JW Fishers SCAN-650 User manual

1
SCAN-650
Scanning Sonar
OPERATION MANUAL
JW FISHERS MFG INC
rev 811
JW FISHERS MFG INC
1953 COUNTY ST.
E. TAUNTON, MA 02718 USA
[phone]; [phone]; FAX [phone]
Email: [email protected] WEB: www.jwfishers.com

2
SCAN-650
Scanning Sonar
OPERATION
AND
MAINTENANCE
MANUAL
JW FISHERS MFG INC
1953 COUNTY ST.
E. TAUNTON, MA 02718 USA
[phone]; [phone]; FAX [phone]
Email: [email protected] WEB: www.jwfishers.com
Surface Sonar Processor Included

3
TABLE OF CONTENTS
• CAUTIONS............................................................................................................. 4
• SPECIFICATIONS AND OPTIONS ........................................................................ 5
• MINIMUM SYSTEM REQUIREMENTS................................................................. 6
• INTRODUCTION.................................................................................................... 7
• SYSTEM COMPONENTS..................................................................................... 9
• THEORY OF OPERATION .................................................................................. 11
• OPERATOR SWITCHES AND CONTROLS ....................................................... 16
• INSTALLING HARDWARE AND SOFTWARE .................................................... 27
• CABLING THE SYSTEM ..................................................................................... 31
• ATTACHING TO ROV.......................................................................................... 32
• OPERATION ........................................................................................................ 35
• SAMPLE PLAYBACK........................................................................................... 36
• SAMPLE RECORDING ....................................................................................... 37
• FAQs .................................................................................................................... 39
• TROUBLESHOOTING......................................................................................... 41
• APPENDIX A (configuring GPS) .......................................................................... 44
• APPENDIX B (USB to Serial Adaptor)................................................................. 45
• MAINTENANCE................................................................................................... 47
• WARRANTY......................................................................................................... 47

4
CAUTIONS:
• Do not allow the SCAN-650 to be exposed to excessive heat by leaving it in direct
sunlight or inside of a closed vehicle on a hot day. Excessive heat can buildup
inside the housing which can damage the electronics and/or destroy the waterproof
seals.
• Take special care of the black flexible boot located on the top of the scanning head.
The black flexible boot is an acoustic window that should be keep clean (soap and
water) and protected from damage.
• Do not remove the (6) screws that hold the black flexible boot in place on the scan-
ning head in-place. The scanning head contains a liquid that will drain out if the
screws are loosened.
• Do not remove the black hex head bolt on the scanning head (this is only on the 2
piece SCAN-650).
• When mounting the scanning head, be sure the arrow on top of the scanning head is
pointing forward, this will be the top of the screen on the PC.

5
SPECIFICATIONS
PERFORMANCE/DESCRIPTION:
•Frequency............................................................................................................ 650 kHz.
•Beamwidth-horizontalxvertical .......................................................... 2.4 deg by 40 deg.
• Ranges: ........................................................................................ 5, 10, 20, 40, 60 meters
. .................................................................................................. 16.5, 33, 66,132,198 feet
• Max depth ............................................................................................... 300 m / 1,000 ft .
• Input voltage
- Sonar Processor .......................................................... 9-12 vdc or 120/220 vac (5 watt).
- Scanning Head................................................ from Sonar Processor or 9-36 from ROV.
• Cable ..................................................................................................... 2 or 4 conductor.
DIMENSIONS/WEIGHT:
• Sonar Processor..................................... 8”Wx9"Dx2.5"H ......................... 2 lbs / 0.9 Kg.
650A:
• Scanning Head and housing ................... 3.5"Dia x 10.5"L ................. 3.6 lbs 1.6 Kg (air).
............................. 0 lbs / 0 Kg (water).
650B:
• Scanning Head ......................................... 3.5"Dia x 4"L ................... 1.4 lbs / .6 Kg. (air).
.......... .375 lbs / .17 Kg. (water).
• Housing ..................................................... 3.5”Dia x 9"L..................... 2.8 lbs 1.2 Kg (air).
..................... 0 lbs / 0 Kg (water).
Note:
If 180° sweep, cut times in half; if 90° sweep, cut times by four, etc.
OPTIONS
• up to 600 meters / 2,000 feet of cable
• Carrying case

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SCAN-650 MINIMUM SYSTEM REQUIREMENTS
CPU: Intel or AMD. 500MHz
System memory: 64 Mb RAM
(Faster CPU and more RAM will allow faster scanning)
One available USB port
Windows 98 or later
15 Mb of free disk space for program installation
Disk space for file recording:
5 Meter Range
.5 deg step............... 52 meg/hr ............ 13 hrs/CD, 90 hrs/DVD
2 deg step ................ 30 meg/hr ............ 23 hrs/CD, 200 hrs/DVD
10 Meter Range
.5 deg step............... 27 meg/hr ............ 25 hrs/CD, 170 hrs/DVD
2 deg step ................ 17 meg/hr ............ 39 hrs/CD, 270 hrs/DVD
60 Meter Range
.5 deg step............... 14 meg/hr ............ 50 hrs/CD,345 hr/DVD
2 deg step ................ 11.5 meg/hr ......... 60 hr/CD, 400 hr/DVD
Video Card capable of:
16 bit color
Screen Area of 800 x 600 pixels (minimum)
Optional:
CD or DVD burner for archiving files
Note: For the fastest scanning capability, shut down all other programs (including
virus scan).

7
INTRODUCTION
The SCAN-650 is a high performance imaging sonar system available in two different package
configurations which enables it be used on large or small ROVs. It can also be pole-mounted and
used from a small boat in shallow water.
The Sonar Processor is located in the boat and
allows fine tuning of the signal from the electronics
module prior to being displayed and recorded on
the PC display. It is used with both of the above
models. The Sonar Processor also includes an
interface for a GPS receiver.
The SCAN-650A configuration is used with
larger ROVs, or when the main application is
boat deploying the unit on a pole (see photo next page).
The black scanning head is connected permanently to
the electronics module. A cable (not shown) comes out
of the bottom of the electronics module and connects
to the Sonar Processor.
The SCAN-650B configuration is used with
smaller ROVs. The black scanning head is mounted
to the front of the ROV and a short cable connects the
head to the electronics module which is mounted on the
side or under the ROV. Cabling options include a hardwired
version where a cable comes out of the bottom of the of the
electronics module and connects directly to the Sonar Pro-
cessor or a set of short wires equipped with under water con-
nectors and a hull penetrator. This option allows the wiring from
the scanning head to enter the ROV. The scannin head can
draw power from the ROV and utilize (2) spare wires in the ROV
umbilical cable for communication with the Sonar Processor.

8
When operating in shallow water, the
scanning head can taped or clamped to
a pole and deployed over the side of a
boat or off a dock. Pole must be held very
steady (and no waves if deployed from a
boat) to insure a clear picture. If the sur-
face conditions are too rough, the scan-
ning head can be attached to a tripod and
lowered to the bottom (2’ off bottom for
small targets) to provide clear images.
There are times when it is advantages to
deploy the scanning head inverted (up-
side down). This might occur when de-
ploying on a pole. The software allows
inverted scanning (see “Settings” Menu
pg 18 .)
The target below is a pickup truck (note large
black shadow) located in 18 feet of water. The
scanning head was mounted on a pole which
was deployed from a small boat (see top photo).
The most common application is mounting the scanning head
on an ROV. The ROV can rest on the bottom or hover just off the
bottom and the sonar scans 360 degrees looking for targets.
Mountingthescanning
headon apole allows
it to be deployed from
aboat in shallow
water.
SCAN-650scanning head
mountedon Fishers SeaLion
ROV.
123
1
2
3
1
2
3
123
Pole
Transducer(black end) is
positioneddownwardwhen
operating with a pole. Be
suretransduceris below
bottom of pole (so pole
doesnotinterfere with
signal).
SCAN-650
1234
1
23
4
1
23
4
1234
12
12
SCAN-650
Tripod deployment

9
SYSTEM COMPONENTS
Signalsfromthescanninghead travelupthecabletotheSonarProcessoronthesurface.The
signalsareprocessedandsenttothePCwherethesignalisdisplayedandrecorded.Theboat’sGPS
receiver can also be connected to the Sonar Processor. If connected, the boat’s Latitude and
Longitudewill be displayed and recorded by the PC.
cable to surface
Sonar
Processor
12345
1
234
5
1
234
5
12345
PC (customer supplied)
Boat’s
GPS
USB Port
The Sonar Processor can be powered by 9 - 12 vdc.A 120/220 vac to 12 vdc wall transformer is
suppliedto power the system from a 120/220 ac voltagesupply. Acable withbattery clips is
suppliedto power thesonarfrom a 12voltbattery.
WallTransformer Cable for 12v battery
Transducer Head and
Electronics
TheSonar Processor connectto any availableUSB portonthe PC. (Note: Itis best touse the
samephysical USB porteverytime you operate)

10
LEFT
BLANK

11
THEORY OF OPERATION
SONAR BASICS
Sonar is the bouncing of an acoustic signal off a target and then measuring the time it takes to
return - thus giving us distance, and measuring the size or amplitude of the returned signal - thus
giving us hardness of the target. Since the speed of sound in water is known (1500 meters per
second), it is easy to determine the distance to a target by simply measuring the time it takes to
makethe round-trip anddividing by two. Ifweexamine thesizeof thereturnedsignal (amplitude),
wecan determine ifthe sonar signalhit asoftobject (mudbottom) or ahard object (rockybottom).
Themuddy bottom willabsorb muchofthe signalwith very littlesignal (echo) beingreturned. The
rockybottom produces alargeecho which iscalled a hardreturn.
The acoustic signal is produced by a transducer. In operation, the transmitter generates an
electricalpulsewhichisappliedtothetransducer. Thetransducerconvertsthis pulse to a mechani-
calvibrationwhich producesanoscillating pressure waveinthe water thusforminga sound pulse.
Thepulsethentravelsawayfromthetransduceruntilitstrikesanobjectatwhichpointsomeportion
ofthe pulse isreflected back tothe transducer asanecho.
When the echo returns to the transducer, the transducer is mechanically excited by the sound
pressureandconvertsthevibration into an electricalsignal. Thissignalisthendetectedand ampli-
fiedbythe receiver.
Thecontrol/displayunitregulates the precisetimingbetweenthetransmitters, receiver anddis-
playelements.
DEPTHSOUNDER
Depthsoundersareasimpleformofsonar. Theysendoutaconicalshapeenergypulsetoward
thebottom,listenforthe return, calculatethetimeittook,and displays the answerinfeet(ofdepth).
Ifyour depth sounderhas adisplay or aprintout, a linewill bedrawnrepresenting thebottom. Be-
causethebeamis so wide (15to30deg),thebeam will beontheobjectfora long timeasyoupass
overit. As aresult, evensmaller objectsappearto bequite largeon theprintout. Fish showup as
large arcs on the display. Depth sounders typical operate at a frequency of between 50kHz and
200kHz.Goodfor long rangebutnot for detectingsmalltargets
SCANNINGSONAR
Scanningsonarrefinestheprocessbydecreasingthebeamwidthtoaverynarrow 2 deg (2 deg
by40degfanshapedbeam)anddramaticallyincreasingthefrequencyofthesignal(typically600kHz
range).Theverynarrow fanshapedbeamandhighfrequencydramaticallyimprovesthedetailofthe
objects on the bottom. The fact that scanning sonar sweeps the beam back and forth across the
bottomgives amajor improvement over the depthsounder printoutfor bottomdetail. Not onlycan
verysmall targets bedetectedbut thedetailsof the targetcan be seen.
SideView(fan shapedsignal) TopView(verynarrow signal)
SCAN-650
SCAN-650 Signal
Signal

12
Fish
100 m
10 m
Target #1 Target #2
Acoustic Wave 100 m Range Switch
Transducer
25meterrange
3meters
The JW Fishers SCAN-650 scanning sonar operates by transmitting a short, high energy,
narrow widthacousticwave. Thishighenergyacousticwavehitsdirectlybelowthetransducer
first(asshownbelow)
As the pulse continues to sweep across the bottom, away from the transducer, echoes
continuouslyreturntothetransducer(seebelow). Thereturningechosstrikethetransducer
whichproducethereturnelectricalsignals.
Theharderthe object (rocks, metal, etc),thelarger the returnedecho.Theangle of the
bottomsurfaceand target anglesalsoimpactthe amplitude ofthereturn signal. Theleft
sideof target #1and #2 willproducea larger(harder)return echo thanthe top area.When
theacoustic wave hitsthetop of thetarget, some oftheecho isreflectedaway from the
fish.Whenthebottomslopes away and downfromthefish,onlylight echo’s return fromthe
bottom.Whenthe bottom slopesupward,mediumecho returns arereceived.Ifa hard
targetis positioned onadown or ona up-sloping bottom,ahard return willresult from the
target.If a targetis up“offthe bottom”,as is target#1 and #2,then there willbe anarea
directlybehindthe target thatwillbeblocked from theacousticwave.No echo returnswill
bereceived from thatareaby the fish.Whendisplaying thisarea,the display willshowa no
signalcolor.Thisareaon the displayis called thetarget’s“shadow”.
Thereturn electrical signalsare amplified bythepreamp andsentup thecableto be
processedby the“time variable gain”(TVG) circuit in theSonar Processor. (Referto
page 15 for a more details on the TVG circuit.)
THEORYOFOPERATION (continued)
10m
#1 #2
100 m Range Switch
Returning Echos
Fish
Acoustic
Wave
100 m
Hard Return No Return Echos (Shadow) Light Return Medium Return Hard Return
A look at returning echoes
Transducer
25meterrange
3meters

13
THEORYOFOPERATION (continued)
Afterthelineisdisplayed,thetransducerhead(scanninghead)rotates(steps)slightlytotheright
andthesequenceisrepeated.Thesmallerthestep(1/2,1,11/2,or2degree)thehighertheresolution
of the picture. The transducer’s continuous stepping fills the display with the sonar image. The
sequence is repeated, and if nothing moves (targets or sonar), then the identical picture will be
overlaidoverthepreviouspicture(onelineatatime).Ifa360degreecontinuoussweepisselected,
at 1 degree steps, then 360 steps will make up a complete picture (720 steps for 1/2 degree).
AfterthereturnsignalsareprocessedbytheTVG,theSonarProcessortakesevenlyspaced
samplesoftheechoreturnswhichareprocessedanddisplayedonthePCscreenasaverynarrow
sector that changes color along it’s length depending on the intensity of the reflected signal.The
amplitudeofthereturnedechosamples,duringoneline, determinesthecolorforeachpointalong
theline. Thelargertheamplitudeofthereturn,thegreaterthechangeofcoloronthedisplay. Every
onepulseoutofthetransducer fillsone “degreesper step” sector.
Singlelinedisplayed
onthescreen.
Thewidth ofthis
sectorisdetermined
bythe“Degreesper
Step”setting.
Continuous360degree
sweepor anyportion of
360degrees.
0deg
90deg
270deg
180deg
SCAN-650
Screen
View

14
A
m
p
l
i
t
u
d
e
#1
#2
Transmit pulse 8" Next transmit pulse
Shadow
Shadow
Signal to Sonar Processor
before TVG
Fish
100 m
10 m
Target #1 Target #2
Acoustic Wave 100 m Range Switch
Fig 1
Fig 2
Transducer
25meterrange
3meters
The signal(Fig2)feedstheinputoftheTVGamp.TheTVGamphasbeenadjusted,bytheoperator,
toautomaticallyincreasethegainovertime.Thenextdrawingbelow(Fig3)showsthegainincrease
(called the ramp). The last drawing below (fig 4)shows the output of the TVG amp with the “ramp”
appliedtotheinput.Whenthissignalisdisplayed,therewillbeaevencoloracrossthepaperwithtwo
lightcolorsrepresentingthetwotargets.
G
a
i
n
Next transmit pulseTransmit pulse
Low Gain
High Gain
A
m
p
l
i
t
u
d
eNext transmit pulseTransmit pulse
#1 #2
Shadow Shadow
Fig 3
Fig 4
TIME VARIABLE GAIN (TVG)
TheSonarProcessorcontainsaTVGcircuitonthePCboardthatreceivestheechosignalsfromthe
fishpreamplifierboards.TheTVGcircuitamplifiesandmakestimevariablegainadjustmentstothe
signal to make up for signal losses
whichoccurwhentheechoesaretravelingthroughthewater; thegreatertherange,thegreaterthe
losses. TheTVGcircuithasitsownsetofoperatorcontrolswhicharelocatedoftheSonarProcessor’s
toppanel. ThecontrolsareNEARGAIN,FARGAIN,andOVERALLGAIN.
Thesignalreturn(Fig2)totheSonarProcessoristhesignalthatwewouldexpecttoseeattheoutput
ofthefishpreamps.TheamplitudeofthesignalthatreachestheComputerdeterminesthecolorof
theimage.IftheTVGcircuitdidnotmodifythesignalshownbelow(Fig2),thenthedisplaywouldstart
outgood,butthebottomreturnwouldquicklyturntoacolorindicatingnoreturn.Ifthereturnfromtarget
#2was real strong,it might "popout" of thelight background andprint a lightimage.
Signal with TVG ”ramp” applied

15
TheTVGamplifierhasthreeoperatorcontrols.TheyarelocatedonthetoppaneloftheSonar
Processor.RecommendedsettingsfortheTVGcontrolsareprovidedintheOperationSectionofthis
manual.FinalTVGadjustmentsaremadebytheoperatorwhiletheunitisrunning.Thefunctionofthese
controlsistoadjusttheamplifierstocompensateforlossesthatoccurwhenthesignaltravelsthrough
thewater.Whentheyareadjustedproperly,areasonablyevencolorisdisplayedacrossthescreen
duringsidescanning.Theevencoloristheresultofreflectionsoffthebottom.
NearGain-Adjuststhe TVG gainatthestartofthesweep(objectscloseto the scanninghead).
Far Gain - Adjusts the TVG gain at the finish (objects furthest from the scanning head). Operator
adjustsforevencolorofthedisplayedline.
OverallGain-Adjuststhegainofthecompletelineupordown.Itadjustsoveralldarknessorlightness.
A
m
p
l
i
t
u
d
eOverall Gain Increases Or
Decreases The Overall Gain
(Amplitude) Of The Complete Line
Near
Gain
Far
Gain
Overall gain adjusts the overall amplitude
of the signal (increases or decreases it).
LEFT CHANNEL GAIN
NEAR GAIN
2
3
5
4
6
7
8
9
10
1
FAR GAIN
2
3
5
4
6
7
8
9
10
1
OVERALL GAIN
2
3
5
4
6
7
8
9
10
1
TVG ADJUSTMENTS
NEAR GAIN FAR GAIN OVERALL GAIN

16
SONARPROCESSOR
OPERATOR SWITCHES AND CONTROLS
THE HARDWARE
Scanning Head(transducermodule):
The scanning head does not contain any operator switches or controls. The scanning head is
factorycalibratedand should notbeopened.
Computer:
ThesystemwillrunonaLaptop,Desktop,oronJWFishersoptional“SplashProof”computer.The
“SplashProof”isacomputersystemthatisbuiltintoaUnderwaterKineticscase.Itutilizesa10”Ultra
Bright”displaywhichismucheasiertoreadinaopenboat.TheSonarProcessorhasanintegrated
interfaceboardthatconvertstheanalogsignalstodigital,andinputsthesignaltothecomputer.The
computer takes the digital signal, displays it, and stores it for future reference. The software has
numeroustoolbarsandpulldownmenusforcontrollingthedisplay. Thereisalsocommunications
fromthecomputertothetransdcucer whichallow theoperatortocontroldifferentfunctionswithinthe
Fish.
Sonar Processor:
TheSonarProcessor amplifies and conditionsthesignalfrom the scanninghead.Theamplifier
in the Sonar Processor is called a Time Variable Gain (TVG) amplifier. The gain of the amplifier
increases over time for each returning signal. The operator has very precise control of the TVG
amplifierusingthethree gain controls.
TheNearGain, Far Gain,andOverallGain controls onthefrontof the SonarProcessorare adjust-
ments for the Time Variable Gain (TVG) amplifier. The goal of these adjustments is to adjust the
amplifiers to compensate for signal losses that occur when the signal travels through the water.
When they are adjusted properly, a reasonably even color will represent the ocean floor from the
center to the outer edge of the scanned area. (See page 15 for a detailed description of the TVG)

17
OPERATOR SWITCHES AND CONTROLS (continued)
• POWERINPUT - ThepowerinputfortheSonarProcessorcanbeany voltage between 9 and
12 volts dc. A wall transformer is also supplied with the SCAN-650 which allows the
Sonar Processor to be powered from 120/220 volts ac. The wall transformer converts
120/220voltsacto12 volts dc. Adcpower cable withredandblack alligator clipsonthe
endisalsosupplied with thesystem;thedccable can be connectedtoanyhighcapacity
9to12 volt battery(suchas a 12vautomobilebattery).
• POWER SWITCH - When switched to the ON position power is applied to the processor’s
electronics and the green LED is illuminated. If the cable to the scanning head is con-
nected(itshouldbebeforepoweristurnedon)thenpowerisalso sent to the “downstairs”
electronics.
• PC INTERFACE -AUSB cable connects the Sonar Processor to the PC
• GPS/LORAN INPUT connector - Your GPS plugs into this connector. The Sonar Processor
requiresaNMEA0183input. Itmaybenecessarytoselectthistypeofinputfroma menu
in the GPS or LORAN unit (see page 34AppendixAfor more detail).
• CABLE LENGTH COMPENSATION switch –Adjusts the gain of an amplifier to compensate
for the various lengths and qualities of signal cables that can be used with the system.
Switch position 1 is used for shorter cables (such as a 150ft cable). Switch position 5 is
usedfor long cables(such as a2000ft cable).
• TRANSDUCER HEAD (SCANNING HEAD) connector - The cable from the Scanning Head
Electronicsattachestothisconnector.
•NEAR GAINCONTROL-Adjuststhegain forobjectscloseto the scanninghead.
• FAR GAIN CONTROL - Adjusts the gain of TVG amplifier so that the reflected signal from
objects farthest from the Head can be amplified sufficiently to produce an image on the
monitor.
•OVERALLGAINCONTROL -Adjuststhe darkness ofthe sonar imageinthe selected color.
SONARPROCESSOR

18
OPERATOR SWITCHES AND CONTROLS (Continued) -
THE SOFTWARE
Themajorityofoperatorcontrolsarelocatedintoolbarsonthescreen.Thenumberoftoolsineach
toolbar,andthereforthenumberoftoolbars,willdependontheresolutionsettingonyourcomputer
display.Theresolutionsettingforthedisplaybelowwas1024by768.
Thereare5pulldownmenusavailable:FILE, VIEW,ACTIONS,SETTINGSandHELP.The
selectionsavailableunder each heading:
File:
• Record new file - This is used to record a new sonar file.
•Open file -Use thisto open anexisting sonar filefor playback.
• Save screen as a picture - Saves the image on the sonar screen
as a Bitmap file.
•Print screen -Printsthe image shownon the screen.
• Exit - closes the SCAN-650 program.
TopToolbar
FilePositionToolbar
Mode/Screen
Toolbar
PlaybackSpeed Bar
or
SweepSpeedBar
Settings
Toolbar
SOFTWARE MENUS:
Sweeporigin
(scanninghead) Rangemarkringsonthedisplaymakeit
easytodeterminethedistancefromthe
sonar head to the target.
Sweepprogress
indicator

19
View:
Thenumberof toolbarsavailableunder VIEW dependsonthe
displayresolution selected forthe monitor.Thehigher resolution
settings permit a single large toolbar (Mode/Screen Toolbar),
where a lower resolution setting (640 by 480) requires three
toolbars(Standard/Playback/Screen Position)toshowthesame
numberoficons.Detailsfor eachofthesetoolbarsiscoveredlater
inthemanual.
• Mode/Screen Toolbar - Displays icons for various tools on left
side of screen.
• Playback Slider bar -Active in Playback mode.Allows the
operatorto control theplaybackspeed of recordedfiles.The speed canbeadjusted from
veryslowtoveryfast.
•File Position Toolbar - Usedwhen Playback isselected.Displays the approximatelocation
in the file for the present image being displayed. Operator can in-
stantlymoveanywhereinthefilebymovingtheslider.
• Screen Position - Moves the origin of the sweep display giving
theoperator a largerviewing area.
Center, Left,Right,Top, Bottom canbe selected.
• Show Range Rings - Makes the range rings visible in the sector
thesonarissweeping. Thiscanassisttheoperator in determining
the distance to a target. The default command is not to show the
rangerings.
• Display GPS - The GPS position is shown in the BOAT LOCA-
TIONsectionoftheRighthandToolbar.
•Settings Toolbar - Show or hide the right hand settings toolbar
Actions:
Thecommandsshown under theACTIONpulldown menu du-
plicatemanyofthecommands shownonthePlaybackandMode/
ScreenToolbars.
•Record -Selectingthis command operates thesonarandsaves
thedata to a file.
• Monitor Mode - This command is for real time viewing of sonar
imageswithout recording data.
• Playback - Used to playback a previously recorded file.
•Playback with ContinuousLoop- Continuously repeatsthe playback ofa recorded file.
• Rewind - Rewind a recorded file.
• Fast Forward - Views the recorded file in fast motion.
• Stop - Stops the recording or playing back of a file.
• Record Highlights - Records select parts (edits) of a previously recorded sonar record to a
OPERATOR SWITCHES AND CONTROLS (continued)

20
OPERATOR SWITCHES AND CONTROLS (continued)
separate file (see page 24 for details).
Settings:
•Set SerialPortnumber-TheSonarProcessorhas anintegrated
USBtoSerialcommunicationsport. Theoperatormustselectthe
Sonar Processor com port for proper operation.
Note: Usethe same physicalUSB porton the PCevery time.
•Set Head Orientation - Thechoicesare normal orinverted. The sonar operatormustidentify
whetherthescanningheadismountedrightsideup(normal)aswouldbeif mounted on top of a
ROV, orupsidedown(inverted)asif it was polemountedand deployed over thesideof a boat.
Iftheorientationissetincorrectly,targetsthatshouldbedisplayed on theleftsideofthescreen
willbe displayed onthe rightside.
• Set Date Format -Theoperator can chooseeither: month/ day/year or day/month/year. The
dateis displayed inthe SettingsToolbar.
•Set Time Format - The operator canchooseeithera 12 houror24hour time format. Thetime
isdisplayed in theSettingsToolbar.
•Restore Default Settings - Returnssettings to theoriginalfactory default settings.
Help:
• Help Topics - Refers you to Operators Manual for help. Company contact information is pro-
vided.
• About Sonar -Revision information andCompanycontactinformation isprovide