient 30 980 Lon 90 16 3935 W Speed 3 9 Time 19 42 36 Altitude Rol 20 4 1 SSL 844256 SSH 84426 Let 29 00 8989 Lon 50 16 3335 W Course 322 Speed 33 Date 14 2005 Time 13 42 36 Hending 2387 Fitch 01 Rol 20 Depth 41 Lursor Fing 8473 Mark 58 Free Sete 2569312 Li The Status Display Panel 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 Document 990 0000047 1000 Rev 2 0 49 Edgelech DISCOVER 4200 MP PROCESSOR TOWFISH SENSORS 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 t
8. Free Space 1715 MB Playback GPS OFF Record SEF Power LOW ON Ping 123625 Playback Speed Filename Menu 3 2 4 1 1 XTF Support The Discover software provides support for writing XTF eXtended Triton Format files for use with other 3 party topsides for post processing and mosaicing XTF File Output Real Time Document 990 0000047 1000 Rev 2 0 45 Edgelech DISCOVER 4200 MP PROCESSOR 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 0 The native format also supports a higher dynamic range than is achievable in XTF format If XTF 1 required the systems current gain settings are applied to the native data before scaling and fixing to 16 bit XTF records 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 arbitrary length from the input data file that may support only small screen shots of valuable or interesting data or the entire input file XTF format The navigation data and roll pitch motion
9. Furthermore unlike the multibeam approach tow speed or bottom speed input is not required at any time for the basic image formation Speed input is required only if the image is to be speed corrected Document 990 0000047 1000 Rev 2 0 13 1 3 2 TRANSMIT SIGNALS MP X transmit signal are linear frequency modulated FM chirp pulses with near gaussian amplitude weighting The inter pulse discrimination rejection required is achieved by constraining the energy for each pulse to unique non overlapping frequency bands The total bandwidth available for the pulses 15 limited by the array s combined transmit receive tx rx sensitivity Figure 5 indicates the pulse bandwidth allocation for 2 pulses The center frequency of the array s combined Tx Rx response is at 10 The available spectrum is evenly divided between the 2 pulses A and B with minimal guard band separation The pulse energy must be constrained to lie inside the desired regions A and B but there will be some leakage or sidelobe levels as shown in the diagram These are kept to a very low level by using suitable pulse shaping Transmit Pulse Frequency Content 2 pulses Useful Array bandwidth Frequency A 4 pulse frequency allocation is shown in Figure 6 1 3 3 ARRAY CONFIGURATION The difference between the transmit voltage and the received echo levels in a system using piezo electric transducer elements is very large Typical transmit levels may be s
10. MRO LL MQ MQ QO QQQAL MO QQ QQQAL MQ MOQ QA gt NNNNNNNNNN NYS NNNNNNNNNN NNNNNNNNNN NNNNNNNN NNNNNNNN Missed target area 11 ly be specified by the survey number of hits on a target to ive minimum 2 0 ify a Rev 1 t may alternat 1mi Above Critical Speed 17 t where it 1 typical to spec range 1n meters H hits on target L Target 5 R 990 0000047 1000 requiremen ensure suitable probability of detection v L C 2 194 H 4 The maximum tow speed Then where Document DISCOVER 4200 MP PROCESSOR Edgelech A speed in knots V For this condition 4 8 knots for a meter target at 100m range scale 3 hits on requirement See common NOAA survey a which 15 target http usace army mil inet usace docs eng manuals em 1 1 10 2 1003 c 12 pdf The tow speed may be increased in both cases if the effective ping repetition rate of the sonar could be increased independent of the range setting The maximum speed allowed for 150m range is 3 2 knots Equation 1 The be
11. Electronics 4200 Diagnostic Connected Cable Current mA 97 Fish Power Trigger Negative O 0O O WLAN MLAN DSL 400V Surface C 23 Supervisor 3e In this case the software communication between the topside and the towfish has been lost no TCP IP PING connectivity The Cable Current 15 reported as 97mA Normal so the towfish 1 attached to the cable and drawing normal power This indicates either telemetry problem possibly due to cable noise excessive length or signal attentuation or possibly a complete failure of the towfish computer to boot properly Sometime a power cycle of the topside interface unit will correct this error Document 990 0000047 1000 Rev 2 0 37 Diagnostic Information Problem Cannot Ping Towfish Electronics 4200 Diagnostic Connected Cable Current mA 2 Surface C 24 Fish Off Under Current Trigger Negative Supervisor 3e OOO WLAN MLAN DSL 400V This case looks very similar to the previous case but there is one crucial difference The cable current is excessively low 2mA and the system reports lower left that the Fish power has been Turned Off as the cable current was detected to be undercurrent For safety at all times the cable current is continuously monitored and if detected to be too low cable disconnected or too high cable loose in the water the power is automatically turned off To help determine the cause of the
12. 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 Document 990 0000047 1000 Rev 2 0 63 the signal HyperTerminal one of the programs which come with Windows is 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 Click Start then Programs then Accessories then Communications then HyperTerminal In the window that opens titled HyperTerminal double click on the icon which says the one 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
13. JTarget 1 15 htm amp amp Taraet Open File name Files of A Files Discover Taraet File 2 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 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 The target name 1s 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 Save appended to the original target file name Each time a target is saved 3 files are generated Target X Y tgt Actual Sonar data around the target Target X Y jpg Image of the target 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 has not been saved yet or from the target directory if it was saved and re loaded Document 990 0000047 1000 Rev 2 0 76 Eggelech DISCOVER 4200 MP PROCESSOR Select Exit to exit the Discover Target Logger application 6 4 CONFIGURATION MENU 6 4 1 TARGET SET
14. Section Navigation Configuration Baud Rate 4800 2 2 151 gt 2 GPATEAA 2 29 5 15 OK GPVTG 124 5 130 3 0 0 0 0 4 BAUD RATE This selection allows the user to select navigation input port baud rate The default is 4800 Serial Port Selection is made through settings in the Discover_Defaults jni DiscoverLast4200 MP 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 1 5 Navigation Offsets Navigation Fixed Offsets Sensor Displacement Hull Mount Adjustments Input Navigation Correction Aft Offset in meters Pitch Offsetin degrees Nose up is positive X Offset in meters 0 00 Starboard Offset in meters Roll Offsetin degrees Port side up is positive Y Offset meters Heading Offset in degrees Latitude Offset degrees Depth Offset in meters up is negative Longitude Offset in degrees Navigation Offsets are used only for target location determination using the Target Logger These values are NOT recorded with the data only the raw navigation data from the GPS or Navigation Interface such as Hypack 1s recorded to disk The navigation information displayed in the Status Tab 1s the raw navigation information There are 3 sets of Fixed O
15. Start to slow down to a trickle Document 990 0000047 1000 Rev 2 0 97 10 CUSTOMER SERVICE 10 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 4 Little Brook Rd West Wareham MA 02576 508 291 0057 Fax 508 291 2492 After Hours 508 942 8043 Email sales 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 0000047 1000 Rev 2 0 98 10 2 Returned Material Authorization All Returned Material It is necessary to obtain a Returned Material Authorization RMA number prior to returning any equipment to EdgeTech This is to assist EdgeTech to recognize yo
16. allows the user to enter a fixed offset for the pitch information coming from the towfish ROLL OFFSET PORT SIDE UP IS POSITIVE This selection box allows the user to enter a fixed offset for the roll information coming from the towfish Document 990 0000047 1000 Rev 2 0 20 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 1 6 Target Logger Target Configuration If this box 15 checked then a mouse RIGHT click on the scrolling display window will invoke the Target Logger application and transfer the selected region to the Target Logger for measurements and analysis See Section 5 Target Logger 3 1 1 7 Triggering Options Trigger Configuration Internal Divisor 1 E External Divisor 1 m External Delay ms 0 The 4200 MP system supports either single frequency or simultaneous dual frequency operation
17. com These systems provide advanced survey functionality such as real time mosaics and pipeline tracking Document 990 0000047 1000 Rev 2 0 18 Edgelech DISCOVER 4200 MP PROCESSOR 2 GENERAL DATA FLOWS 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 o Display Processing e E M TVG Gain Palette Tow Fish S Interface x TCP IP Source m Acquire Input Data Record Processing XTF Playback data Record Processing JSF 72 O 5 Oca di ERE d Nav Input Direct to Display Processing Com Port Primary Data gt Record Playback Discover Processing Diagram Document 990 0000047 1000 Rev 2 0 19 21 2 1 1 DATA SOURCES All 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 2 1 2 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 applied such as scree
18. for the Discover application or any other user named jni file This is a simple text file with many system settings and parameters to set the assigned port edit the file and make the changes as below The section and syntax for the serial port assignment and configuration is Nav0O Baud 4800 Enable 1 The file is large so it is easiest to search for the Keyword NavO to find this section The baud rate and port number to use are set here Valid Baud rates are 4800 to 19200 depending on your NMEA source Document 990 0000047 1000 Rev 2 0 56 The Discover software will support up to 3 serial ports for connecting to any sources of these serial data strings The messages may come in on any enabled port or they may all be input via one port No distinction or priority 1 given to any port over another It 15 safest to only enable those ports you need that are supplying valid data The format for the remaining ports is as above with the keywords 1 Nav2 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 XXX Degrees Minutes decimal 2 fixed digits of degrees 2 fixed digits of minutes and a variable number of digits for decimal fractions o
19. hh CR LF Latitude Document 990 0000047 1000 Rev 2 0 58 Character label N S E W Longitude q Quality indicator nn Number of satellites 1n use d d Horizontal dilution a a Altitude g g Geoidal separation meters e e Age of differential data ITIT Reference Station ID 4 4 5 RECOMMENDED MINIMUM SPECIFIC LORAN C DATA Position course and speed from a Loran C receiver RMA A III ILa yyyyy yy a d d e e f f h h j k hh lt CR gt lt LF gt For fields see NMEA 0183 Specification 4 4 6 RECOMMENDED MINIMUM SPECIFIC GNSS DATA Time Date Position course and speed provided from a GNSS receiver RMC hhmmss ss A III lLa 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 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 CR LF X X Floating point numeric 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 ll zz hh CR LF Document 990 0000047 1000 Rev 2 0 59 hhmmss ss Universal Time Coordinated UTC HourslMinuteslSeconds decimal 2 fix
20. of this 15 reduced range resolution since range resolution rr 15 proportional to pulse length 7 2 rr This longer pulse also has narrower bandwidth so the full available bandwidth is NOT being used The MP X has the advantage of always fully utilizing the available system bandwidth At long ranges this bandwidth 15 exploited to achieve a higher update rate exactly when it is needed In general the following rule of thumb is valid At shorter ranges fewer pulses with higher bandwidth are used and at longer ranges more pulses with lower bandwidth should be used This can be further modified by considering the tow speed If the tow speed for the survey 15 going to be very fast ie gt 8 IOknots then the image will be greatly enhanced by employing more pulses 4 albeit with less bandwidth However if the survey will be conducted at slows speeds 1 lt 4 knots then the image will be better using less pulses but with more bandwidth e g 2 pulses 1 4 REMOTE CONTROL SOCKET The system may be optionally controlled in a limited manner On OFF Range selection and data recorded by party Topside controller systems This is accomplished a second dedicated Ethernet port on the Discover processor These 3 rd party systems are available from Triton Elics International ISIS see www tritonelics com and CodaOctopus Ltd Document 990 0000047 1000 Rev 2 0 17 Coda GeoSurvey See www CodaOctopus
21. on the towfish 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 and the target 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 and the beginning of the target shadow Check this box to enable output of the measured target shadow lenght Check this box to enable output of the towfish speed at the location of the target This information is from the GPS or Navigation input Check this box to enable output of the Sound speed used for range calculation The default value is 1500m s This values is changed from the Discover software Check this box to enable output of the Pitch Roll Aft and Starboard offsets as inserted in the Discover software during acquisition Check this box to enable output of any remarks added to the target file Check this box to enable output of the ping number at the location of the target Check this box to enable output of the sonar data file name associated with the target Document 990 0000047 1000 Rev 2 0 79 6 4 3 NAVIGATION OVERRIDES Navigation Overrides X Use Course as Heading If the sonar towfish 1s not equipped with a heading sensor check this box to use the survey ve
22. 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 3 1 2 4 Document 990 0000047 1000 Rev 2 0 46 3 2 5 BOTTOM TRACKING File View Configuration Help ono gt M 184 21 Ml EUR ____ pe 3 an IN 70 O ts 20 Towfish Control Video Gains Display Disk Bottom Track Grids Status Track V TrackBottom Detection Threshold 04 23 1 Holdaff M Tracking Indicator Indicator Offset pixels 025 Tracking range 206 Mouse Ping 76324 Free Space 1691 MB GPS OFF Record OFF Power LOW ON 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 I
23. you can Zoom pan save get the exact location and measure dimensions and height Document 990 0000047 1000 Rev 2 0 74 Eagelech DISCOVER 4200 MP PROCESSOR 6 2 1 WINDOW LAYOUT Discover Target Logger f File Configure View Tiaa CC Target Information x Target Lon ale aaea E Altitude 26 47 Ground Range Slant Range 94 72P Navigation Lon 37533329E Target Navigation Lat 51 37 6152 N Heading 327 20 Candidates rds Ping Number 0 x A Distance 0 00 Meters 0 00 Meters Total Distance 0 00 Meters Length 10 70 Meters Width 7 35 Meters Area 107 80 Meters Shadow Range 94 55 Meters Shadow Length 7 20 Meters Height 1 88 Meters Y Distance Discard Bottom Confirmation Accept Bottom Tracking Window Document 990 0000047 1000 Rev 2 0 75 6 3 FILE MENU Action Performed Select Any Discover Target File Look in E Targets E Candidates A Target 1 11 jpq Target 1 13 jpg Target marks32 txt Target 1 11 tgt fa Target 1 13 tgt Target Target 1 10 htm Target 1 12 htm amp jJTarget i 14 htm 8 Target 1 10 Target 1 12 1pg 1 14 Target Target 1 10 tgt fa Target 1 12 tgt f Target 1 14 tgt __ Target amp Target i 11 htm Target 1 13 htm amp amp
24. 05 122 1025946 20051 216184622 28 20051213200623 20051219222851 2005 1216164826 Targets es 20051219222816 20051214185739 20051219222410 E 20051213204716 20051216193205 E 20051213203000 es 20051 216190428 E 20051213200859 Files of type Discover Coverage Files Cancel Select a file for Display Select Exit to exit the Discover Coverage Mapper application Document 990 0000047 1000 Rev 2 0 71 5 2 4 CONFIGURATION MEN Action Performed Select Folder Look ir Data Targets Folder Selection Folder name IAE dgetech D ata This allows selection of the folder for storage of Coverage Mapper files When selected the display zoom factor 15 adjusted to ensure the Automatic Zoom l Sep pe towfish position 1s displayed on screen When selected the display zoom factor is kept constant and the display Automatic Pan ee ee is panned to ensure the towfish position is displayed on screen 5 2 5 VIEW Configuration Parameter Toolbar Toggles display of the shortcut toolbar on the top of the screen Ship Position Toggles display of the ships position on off Document 990 0000047 1000 Rev 2 0 72 Meaning or Action Performed Fish Position Toggles display of the tow fish s position on off parameters Re Center Display Forces the display to be re center
25. 2 1 3 Record w ile Play Dack 20 3 22 3 1 3 207 cate 23 3 1 1 23 polt DEPRE _____ 6___ 23 ILL 25 SN DN 26 SN ME arsi oT 28 oL 28 EU 30 S SN 30 XN MEN I o PRINT 32 LEL Seral PONS MIU 32 CalibfatiODcuscsaosu cimi penu gt 33 3 1 11 LODI dT 33 SN NP COnN UG EE 35 Document 990 0000047 1000 Rev 2 0 3 3 1 2 1 Advanced Sonar Controls Rm 35 pd 36 3 1 2 3 Diagnostic 36 Sd XE 8 __ __ _ _ 39 3 1 3 Discover 4200 MP restricted 40 S Lower Control Panel Feature 40 3 2 9i L 40 922 42 2 253 BIOL T ees 43 3 2 4 p 44 __ 45 OE 47 3 2 6 tuu 48 S NATI TT LEM 4
26. 9 3 2 8 E 49 2 29 VUL NP 50 3 8 Lower Indicator Bar Feature 50 3 4 0 0 ORT TT m 51 3 5 Screen Clicks and Other SHOPICUIS viscsssecssccessvevsciicsenssvsveancaasersscedasevacssavaneeriecsaaassersss 5I 3 5 1 Booo T S 51 392 VAA E A 53 4 NAVIGATION amp ANNOTATION INTERFACE 55 4 1 NMEA Approved Sentence 5 55 4 2 AE ENEE EAE 56 da 56 0 TA ens ec 57 4 4 1 GLL Geographic Position 57 4 4 2 GX Y Geographic Position X and Y 57 4 4 3 GGU Geographic Position X and Y 58 4 4 4 GGA Global Positioning System Fix 58 4 4 5 RMA Recommended Minimum Specific Loran C 59 4 4 6 RMC Recommended Minimum Specific GNSS 59 4 4 7 VTG Track Made Good and Ground 5 59 4 4 8 OY WUE ome A A 59 4 4 9 HDG Heading Deviation and 60 44 10 EVT Event amp Annotation EdgeTech 61 44 11 EMA Event Set Mark and Annotation EdgeTech custom 61
27. 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 1s 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 When finished viewing the screen select Exit from the File menu When asked 1 you want to disconnect now click on Yes When asked if you want to save session click on No Document 990 0000047 1000 Rev 2 0 64 Repeat the above steps for other replacing COMI with COM2 COMG 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 that 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 cont
28. Calibration Picture 1 Pulse Calibration Good Calibrated Data Document 990 0000047 1000 Rev 2 0 89 Horizontal banding as seen in the bottom half of the screen shot above is indication that the pulse calibration settings are imperfect and calibration is required All that 1s required to properly recalibrate a Pulse Set is for the system to be towed over a reasonably flat section of semi uniform sea bottom at 5 to 15 meters altitude Note each Pulse set of the system has its own set of calibration parameters You may only need to calibrate those pulses you will use or you may choose to do each set in turn To calibrate a Pulse follow the steps below Access the IConfigurationIMultiPulse Calibration dialog tab via the pull down menus Select an area on the seafloor safely AFTER the first return with a minimum of strong features 20 to 25 m in the example and not too close to the far range extremity gt 60m for 410Khz and 120m for 120Khz frequency Set the across track distance in Seafloor Offset to the start of the selected area 20 25m for the sample data shown Set the width of the selected area in Region Size M A region about 20m width is sufficient for the image above although 30 40 would also suffice Press the Reset Power button to change the system to use full pulse power for both pulses Allow the system to gather statistical data for about 5 10s must be running normally P
29. DISCOVER 4200 SIDE SCAN PROCESSOR SOFTWARE evision 2 0 February 2008 A Email sales Web http www EdgeTech com 4 Little Brook Road West Wareham MA 02576 Tel 508 291 0057 Fax 508 291 2492 141 Holland Drive Suite 1 Boca Raton FL 33487 561 995 7767 Fax 561 995 7761 TABLE OF CONTENTS 1s TNE RODUC TION iciccrccscscsvssscvasvesscsasadescsacnccscssennsschassascesssasascansaacacatsensscessessaesasedsscaacescsess 7 1 1 DI IT 1 4 High Definition and High Speed Modes sess 9 1 2 1 High Definition Mode HDM scssssscsicossswonsnascncsdnas 9 1 22 Hizio pecd Mode HSM m 9 1 3 Trona S EI ovr ON T 10 1 3 1 Dar TO M 10 1 3 2 Tenn CNET 14 1 3 3 COMMS 14 1 3 4 Be CONV El PRO Ce 15 koa Range Pulse Bandwidth 16 1 4 Remote Control nnne sena e ssa rrr sess nnn 17 2 GENERAL R 19 2 1 KO JOBS setenta EA NAA N P de Und 20 2 1 1 20 Zila Recording ol raw AA 20
30. Mark 57 Free 269912 MD Playback GFX OT Record OFF aM Power OFF Signat NONE Document 990 0000047 1000 Rev 2 0 40 Edgelech DISCOVER 4200 MP PROCESSOR The 4200 MP system provides two basic modes of operation these being conventional simultaneous dual frequency operation and the other being single frequency dual pulse operation These are referred to as High Definition Mode HDM and High Speed Mode HSM respectively In the HDM mode the best possible along track resolution is achieved using conventional single pulse operation In the HSM mode the system s ability to simultaneously transmit and receive signals is exploited to achieve double the update rate for double the tow speed operation while still meeting survey requirements for specified hits on target The range for each frequency is retained when changing modes High Definition Mode If any of the following 2 selections are active they will preclude the use of the High Speed Mode HF ON This selection allows the user to toggle the high frequency system on and off If on the system will fire in accordance with the trigger selection LF ON This selection controls the On OFF state of the Low Frequency system in HDM mode These 2 controls are independent and may be both Off both On or only one enabled RANGE M These selections allow the user to select the operation range for each frequency Please note that the HF system is l
31. N Toggle This selection allows the user to correct for slant control during printing ACTIVE BANNER Toggle This selection allows the user to show the banner at the footer of the data record on the printout 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 DEPTH SCALE Toggle This selection allows the user to ACTIVE Actvates the Depth Scale on the printout e LABELS Toggles on off the Labels on the printout e BACKGROUND Toggles on off background of the depth scale on the printout e INVERT SHADE When selected inverts the shade of depth scale on the printout ANNOTATION Toggle This selection allows the user to ACTIVE Activates the annotation on the printout e TEXT Toggles on off the annotation text on the printout e EVENT NUMBER Toggles on off the event number on the printout BACKGROUND Toggles on off background of the annotation on the printout e INVERT SHADE When selected inverts the shade of annotation on the printout Document 990 0000047 1000 Rev 2 0 27 PORT Drop Down Menu This selection allows the user to select the proper printer interface 3 1 1 4 Navigation Setup See also Navigation Interface
32. NDICATOR This Feature is not currently implemented DETECTION THRESHOLD Display Entry This selection allows the user to limit the bottom tracking to a user defined percentage of the sonar signal display window This setting will vary depending on bottom types but a good place to start 15 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 Document 990 0000047 1000 Rev 2 0 47 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 not currently implemented 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 featur
33. OCESSOR 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 15 active only that sub systems window is shown maximizing the area available 3 1 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 EdgeTech Discover 4200 MP File View MW Control Help Display Record ZI gt Printer Navigation k Target Lagger Trigger Network Serial Ports MultiPulse Calibration Alerts Lavback 3 1 1 CONFIGURATION MENUS The Configuration pull down sub menu 15 shown above NOTE Not all Discover versions implement every feature described herein If an item is not applicable to all versions this 1s noted as a footnote to each control Each sub menu item 15 described below 3 1 1 1 Display Setup Display Configuration Start High e Origin SeaFloor Slant Range Correction On Speed Correction On TVG Start Low e Origin Slant Range Correction On SeaFloor Speed Correction On Document 990 0000047 1000 Sound Speed M sec 1500 Mark 55 EE 95 Maximum w Subsample Method Temperature Source Bottle Water e Ambient C None Manual Altitud
34. OIO 88 OJI HIM File 88 Te CALIBRATION prom 89 Sa OVYERLOS D a E EE E AEA E EEE 93 9s COMPASS CALIBRA TION 94 Document 990 0000047 1000 Rev 2 0 5 9 1 Calibration Method 2 0 ccccccccccccccccccuceccecuccecuccecucccceceecscscscscusescusescecuscscasescusescesseesnees 94 TO CUSTOMER SERVICE 98 POC ass sos ret vase is see eis rns ees a se 98 10 2 Returned Material Authorization cccccccccccccccccuccccecscccuccccuccscucescucescscsescusescuceseeceses 99 Document 990 0000047 1000 Rev 2 0 6 1 INTRODUCTION This manual describes the operation of EdgeTech s Discover side scan acquisition software as configured for the 4200 MP series side scan sonar The Discover software is also used in slightly different configurations to support other EdgeTech side scan 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 4200 MP topside processor may be used with 2 possible system configurations 1 Using a 4200 Rack mount Topside 2 Using a 4200P Portable Topside In the 4200P portable configuration the towfish power supply and digital telemetry system are ho
35. Panel on MPX MMUX C on MPX MMUX 58 D on MPX MMUX C Shared Documents Administrator s Documents 9 amp Network Places Recycle Bin DE View Favorites Tools BACKUP AIR25 VBX CMDIALOG VBX DEISL1 ISU GRAPH VBX 52 GSW EXE 5 GSWDLL DLL HIDATA TXT PCDEMO EXE PCDEMO GID PCDEMO HLP 5 INI PCDEMO LOG 2 PDQCOMM DLL THREED VBX gt VBDB300 DLL gt vBOA300 DLL gt VBRUNSOD DLL VSFLEX VBX VB VSVIEW VBX start D XEdgetechHMR3000 The following startup banner should appear 8 Sonar Remote 192 9 0 101 Remote Desktop D Edgetech HMR3000 Folders Desktop My Documents 4 My Computer E WINXPE C SONAR D DATA El Edgetech J HMR3000 JSTAR Misc SSSSonar Utilities RECYCLER gt Control Panel A on MPX MMUX C on MPX MMUX D on MPX MMUX Shared Documents Administrator s Doc Q My Network Places Fal Recycle Bin CI BACKUP Hae EH 9 Ed Start 3 D Edgetech HMR3000 53 Graphics Server Document 990 0000047 1000 AIR25 VBX CMDIALOG VBX ri DEISLLISU Initial Paramete Comm Baud Rate File Folder 126 KB VBX File 19KB VBxFile Rev 2 0 File Folder File VBX File ISU File VBX File Application Application Extension Text Document Application GID File HLP File Configuration Settings Tex
36. RATION Log File Confguration ASCII Logging Channel Altitude Ground Range Shadow Length 1 Column Headers v Length Sonar Position Slant Range Navigation Offsets pe Width Heading Shadow Range I Remarks Maptech Output M Area Pitch Sound Speed Ping Number Height Roll Sensor Speed File Mame Configuration Parameter oe logging to the Target log selected in the Check this box to enable output of measured target surface area Document 990 0000047 1000 Rev 2 0 78 Meaning or Action Performed g o S DISCOVER 4200 MP PROCESSOR Height Altitude Sonar Position Heading Pitch Roll Ground Range Slant Range Shadow Range Shadow Length Sensor Speed Sound Speed Navigation Offsets Remarks Ping Number File Name Check this box to enable output of calculated target height Check this box to enable output of sonar height from the seafloor Note Proper bottom tracking is required to get meaningful altitude information Check this box to enable output of the raw towfish navigation information before any offset implementation Check this box to enable output of Sonar towfish heading at the target location This 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 information is from the motion sensor if present
37. SSOR EdgeTech Discover 5604 xim File Configuration Help gt 10 27 Towfish Control Video Gains Display Disk Bottom Track Grids Status Detection Threshold 2 36 d Holdoff 0 Tracking Indicator Indicator Offset pixels 024 Tracking range 025 Track Port Starboard Mouse Ping 27936 0 Free Space 45710 MB Playback BPS OFF Record OFF Z 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 0000047 1000 Rev 2 0 52 oEdgeTech Discover 5604 File View Configuration Help gt ono 10 27 v Tracking Range nn JUG Fe He Towfish Control Video Gains Display Disk Bottom Track Grids Status Iv Trackiotom Detection Threshold 2 3624 Holdoff M 02 Tracking Indicator Indicator Offset pixels 0 Tracking range 102 Ping 28431 0 Free Space 46710 MB Playback GPS OFF Record OFF Summary The search routine looks for the first sample that passes the operator entered threshold value within the track window and outside of the Holdoff range displayed as red dash lines in the scope display The current tra
38. TINGS Configure Discover Target Logger X Sequence Number Next Target Number Target Number Increment Target Log File Target Directory Path Nest Candidate Candidate Directory Path Configuration Parameter Sequence Number Next Target Number Target Number Increment Target Log File Name Cancel CT T CT argets 10 Candidates Meaning or Action Performed This value is associated with the Target File Name The target name is arget X Y tgt Where X is the sequence number and is the target number This value is associated with the Target File Name The target name is arget X Y tgt Where X is the sequence number and is the target number Use this field to set the number increment for the file name or decrement if negative Use this field to set the name of the Target Log File Refer to section 6 4 5 for a description of the file Format Document 990 0000047 1000 Rev 2 0 77 Target Directory Use this field to set the directory where the target files will be saved Path The default path is C Targets Next Candidate Next candidate number to be used Number 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 Candidate Directory Path 6 4 2 LOG FILE CONFIGU
39. 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 Desktop to the application It needs to be independently started either before or after Discover 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 Document 990 0000047 1000 Rev 2 0 66 Edg
40. ace NOTE If selected the system WILL RUN unless there is a valid external input 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 EXTERNIAL DELAY ms This allows the external trigger event to be delayed by this amount with respect to the trigger event INTERNAL DIVISOR If set to 1 the subsystem will fire once for every internal trigger event The maximum range the system can achieve 15 thus set by the trigger rate If set to 2 a Document 990 0000047 1000 Rev 2 0 31 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 EXTERNAL 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 1 8 Network Network Configuration Sonar IP Address 192 9 0 101 Sonar Port Number 1700 Output Port Number This dialog allows the user to change the IP internet protocol address and control port of the towfish DO NOT change this parameter unles
41. act EdgeTech for further troubleshooting tips 2 I get a blank screen with a flashing cursor The COM port you ve chosen 15 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 3 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 425 1 2939 N 07054 4254 W 000 0 000 0 291002 016 3 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 Document 990 0000047 1000 Rev 2 0 65 gt COVERAGE MAPPER 5 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
42. am diagram for using 4 Rev Multi pulse fill in Direction of travel Pulse D Pulse C This is accomplished in the MP X sonar by transmitting multiple distinct pulses at a The timing diagram for the transmit and receive functions is shown below higher rate than dictated by pulses is Document 990 0000047 1000 5 2 A Period t 5 b Rx C Period lt gt C C lt 0 t 2 gt 4 C The tow speed limit is now increased fourfold so that Equation 4 becomes M L C 2 1 94 R 5 where M number of pulses The NOAA requirement for 3 hits on a Im target at the 150m range setting is now exceeded at 12knots It is important to note that the pulse timing is evenly distributed in time and the effective scrolling rate of the MP X sonar is increased by the number of pulses employed Any speed increase or decrease simply results in image stretching exactly as it does for standard one pulse systems Any deviations from a straight line path do not affect the image any more than they do a standard system and provided accurate heading information is logged may be properly compensated for during image mosaicing
43. at no drawback or allowance has been paid or admitted hereof Signed 3 If there is more than one item per consignment a packing list must accompany the shipment It 1s acceptable to combine the proforma invoice and packing list as long as the contents of each carton are clearly numbered and identified on the invoice 4 Small items can be shipped prepaid directly to EdgeTech by FedEx DHL UPS Airborne etc 5 If the equipment is the property of EdgeTech formerly EG amp G Marine Instruments Division please insure for full value 6 Fax one invoice packing list and copy of airway bill to EdgeTech upon shipment Document 990 0000047 1000 Rev 2 0 99
44. ate for signal loss with range The TVG limit stops the gain increasing with range at the displayed limit Document 990 0000047 1000 Rev 2 0 42 COMPRESSION dB Display Entry This entry supports a value of 0 5 10 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 Towtish Control Video Gains Display Disk Gomom Track Grids Satus Signal 11 11 video Delay Lines Fing 1 Link well brown jsp Lines Fing b Zoom 45 1 11 165525 4 n NETS rz Low Zoom 34 155 video Dale Ta Lines Fing Link yellow_brown jsp Lines Ping Zoom 155734 video Dele SSL 84103 SSH 84103 Let 28 008710H Lon 90 16 3691 Courre 322 Speed 39 Date 14 2005 Time 13 4201 Heading 2058 Pich 07 Pol 06 Depth 41 Cursor Ping 83881 52 Free 260912 Playback GPS OFF Reco
45. ay also select the track items to be displayed or hidden such as Boat Position Fish Position Targets Coverage etc Document 990 0000047 1000 Rev 2 0 68 The coverage mapping feature uses significant amount of the CPU s resources The following are the recommended minimum system specifications Display Dual Screen Support e Memory RAM 512 Mbytes minimum e CPU Pentium 4 5 2 OPERATION As the sonar data is being acquired 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 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
46. cable out and the ids si ida square ofthe sum ofthe depth and towpoint height Height 0 00 Leyback 2 h 2 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 manually 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 information can be modified during playback to generate corrected maps ayback values entered during playback do not override the existing numbers 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 Document 990 0000047 1000 Rev 2 0 33 To use the originally recorded layback values customer must select playback form the drop down menu in calculations The Catenary value is expected to be between 0 and 1 with 0 representing towfish directly below towpoint 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 acous
47. cked 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 LOOM 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 Document 990 0000047 1000 Rev 2 0 53 can use the scroll bars at the bottom of each data display to scroll horizontally through the zoomed data Document 990 0000047 1000 Rev 2 0 54 4 NAVIGATION amp 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 The following information describes the serial port interface parameters for acquiring navigation strings from a connected GPS unit o
48. ction allows you to link both the port and starboard displays so 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 Bomom Track Grids Printer Status Signal O14200 F S Sample demo dete Chance 1 jst D it am H4 Ba Duc A mj e SSL 84103 SSH 84103 Let 29 008710N Lom 90 16 3691 W Course 322 Speed 39 14 2005 Time 19 420 Heading 2950 Fach 07 Rol 06 NA Depth 41 Cursor Ping 83851 Mark 57 Free Space 259932 MB GPS OFF Record OFF OFF Power OFF OFF Signal NONE 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 0000047 1000 Rev 2 0 44 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 File View Configuration Help gt M 23
49. disk is nearly full Default value is 10 Megabytes Document 990 0000047 1000 Rev 2 0 25 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 3 1 2 4 3 1 1 3 Printer Setup Note Printing is not supported on the 4200P portable topside Printer Configuration Select Printer iSys V8 5 iSys V8 5 Depth Scale Ultra 120 HD r EPCHSP 100 ange Correction On Active v Labels Background Invert Shade EPC 1085 NT EPC 1066 Annotation Active Tex Event Number Background Invert Shade Printer Interface Port LPT1 This configuration window is selecting one of supported thermal printers Currently the following printers are supported e Ultra 120 and HD version e Ultra 200 and HD version e EPC HSP 100 e EPC 1086 NT e EPC 1086 e EPC 1086 early models e EPC 9206 TDU 850 Sys V8 5 e GeoPrinter 975 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 Document 990 0000047 1000 Rev 2 0 26 INVERT GRAYSCALE Toggle This selection allows the user to select dark output for low back scatter areas SLANT RANGE CORRECTIO
50. drag the cursor over the longest dimension of the target to measure its length 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 15 necessary for accurate measurement Zoom out icon Reduces the size of the displayed image The aspect ratio of the image 15 preserved as the target data 1s always speed and slant range corrected Zoom in icon Enlarges the size of the displayed image The aspect ratio of the image 15 preserved as the target data 1s always speed and slant range corrected Document 990 0000047 1000 Rev 2 0 96 6 7 TARGET IMAGE A right click action on the sonar data waterfall causes Discover to define an area of imagery centered about the current cursor location The default window size of the target image 1s 200 lines by the full sonar range The vertical size for the window can be changed by modifying TargetWindow line in the active Discover Software initiation file DiscoverLastxxxx Jni The target location can be adjusted by zooming in and double right clicking the cursor over the target location Note For better ta
51. e M Override Subsample Method Maximum Manual Speed Kn Override Rev 2 0 23 Edgelech DISCOVER 4200 MP PROCESSOR TVG 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 SLANT RANGE CORRECTION ON Check Box This selection allows the user to toggle the slant range correction on off separately for the high and low frequencies 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 using 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 separately for the high and low frequencies 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 i
52. e ONLY one frequency may be operated at any one time 1 3 THEORY OF OPERATION 10n of les of the MultiPulse operati incip theory and pri ing the MP X sonar The same pr the underly This section details MP series when operated apply to the 4200 iples Mode with the restr iction that maximum of 2 pulses may used tended to both the 410 KHz and 120Khz channels of the 4200 100 in High Definit ique 1 ex and the techn MP 1 3 1 BACKGROUND Conventional side scan sonar SS system has a maximum tow speed Vmax if it 1s desired not to miss any area of the sea floor The following diagram indicates the array and beam positions when this condition 1s reached gt OT Vmax Critical Speed tely the arrays acoustic iS approxima In this case the array displacement per ping d length A typical array length for 500Khz SS systems with 0 8 degree beamwidth is 1 2 R C 20cms The ping cycle time for such a system is 10 2 0 Rev 990 0000047 1000 Document ll be as below DISCOVER 4200 MP PROCESSOR 1500m s For such a system the max homina lagram Wi ing 1S 3 0 2 1500 2 100 2 elech 1 5m s 3 knots approx ag where C is the speed of sound where v p is the maximum tow speed Thus If this speed 1s exceeded the beam d displacement per p Vip d C QR
53. e is very helpful when there is a large amount of clutter in the water column below the towfish that makes bottom tracking difficult It 1s important for the operator to monitor the tracking indicator frequently when this feature is used If the water 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 3 2 6 GRIDS Towlish Control Video Gains Displey Disk Gomom Track Grids Printer Status Signal Gridi 5 Horizontal interval meters 50 Verica interval meters Horizontal interval 50 insere mews 50 S5L 84103 SSH 84103 Lar 29 00 8710N Lee 50 163691 W Course 322 Speed 39 Dete 14 2005 Time 13 4201 Heading 2058 07 Fol 05
54. e 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 1s optional 4 4 3 GGU GEOGRAPHIC POSITION X AND Y COORDINATES X and Y coordinates of the present vessel position 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 CR LF 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 1gnored 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 1gnored hhmmss ss Time of position fix HoursIMinuteslSeconds decimal 2 fixed digits of hours 2 fixed digits 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 1s optional 4 4 4 GGA GLOBAL POSITIONING SYSTEM FIX DATA Time Position and fix data for a GPS receiver GGA hhmmss ss llll ll a yyyyy yy a q nn d d a a M g g M e e rrrr
55. ed 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 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 18 optional and ignored NOTES Zone description is the number of whole hours added to local time to obtain GMT Zone description is negative for East longitudes The GLL string provides a more accurate time reference since it is related to the position fix Time and date from the computer CPU are also recorded and could be displayed if GPS time and date are not available Fix marks are bars across the time zero line in all channels 4 4 9 HDG HEADING DEVIATION AND VARIATION Heading magnetic sensor reading which if corrected for deviation will produce Magnetic heading which if offset by variation will provide True heading HDG x x x x a X X a hh lt CR gt lt LF gt Magnetic Variation degrees E W 2 3 Magnetic Deviation degrees E W 1 3 Magnetic Sensor Heading degrees Notes 1 To obtain Magnetic Heading Add Easterly deviation E to Magnetic sensor Reading Subtract Westerly deviation W from Magnetic Sensor Reading 2 To obtain True Heading Add Easterly variation E to Magnetic Heading Subtract Westerly variation W
56. ed on the current or latest fish position Document 990 0000047 1000 Rev 2 0 73 6 TARGET LOGGER 6 1 INTRODUCTION EdgeTech s Discover Target Logger is used for feature mensuration logging and recall Right clicking on the sonar image in the Discover software launches the Target Logger If the Target Logger is already running when a feature is selected from the waterfall right click Target Logger becomes the active window If Discover software is not running Target Logger can be initiated by clicking on the desktop shortcut A right click action on the sonar data waterfall causes Discover to define 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 Display 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 Jn1 6 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 directory 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
57. elech DISCOVER 4200 MP PROCESSOR An example of the Coverage Mapper screen is shown below FA DiscoverCoverageM apper Configure View Help Lon 80 5 10 Lon 60 5 00 Lon 60 4 90 Fish Track Actual Ground Range Port Side Lat 26 4 00 Marked Target Position Lat 26 4 0934 Lon 80 4 9754 W NUM FFA The Coverage Mapper can be user configured to e Auto Pan follow ship with fixed zoom factor e Auto Zoom 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 Document 990 0000047 1000 Rev 2 0 67 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 MP is also provided Target Position Cursor Range to Target Lat 26 3 9908 Lon 80 4 99694 Length 49 M 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 Re center screen on Fish Position Pan Up Down North South Pan Left Right East West e Measure Area or Length Users m
58. erload There will be a vertical interference line at the instants of transmission of the out of band pulse This is interference is caused by the system receiver electronics being overloaded by very strong echoes from the nearby reflectors wake bubbles or sea bottom Veo cow E 64 Wie 3 d oR QUUM ac 1 tpa s E Nu SE 2 VPE drin gt M og RU Pee T e Jat dE V v Ar I 433 d i E E n 54 2 Mid range Banding 100 power 60 Power setting Document 990 0000047 1000 Rev 2 0 03 9 COMPASS CALIBRATION The towfish 15 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 RS232 19200 bit s 8 bit stop bit No Parity e Output Message Format NMEA 120 second See HMR3000 manual Section 3 10 9 1 CALIBRATION METHOD To calibrate the compass module the Honeywell PC application software PCDEMO EXE must be executed on the towfish computer Access the towfish computer using the Sonar rdp shortcut on the topside computer This activates the Remote Desktop feature of the Ed
59. everal hundred volts or more while the receive signals are in the micro volt region It Document 990 0000047 1000 Rev 2 0 14 is not possible therefore to share the same piezo electric elements for these functions as 15 common in most side scan sonar systems The MP X sonar uses a separate element for each of the transmit and receive functions all contained within one physical array construction with careful attention to acoustic isolation within the array Tx Element Pulse 5 Generator Pulse A amp B Q ET LL Hx element Heciever Amplifier 1 3 4 RECEIVER PROCESSING The essential elements of the receiver processing are shown in the figure below Document 990 0000047 1000 Rev 2 0 15 Edgelech Rx element Pre Amp Band 10 pulse A DISCOVER 4200 MP PROCESSOR Normal Rx Period T 10 pulse B The echo signals from the receive element are amplified and band limited to encompass the useable array bandwidth After suitable amplification the combined echo signals are digitized with one high dynamic range A D converter It is important to realize that the echoes being received at any instant may come from up to 4 different ranges one from each transmitted pulse ensonifying different areas of the sea floor The inter pulse discrimination and echo separation is achieved in the FM chirp matched fil
60. f minutes Leading zeros always included for degrees and minutes to maintain fixed length a N for North Latitude or S for South Latitude DegreeslMinutes 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 Yes Data Valid Warning Flag Clear Data Invalid Warning Flag Set NOTE Other supported navigation strings for position are GGA RMA RMC 4 4 2 GXY GEOGRAPHIC POSITION X AND COORDINATES X and Y coordinates of the present vessel position time of position fix and status GX Y xxxxxx xxx a yyyyyy yyy b hhmmss ss hh CR LF XXXXXX XXX Floating point numeric may have leading negative sign Represents Document 990 0000047 1000 Rev 2 0 57 horizontal axis of plane X coord a Character label for X Must be valid ASCII character but value is ignored yyyyyy yyy Floating point numeric may have leading negative sign Represents horizontal axis of plane Y coord b Character label for Y Must b
61. ffsets 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 Document 990 0000047 1000 Rev 2 0 28 Note The operator should log the Navigation Offsets and insert them every time 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 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 true north estimate DEPTH OFFSET UP IS NEGATIVE This selection box allows the user to enter a fixed offset for the towfish depth 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 vessel to account for lever effect hence the need to make some adjustments PITCH OFFSET NOSE UP IS POSITIVE This selection box
62. fo EdgeTech com and include your Machine ID number The Machine ID number will be in the upper left quadrant of the Insert Password Window EdgeTech will provide a personalized password machine specific Edgelech Discover 4200 MP RESTRICTED File view Configuration Control gt E 5 Insert Password New Password Insert Password Machine ID Contact EdgeTech technical support at info EdgeTech com and include your Machine ID number The Machine ID number will be in the upper left quadrant of the Insert Password Window EdgeTech will provide a personalized password machine specific 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 4200 Control Video Disk Track Grids Primer Status Signal High Chetintion Mode HOM Speed Made Range 0 Low Frequency 200 Fange M Frequency 200 Range M High Frequency On 100 Fange M High Frequency On 100 SSL 84103 84103 Let 29008 Lon 90 16 3691 Course 322 Speed 35 14 2005 Time 194201 Reading 295 8 Puch 07 Roll 06 Depth 41 Cursor Ping 63930
63. from Magnetic Heading 3 Variation and deviation fields shall be null fields 1f unknown Document 990 0000047 1000 Rev 2 0 60 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 SETEMA NNNNNN lt Message gt hh lt CR gt lt LF gt NNNNNN Mark number to use for this event Message Event annotation message up to 23 characters long NOTE 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 NOTE A shortcut to the Windows HyperTerminal application 1s provided to check the navigation input You must quit the Discover application before running and may need to modify the
64. geTech supplied topside which allows direct access and control of the remote towfish computer using the telemetry link It 1 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 Document 990 0000047 1000 Rev 2 0 94 isc Self Test Sonar OFF OFF OF 0 Start gt Sonar The EdgeTech Sonar exe application which normally executes on the towfish computer can be seen This application must be shutdown so that the Com 2 Port is accessible by the Honeywell application This can be done by clicking the top right X button or the Exit pull down tabs Now locate the PCDemo exe application using Windows Explorer running in the towfish and start it by double clicking the file as shown Document 990 0000047 1000 Rev 2 0 95 EFagelech DISCOVER 4200 MP PROCESSOR Sonar Remote 192 9 0 101 Remote Desktop Hep gt X19 Ee Address E stedgetechiHmeso00 ________ Date Modified D Edgetech HMR3000 File Edit Folders Desktop My Documents E 9 My Computer E WINXPE C amp 3 SONAR D DATA El Edgetech J HMR3000 JSTAR Misc SSSSonar Utilities RECYCLER control
65. gnostic Information Connection to Towfish Electronics Good Overflow Count Power V 476 Error Count 13 Ambient 25 6 Activity 880044 Bottle 0 0 4200 Diagnostic Connected Cable Current mA 97 Surface C 22 Fish Power Trigger Negative Supervisor 3e WLAN MLAN DSL 400V Here the system is fully operational with no problems The connection to the towfish is good the cable current is reported to be 97mA good values are between 80 to 180mA for a 4200 MP towfish Other reported data are Power V nominally 48VDC This is the primary internal supply voltage for the towfish and should be between 44 to 52 VDC e Ambient This is the internal ambient temperature of the towfish This shold be between 0 and 60deg C max A value of 65C and over will prevent correct towfish operation Bottle Not used Document 990 0000047 1000 Rev 2 0 36 Error Count non zero value is but it should NOT INCREASING during normal operation If it is it indicates and internal software error or an inadequate telemetry uplink rate e Activity Shows CPU activity counter has no specific meaning but should be steadily increasing e Surface This is the ambient temperature of the topside interface electronics e Supervisor Not used Here are some other diagnostic displays with some errors Diagnostic Information Problem Cannot Ping Towfish
66. he bottom tracking feature 1 tracking the bottom reliably If the bottom tracking feature 15 not properly tracking the bottom it will cause this display to indicate a false altitude value 3 2 9 SIGNAL Towel Corral Video Gams Orepley Dick Batom Track ands Smug nid High Frequancy 32757 Starboard 32757 Litre 24584 eros Aj rhy speed 358 De 14 Z005 fime 19 535 2889 Puch 01 20 Amadeo MA Depth 41 Cursor Ping 4269 Mark 58 Space 259910 Playback GPS OFF OFF RG Power OFF AGO OFF Signal NONE The signal display panel shows the signals and frequencies from the port and starboard sides of both the high and low arrays 3 3 LOWER INDICATOR BAR FEATURE DESCRIPTIONS cmo 5994 By gbsce 51619 WB 209 SS OLE 58300 58901 52 002808 PO 80 0070335 Comes gpa 06664 30 13 5000 1146 50 55 10 HESQWA 34 5 BO 04 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 cur
67. imited 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 High Speed Mode If the system is operating in the High speed mode this will preclude the use of the HDM mode In this mode the system transmits at twice the conventional rate C R where C 1500m s nominal and R range setting to provide double the system update rate HF ON This selection allows the user to enable the High Frequency system to run in high speed mode ALL trigger inputs are ignored Document 990 0000047 1000 Rev 2 0 41 Edgelech DISCOVER 4200 MP PROCESSOR LF ON This selection controls the On OFF state of the Low Frequency system in HSM mode These controls are mutually exclusive To swap between HF and LF systems in this mode OR to swap to HDM mode the active system must be turned Off and then the alternate selection made 3 2 2 VIDEO GAINS Towlsh Control Video Game Displey Disk Bomam Track Grids Printer Status Signal Video Gain dB 245 Ay 21 2 Mex TYG dE aH Compression 0 4 Sterna Gan 0 240 Gain 25 Mex TVG dH a Compression dB 0 4 Starboard Gein dE S5L 84103 SSH 84103 Lar 29 00 8710 Lon 50 163691 W Course 322 Speed 39 Dete Apr 14 2005 Time 13 4201 Heading 2058 07
68. mage Consequently changing the across track ZOOM factor 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 SUBSAMPLE METHOD Drop Down Menu This selection allows the user to choose separately for each the high and low frequencies which Subsample Method being used Maximum 15 recommended TEMPERATURE SOURCE Toggle This selection allows the user to choose the source of the temperature data There are two places where the temperature can be measured the first being the wall of the bottle this gives the water temperature And the second giving the ambient temperature inside the bottle the electronics 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 Document 990 0000047 1000 Rev 2 0 24 Edgelech DISCOVER 4200 MP PROCESSOR dimensions Unless you have an accurate measurement of the sound speed then this value Should remain at the default value of 1500m sec 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 acquisiti
69. mum tow speed of the system is proportional to the conventional sonar update rate This update rate is in turn relative to the time it takes for the transmitted signal to travel from the tow fish to the maximum range and back again This ping rate 1 what sets the maximum tow speed given a user requirement for hits on target The 4150 FS System has a maximum tow speed of 4 8 knots and meets the NOAA Shallow Water Survey Specification of three pings on a one meter target at 100 meters range The system may be operated as a single frequency system or as a simultaneous dual frequency system Independent range operation for the 2 frequencies 1 also provided See Section 2 HiGH SPEED MODE HSM In the HSM mode use is made of the EdgeTech MultiPulse technique to provide for doubling the update rate of the sonar This allows twice the tow speed given the same constraint for hits on target See Section 1 3 below In this mode the system s array elements are re configured to provide a transmit while receive capability and a small penalty is paid in along track resolution At high tow speeds 8 knots this 15 more than compensated for by the higher update rate of the system with a much improved Document 990 0000047 1000 Rev 2 0 9 DISCOVER 4200 MP PROCESSOR Edgelech side scan than convent tion 1Ca d classif for better detection an ing allow image sonar at these speeds In the HSM mod
70. n OFF OFF ZOOM There are two of these selection boxes located in the control panel 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 100 maps one sonar sample to one screen pixel A value of 10 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 and starboard displays On screen zooming using the mouse is more efficient and affects these values See section 3 5 2 Document 990 0000047 1000 Rev 2 0 43 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 sele
71. n 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 2 1 5 RECORD WHILE PLAYBACK The independent operation of the playback and recording modules of the Discover software allow some very useful data operations 1 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 2 During Playback the record operation may be started paused and stopped at any time 3 During Recording the Playback operation may be started paused and stopped at any time The data file source for playback may also be changed Document 990 0000047 1000 Rev 2 0 20 4 When recording to a file the format may be specified to be either native JSF format This allows for transcription of JSF file to XTF format at any time The reverse 15 NOT true For this reason we rec
72. nabled See 0 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 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 file 15 WYSIWYG what you see 15 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 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 0000047 1000 Rev 2 0 39 3 1 3 DISCOVER 4200 RESTRICTED If Discover 4200 MP is restricted this means that you are running an unlicensed version of Discover 4200 MP To register go to the help drop down menu and click on Password Maintenance Contact EdgeTech technical support at in
73. ommend that all data 1s acquired and archived on the 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 Notes When recording in X TF Discover automatically records in JSF as well XTF flies can not be played back on Discover Document 990 0000047 1000 Rev 2 0 2l 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 EdgeTech Discover 4200 MP 4 Upper Shortcut BS File View Configuration Control Help Port HF Signal Amplit Signal Amplitude Display Port High Freq Stbd High Freq Display Window Display Window Rm lt lt lt lt lt mm P Gu Meters 101 321 5 0 0 Low Freq Display Window Record File Browse 0 44200 FS FugroChanceDemo 4200 Line1 39 lou mie 0 2757 NES OFF Record OFF Power OFF OFF Signal NONE Lower Control Panels Lower Status Bar Document 990 0000047 1000 Rev 2 0 22 Eagelech DISCOVER 4200 MP PR
74. on This feature is best used during playback in areas where it 1 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 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 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 1 2 Record Setup Record Configuration Maximum File Size MB 600 2 ja XTF Output Free Space Warning MB 1000 MAXIMUM FILE SIZE This selection allows 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
75. on then right click the cursor at the beginning of the target shadow and drag until the end of the shadow to get its ground length 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 6 5 3 NAVIGATION OFFSETS Navigation Offsets o xX Navigation Offsets 1 X Lon Offset A Offset 3 00 Lat Offset Y Offset 8 00 Heading Offset Heading Offset 5 00 Pitch Offset Pitch Offset 1 50 Offset Offset 0 55 Aft Offset Aft Offset 3 00 Offset Offset 9 00 Navigation Fixed Offsets Aft Offset in meters 3 00 Pitch Offset in degrees Nose up is positive 1 50 Offset in meters Starboard Offset meters 8 00 Roll Offset in degrees Port side up is positive 055 Y Offset in meters 80 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 0 0000 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 Document 990 0000047 1000 Rev 2 0 94
76. owfish heading at the target location This information is from 5 the heading sensor the towfish if available Ping Number Ping number at the location of the target 6 5 2 MEASUREMENTS Distance 0 00 Meters Y Distance 0 00 Meters Total Distance 0 00 Meters Length 10 77 Meters Width 7 35 Meters Area 102 00 Meters Shadow H ange 34 45 Meters Shadow Length 30 Meters Height 1 59 Meters X Distance Temporary value that measures the cursor across track X displacement Right click and drag cursor Temporary value that measures the cursor along track Y displacement Right click and drag cursor Temporary value that calculated from the X amp Y values that measures the cursor actual displacement Right click and drag cursor Total Distance Press first the icon then right click and drag the cursor over the longest dimension of the target to measure its length Width Press first the J icon then right click and drag the cursor over the shortest dimension of the target to measure its width Area Press first the ej icon then right click and drag the cursor over the over the target of interest to measure its approximate surface area Document 990 0000047 1000 Rev 2 0 93 Shadow Range Press first the ES icon then right click the cursor at the beginning or the far end of the target shadow to get its ground range nearest point form the sonar towfish Shadow Length Press first the ESH ic
77. power OFF state the system will report either Under or Over current as the reason 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 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 Ping command to this connection will return the Windows message Hardware Error 2 Cannot Ping Towfish Electronics The ADSL link between the telemetry system and the towfish is not established OR the towfish computer has not booted These can both take take about 1 minute and 20 seconds after power on to be established Document 990 0000047 1000 Rev 2 0 38 3 The ADSL link 15 up and correct but the sonar application in the towfish is not running correctly This connection should be established about 1min 30 seconds after towfish power 3 1 2 4 Controls Controls This Dialog window provides user control over production of the recorded data for both the high and low frequency if it is e
78. properties if not running at 4800 baud A sample 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 Document 990 0000047 1000 Rev 2 0 61 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 NOTE The number of incoming strings should be limited to the four mentioned above For accurate fixes the navigation strings should be updated once a second 1 Hz or faster 4 5 SERIAL PORT CONNECTIONS The following chart depicts the pinout of the male DB9 RS232 connector found on the computer male pin out in 1 Carrier Detect CD input Pin 4 Data Terminal Ready DTR output 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 15 Receive 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 1s a necessary connection for GPS communications Pin 5
79. r 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 DESCRIPTION Dummy characters to start the Address Field e g GP not used by EdgeTech products Sentence Formatter Mnemonic code identifying the data type and the string format of the successive fields Field Delimiter Starts each field except Address and Checksum Document 990 0000047 1000 Rev 2 0 55 fields If it is followed by a null field it is all that remains to indicate no data in the field C C Data Sentence Block Data field s preceded and separated by delimiters Optional Checksum Delimiter hh Optional Checksum Field 4 2 PORT PARAMETERS Interface RS 232C Com Port User Choice limited to installed serial ports Baud Rate 4800 Data Bits 8 Start 1 Stop Bits 1 Parity none Handshaking none 4 3 PORT SELECTION The port assigned to receive the navigation messages is assigned a supporting file
80. rent Event Mark number LAT LONG COURSE AND SPEED Displays current data from the 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 1 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 Document 990 0000047 1000 Rev 2 0 50 Normal operation all these indicators should be on WHITE Of course if you not want to record data then a RED indicator here is acceptable 3 4 SHORTCUT BAR Reduce Current Increase Reduce Current Increase Gain Gain Gain TVG TVG TVG FA Discover 4200 MP Playback Pause Stop dB Aw Faster aes 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 0000047 1000 Rev 2 0 51 Edgelech DISCOVER 4200 MP PROCE
81. ress Calibrate Power button Repeat the last two steps if the displayed blended data is not satisfactory In order to not overshoot the ideal calibration values it is recommended to use a Convergence setting of 80 and recalibrate the pulse a few times until a uniform screen appearance is achieved If the results are acceptable Press Accept Calibration to save the settings or Press Use Last Accepted to revert to the latest saved calibration settings Document 990 0000047 1000 Rev 2 0 90 e The Use Factory Settings button will force the system back to the factory shipped values The Last Accepted user settings will be retained and can be restored as described above Notes To calibrate another pulse set select the pulse from the towfish control menu and repeat the above steps Automatic Gain Control AGC should always be checked ON See Advanced Sonar Control Document 990 0000047 1000 Rev 2 0 91 8 OVERLOAD In the HSM mode of operation there is possibility that high signal levels reflected from the sea floor or other reflectors can overload the system receiver This 15 referred to as overloading The banding shown in the below picture shows this and is typically due to presence of strong reflectors in the water column e g wake of the boat or it may occur under conditions of very high bottom reflectance rocks coupled with low fish altitude few meters The image below shows a system ov
82. rget image the Discover image should be speed corrected 6 8 BOTTOM TRACKING Bottom The Bottom Tracking confirmation window allows fine adjustment of the seafloor location for proper target measurement 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 6 9 REMARKS FIELD Remarks Insert annotation related to the target in the remarks field When loading a saved target the remarks field 15 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 0000047 1000 Rev 2 0 87 6 10 TARGET CANDIDATES 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 one are displayed All candidates are stored in C targets Candidates the default directory or any other directory selected in the Configure Target Setting Menu The candidate file stored Candidate cdt 1s the actual sonar data in the area of the target The operator can either save the candidates
83. s 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 3 1 1 9 Serial Ports Serial Configuration Enable Cable Counter Monitoring Enable Primary Navigation Input Port OFF T Baud Rate 9600 Select Por monitor Cable Counter Remote sonar serial O Must match the logical portvalue as set by the sonar Port OFF Baud Rate 4800 gt Used for NMEA input of GPS and Navigation Enable Remote COM Fort Enable Secondary Navigation Input Port OFF Baud Rate 4800 v 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 Document 990 0000047 1000 Rev 2 0 32 ports give the user the ability to link a serial device in the bottle to Discover via the telemetry link 3 1 1 10 MultiPulse Calibration This is applicable to the MP X 4300 and 4200 MP versions only See Section 7 Calibration 3 1 1 11 Layback Cable Out Towfish Depth Towpoint Offsets Layback Calculation Manual v Manual v Aft 0 00 Hypotenuse v Layback The square root of the difference between the a oo a a square of the
84. ssel course GPS or Boat Gyro for calculations 6 4 4 MARK FILE FORMAT Maptech is navigation software that is provided as an option with the EdgeTech Discover software Maptech 9 software real time viewing of the ship track lines superimposed on navigation charts Please refer to the 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 CE TOKEN 74009708 Note The row was transposed to column for display purposes Record Version Awaysi Symbol 25 48sgw20 Tim Dae 33 3 0 6 4 5 LOG 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 Document 990 0000047 1000 Rev 2 0 40 default Other information is added to the file by checking appropriate box the ASCII Logging Configuration menu 6 4 5 1 Default File Tot ID Target Lon Target Lat Date amp Time 80 04 7962 26 06 3056 320021581609 6 4 5 2 Fields Note The row was transposed to column for display purposes gt ID 26 arget Lon 80 06 5379 E arget Lat 26 05 5793 N ate amp Time220021581549 hannel otarboard ength 5 1 Width 9 08 Rol 0 3 POf O A Aft Off O _____ SibOf O _____ Document 990 0000047 1000 Re
85. surveys preformed in a straight line When turning layback calculations are not valid 3 1 2 CONTROL MENUS FdgeTech Discover 4200 MP File View Configuration sys Help gt if Advanced Sonar Contrals 18 External Device Controls Diagnostic Information Output Control The Control menus provide access to more advanced features not commonly used in the software 3 1 2 1 Advanced Sonar Controls Advanced Sonar Controls This pull down menu option allows access to the transmit Power Level controls POWER LEVEL This allows the transmit power to be reduced in those circumstances where the full power setting 100 overloads the receivers typically when running very close to a hard seabed Useful range for the control 15 typically 50 to 100 The Power Level warning indicator Lower Indicator Bar will turn RED when the power is 100 This should only be used if you are sure that the transmit pulse amplitudes are too high and are overloading the receiver Document 990 0000047 1000 Rev 2 0 35 3 4 2 2 External Device Controls External Device Controls Allows control over external devices 3 1 2 3 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 15 for a 4200 MP system The state of the telemetry link 1s shown to the left Dia
86. t Document VBX File Application Extension VBX File Application Extension Application Extension Application Extension VBX File VBX File VBX File 9 21 2004 12 56 PM 4 12 1997 3 12 PM 4 28 1993 3 00 AM 9 1 2004 6 24 PM 4 28 1993 3 00 AM 4 28 1993 3 00 AM 4 28 1993 3 00 AM 10 4 2004 9 59 PM 9 23 1999 4 34 PM 9 23 1999 4 40 PM 9 23 1999 5 09 PM 10 4 2004 9 59 PM 10 4 2004 9 59 PM 12 21 1995 1 18 PM 4 25 1996 1 46 7 17 1993 5 28 AM 3 24 1994 3 00 AM 4 28 1993 4 00 AM 5 12 1993 10 00 AM 7 30 1997 6 30 PM 5 11 1998 9 40 PM 8 8 1995 2 35 AM 1 54 PM Hr mE SS ee 9 21 2004 12 56 PM 4 12 1997 3 12 PM 4 28 1993 3 00 AM 9 1 2004 6 24 PM 1 55 PM 96 At this point the user is referred to the HM3000 manual for calibration see section 2 12 PC Demo Software Interface Method A copy of the HMR3000 Users Manual is stored on the towfish in the HMR3000 directory After calibration the towfish should be shut down turned off and restarted Notes The towfish should be about 10m from the towing boat The boat and the fish should be towed in slow steady circles at least 2 complete circuits each circle taking more than 3 minutes to complete Rate of change of heading should be kept nearly constant Provided an excessive amount of saturated readings are not encountered the data acquired should be applied and accepted Once the data gathered 1s adequate the number of valid readings acquired should
87. tering each transmitted pulse A B and or D a corresponding matched filter MF 15 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 compression and the required inter pulse discrimination 1 3 5 RANGE PULSE BANDWIDTH COUPLING At short ranges the ping or firing rate of the sonar is naturally very high For example at 25m range the ping rate 1s about 1500 2 25 30 second As the range 15 increased the ping rate for a single pulse system drops linearly to about 5 second at 150m It 1 here where the MP X s multiple pulses can be best employed For a 4 pulse mode the ping rate can be restored to 20 s As shown in Section 1 3 2 these multiple pulses are achieved by utilizing LESS bandwidth per pulse so that the total array bandwidth available 1s divided equally among the 4 pulses Document 990 0000047 1000 Rev 2 0 16 It 1s a natural consequence then that using more pulses reduces the across track resolution and explains partially why using the maximum number of pulses 4 is not always the best choice However this situation also arises in all other side scan sonars Take for example the conventional non chirped CW continuous wave sonar where for longer range operation a longer pulse is used normally to emit more energy A natural consequence
88. tic positioning 1s required Aft offset GPS Antena de Tow Point Starboard Height offset Reference Point Depth Down Layback Figure 3 1 Layback out The cable out comes in through a serial port to counter Discover from a counter on the winch Playback Originally calculated cable out value is used Towfish Depth User manually inputs the estimated depth of the towfish Depth comes in through a serial port to Discover from a Sensor pressure sensor in the towfish DPT Depth comes in as a NMEA string through a serial port to Discover 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 Towpoint 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 Manual The user manually inputs the estimated layback and Calculations that value is used by Discover Hypotenuse Using the equation that Layback equals the square root of the difference between the square of the cable out and the square of the sum of the depth and towpoint height L 4 d h Catenary Layback equals the line out times the catenary factor angle of attack Playback Originally calculated layback value is used Document 990 0000047 1000 Rev 2 0 34 Warning Layback calculations are set up for
89. ur equipment when it arrives at our receiving dock and to assist us in tracking your equipment while it is at our facility The material should be shipped to the address indicated above Please refer to the issued RMA number on all documents and correspondence as well All returned material must be shipped prepaid Freight collect shipments will not be accepted Outside Continental United States I 2 The following steps apply only to material being returned from outside the Continental United States These steps should be followed carefully to prevent delays and additional costs All shipments must be accompanied by three copies of your proforma invoice showing the value of the material and the reason for its return If the reason 1 repairs it has to be clearly stated in order to come through customs faster and without duties being charged Whenever possible please send copies of original export shipping documents with the consignment If the value of the equipment is over 1000 the following Shipper s oath must be sent with the invoice This oath can be typed on the invoice or on a separate letterhead declare that the articles herein specified are the growth produce or manufacture of the United States that they were exported from the United States from the port of on or about l that they are returned without having been advanced in value or improved in condition by any process of manufacture or any other means and th
90. used in a watertight plastic carry case Connection to the Discover Processor usually a Laptop style PC is made through an ETHERNET cable or wireless LAN In the 4200 configuration the processor houses the display and acquisition processing hardware and software The towfish power supply and telemetry system are housed in a 19 rack Both configurations use a single wire nominally co axial tow cable Navigation and auxiliary inputs are all made to this common processor Document 990 0000047 1000 Rev 2 0 7 The software environment for these 2 cases 1 shown in the diagrams below Model 4200 Rack Mount Topside Processor with EdgeTech DISCOVER Software EdgeTech 701 DL Telemetry Link ae SN Model 4200 Portable Topside Processor with EdgeTech DISCOVER Software Ethernet Document 990 0000047 1000 Rev 2 0 8 12 HIGH DEFINITION AND HIGH SPEED MODES The 4200 MP series sonar 1 unique in its ability to provide both high speed and high definition modes of operation The mode chosen will depend on the users task at hand and tow speed requirements 1 2 1 HIGH DEFINITION MODE 122 In the HDM mode the system performs as a conventional simultaneous dual frequency side scan sonar using linear FM chirp pulses for improved range and signal to noise ratio operation The system s array elements are configured and utilized to provide the best along track resolution of the system The maxi
91. usually green is Ground This can be connected to the common ground from the GPS wiring This 1s a necessary connection for GPS communications Document 990 0000047 1000 Rev 2 0 62 Pin 3 usually red is Transmit This connection will go back to the GPS Pin 3 1 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 4 Select the Hardware tab and click the Device Manager button Next to Mice and other pointing devices click the plus button to expand this list You should see at least two items listed One 1s the mouse you normally use and the other will probably be listed as Microsoft Serial Ball Point Highlight Microsoft Serial Ball Point and click the Disable button at the top of the window it 1s usually the second button from the right hover the cursor over it and read the Tool Tip to verify
92. v 2 0 41 6 5 VIEW MENU Three sets of windows can be opened to display target position target dimensions and navigation offsets 6 5 1 TARGET INFORMATION Target Information Target Information x Target Lon 3 53 2656 E Target A 643568 36 Target Lat 8 37 5885 Target Y 3555 5 Altitude 26 47 Altitude 29 36 Ground Range 90 95 Ground Range 44 08 F Slant A ange 4472 Slant A ange F Navigation Lan I seh Navigation lt b43887 20 Navigation Lat 5 37 6152 Navigation 281 3528 70 Heading zl Heading 307 36 Fing Number 0 Ping Number 0 Target Lon Target X Target Longitude or X Position corrected for offsets Target Lat Target Y Towfish height from seafloor Proper bottom tracking 1s required to get Altitude meaningful altitude information Ground Ranse Ground distance between the towfish and the target A P after the 5 range indicates Port Side while 5 indicates Starboard Side Slant Range Actual distance between the towfish and the target A after the 5 range indicates Port Side while 5 indicates Starboard Side Navigation Lon Navigation X Target Latitude or Y Position corrected for offsets Raw longitude information from GPS or Navigation input Navigation Lat Navigation Y Raw longitude information from GPS or Navigation input Document 990 0000047 1000 Rev 2 0 82 Heada Sonar t
93. which delete the candidate file and create a target file or delete the candidate 6 11 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 Document 990 0000047 1000 Rev 2 0 88 7 CALIBRATION The MultiPulse technique used in HSM mode of the 4200 MP transmits 2 separate pulses during a receive cycle to provide the high update rate data These pulses each use a different section of useable frequency range of the system s transducer However the transmit receive sensitivity of the transducer is NOT the same for each of these pulses resulting in possible strong horizontal banding the image if not compensated for during transmit The system is factory tested and calibrated before delivery but some calibration may be required from time to time to offset component aging and drift A built in Calibration routine allows for user level field calibration to be performed Nereid MP X File View Configuration Help MultiPulse Calibration Advanced Sonar Controls Record Setup Display Setup Mavigation Setup isu Cu MultiPulse Calibration Seafloor Offset pn Reset Power Calibrate Power Accept Calibr xon Use Last Accepted Region Size 20 Convergence 2 100 0 s Use Factory Settings Data before Pulse

Discover 4200 users software manual

Contents

Download Pdf Manuals

Related Search

Related Contents