background image

The uses for the Sailcomp's many features during a race are listed below in order of
how you would use them in a race.

1. Shooting the Wind

You can use the 

Off-Course Mode

to shoot the wind before a race.  While the boat is

head to wind, you can push the  crs button when in Off-Course Mode so that the
Sailcomp will remember the bearing for you.  This way, the next time you shoot the
wind, it will show you graphically if the wind has gone left or right.  If you are in a
small, light boat, you may want to reduce the damping on the compass to position #1
so that the display will give you fast information.  This ensures that you will be able to
take a quick accurate reading before your boat goes into irons.

2. The Starting Line

You can use the accuracy of the digital compass to precisely determine which end of
the line is favored and exploit this to your advantage.  By carefully sighting the wind
and then the starting line, even a 2 or 3 degree favor can be detected.  The mechanics
of this operation are quite simple.  First, point your boat into the wind and remember
the heading.  Next, run the starting line from one end to the other and again note your
compass heading.  Now, subtract the two numbers.  If the line is perfectly square, the
difference should be 90 degrees.  If it's more than 90 you were heading away from the
favored end.  If it is less than 90, you were heading toward the favored end.  To most
sailors, this is nothing new.  True enough, but having the exact number on a digital
readout makes it easier to do the math and more accurate than some of the other meth-
ods now in vogue.  Detecting a 3 degree favor may not seem that important, but if the
starting line is 1000 feet long (typical for a 30-40 boat fleet), then you would be starting
72 feet ahead of someone at the other end.  Those 2 or 3 boat lengths will mean the dif-
ference between clean and dirty air for the first part of the beat.

3. The Start

Obviously, being at the starting line when the gun goes off is your goal.  By using the

Starting Timer Mode

, both crew and skipper can see how much time is left by a mere

glance at the display.  And if you need to see the compass heading or any other data
within the 10 minute pre-race time,  press the desired mode's button to access this
mode's data. When you press the timer button again, the countdown will reappear
with the time remaining on the display.  

The graphic display of the last 8 seconds-until-start has been designed to catch the
frantic crew's attention with a graphic countdown on the upper bar graph display.

32

IV. RACING WITH THE SAILCOMP

Содержание Sailcomp 103AC

Страница 1: ...e Mode 24 3 Nav Repeater Mode 26 4 Head Lift Mode 28 5 Starting Timer Mode 29 6 Switching Between Modes 30 IV RACING WITH THE SAILCOMP 1 Shooting the Wind 32 2 The Starting Line 32 3 The Start 32 4 Th...

Страница 2: ...f utmost importance to its accuracy and precision and most of all to your enjoyment of your new electronic compass nav repeater Serious damage inaccuracies or loss of warranty can result from incorrec...

Страница 3: ...ng hardware This includes Fluxgate Sensor Unit 3 3 4 10 self tapping screws Junction Box 4 3 4 6 self thread screws Remote Display Unit 4 1 3 4 10 32 studs 4 10 32 hex nuts 4 10 washers Remote Keypad...

Страница 4: ...or does not contain mag nets it measures the earth s magnetic field electronically Large pieces of metal will distort the earth s flux lines which the sensor measures thus causing some error To minimi...

Страница 5: ...table times keep the sensor away from them 7 other magnetic compasses compasses mounted or stored down below including some sensors from your other electronic gear should be kept away from the sensor...

Страница 6: ...t good locations for the junction box remote display s and remote keypad to ensure that the provided cable is long enough for your installation Junction Box The junction box should be placed in a hand...

Страница 7: ...to the entire crew KVH offers special single and dual display mast brackets which attach to the sail slot and slide into the mast The brackets are designed so that the Cunningham and other control lin...

Страница 8: ...le available in 15 and 25 lengths by contacting your local dealer The system may have up to 100 of extension cable added without losing signal integrity Never try to extend or cut the display cable ke...

Страница 9: ...is manual to the bulkhead or area where you want to mount the display Use a center punch on the crosshairs indicated on the template 2 Drill four 1 4 holes for the enclosed 10 32 studs Then drill the...

Страница 10: ...ly flat surface for the remote keypad follow these instructions carefully Note If it is impossible to reach underneath the keypad to put nuts on the studs you may have to build a mounting plate that y...

Страница 11: ...nector will only fit onto a port in one position and is removed by pushing in on the grip surfaced part of the connector and pulling the connector straight off DO NOT TWIST See illustration left 1 Con...

Страница 12: ...ilcomp s heading data The NMEA lines are used only for interfacing Note Any wires that are not used should be clipped back and insulated from one another The wiring is as follows Nav Repeater Mode bro...

Страница 13: ...signal side b Connect the brown wire NMEA In to the Signal Ground point on the loran or GPS unit 2 The green and orange wires in the power cable are for outputting heading data from your Sailcomp 103A...

Страница 14: ...is installed correctly this indicates that you have some type of magnetic interference on your boat that must be com pensated out of the Sailcomp 103AC You are now ready to compensate your Sailcomp 1...

Страница 15: ...ng its accuracy on your boat and is very easy to do It involves turning your boat through two large lazy circles at a slow steady speed the circles may be slightly out of round or elliptical if necess...

Страница 16: ...your auto compensation and to check that everything is O K see below Accessing the Compensation Dis play for Reviewing Compensation Data on the Sailcomp Remote The Sailcomp 103AC s Compensation Displa...

Страница 17: ...etic field of a particular location may be so different from the fac tory calibration that the sensor will re compensate every 36 while doing a 360 turn Do not be alarmed if the compensation display s...

Страница 18: ...t apply a short push to the nav button The display will flash the current value of the offset Offset is set at the factory to 00 3 If the heading is low or to the minus side on all headings you need t...

Страница 19: ...re adjusted unless the sensor is moved Disabling Enabling Auto Compensation With auto compensation disabled your compass will be using the last compensation that has been stored but will be unable to...

Страница 20: ...loran GPS is not ON or if way points are not entered into the Loran GPS the Sailcomp 103AC display will display when the nav button is pushed Timer The timer button puts the system into Starting Time...

Страница 21: ...Course Mode your present heading is compared to a refer ence heading that you have selected and the difference is displayed in degrees with segments to the left or right on the upper analog display T...

Страница 22: ...ht on the upper part of the display corresponding to how many degrees to port or starboard you are off your reference course s rhumb line By centering the upper display so that there are no segments t...

Страница 23: ...not receiving any information from the loran or GPS When you instruct your loran or GPS to steer you to a waypoint the Nav Display will be activated Every 2 seconds the repeater will alternate betwee...

Страница 24: ...Loran or GPS and are in Nav Repeater Mode 27 MODES NAV REPEATER Distance to Waypoint 3 2 nm 15 nm cross track error to right of track Bearing to Waypoint 085 Distance to Waypoint 3 2 nm 25 nm cross t...

Страница 25: ...n to store your Starboard Tack Average When racing upwind on port or starboard tack if you are sailing closer to the mark than the stored averages more upwind this is called a Lift If you are heading...

Страница 26: ...on port and lifts on star board The computer knows this so you have to keep the two straight The other thing you should keep in mind is that if you get a permanent wind shift of more than 45 degrees y...

Страница 27: ...down the timer button and press the port button Make sure that you keep the timer button depressed while you press the port button The timer will reset to 0 00 and will immediately start another 10 mi...

Страница 28: ...loran or GPS device This principal also works every time you turn the compass on Each time the compass is switched on it has reset all references to 000 by default So if you push any button only once...

Страница 29: ...the two numbers If the line is perfectly square the difference should be 90 degrees If it s more than 90 you were heading away from the favored end If it is less than 90 you were heading toward the fa...

Страница 30: ...ce you feel comfortable with your settings start looking at the compass Note the high and low numbers on each tack Now press the port or stbd button to get into Head Lift Mode When you feel you are on...

Страница 31: ...ou may decide that you are into a persistent left shift pattern Similarly if the number of seg ments seem to be about the same on lifts and headers then you might conclude that it is a simple oscillat...

Страница 32: ...s been a windshift You now are heading farther away from the mark just to keep the same wind angle that you had before All other things being equal like wind speed and boat speed you should jibe now s...

Страница 33: ...A Offset apply a short push to the nav button The display will flash the current value of the offset Offset is set at the factory to 00 Important Note If you added or subtracted A Offset error during...

Страница 34: ...sage If the display alternately flashes Lo and bAt the unit has insufficient voltage to function reliably All functions and auto compensation will be prohibited until the Sailcomp 103AC receives suffi...

Страница 35: ...e 1 4 Interface Capability Loran GPS Input NMEA 0183 Standard Output NMEA 0183 Other optional interfaces available Power Supply Voltage Requirements 12V DC Current Consumption 65 mA light off 97 mA li...

Страница 36: ...a contact cleaner Radio Shack etc Take care not to use any hard object that could bend the connector pins 3 Call the KVH Sales Office Random segments appear All segments come on at once and freeze He...

Страница 37: ...nchor near the sensor If you are not aware of any changes you should check the sensor s environment do an intentional auto com pensation see pgs 17 19 and examine the compensation data pgs 19 20 C com...

Страница 38: ...r plugs or junction box receptacles may be dirty To clean use a soft bristled brush and a contact cleaner Radio Shack etc Take care not to use any hard object that could bend the connector pins 3 Chec...

Страница 39: ...tor pins 5 Call the KVH factory Power switch does not operate Light switch does not operate Damping switch does not operate 1 Check power supply as battery voltage may be too low If so charge battery...

Страница 40: ...Junction Box Function Color Conn Pin No Off Course Red 1 Ground Black 2 Nav Blue 3 Port Trigger Brown 4 Stbd Trigger Green 5 Timer Trigger White 6 Ground Shield 7 Remote Display to Junction Box Funct...

Страница 41: ...sum Similarly checksumLS repre sents the least significant nibble of the checksum The checksum is calculated by XOR ing together all the characters in the sentence up to but not including the characte...

Страница 42: ...5 Format LCXTE A A X XX L N 1 Or ed value Blink and SNR A Valid V Invalid 2 Cycle Lock A Valid V Invalid 3 4 5 Cross Track Error 4 Steer Left or Right L Left R Right 5 Units N Mi The following senten...

Страница 43: ...___ _____________________________________________________________________ _____________________________________________________________________ ________________________________________________________...

Страница 44: ...NITIVE INCI DENTAL TORT OR CONSEQUENTIAL DAMAGES OR LOST PROFITS OR GOODWILL INCLUDING ANY DAMAGES RESULTING FROM LOSS OF USE DELAY IN DELIVERY OR OTHERWISE ARIS ING OUT OF OR IN CONNECTION WITH THE P...

Страница 45: ...8 Remote Display Template 49 APPENDIX DISPLAY TEMPLATE 1 4 4 places 9 16 cut along here...

Страница 46: ...9 Remote Keypad Template 51 APPENDIX KEYPAD TEMPLATE 5 32 2 places 3 4 cut along here...

Отзывы:

Похожие инструкции для Sailcomp 103AC