SC-1 Reference Manual Firmware Version 2.
SC-1 Features 1 Contents INTRODUCTION 3 SC-1 FEATURES BASIC AND FULL FIRMWARE VERSION 3 3 DEVICE OVERVIEW 4 DISPLAYS BUTTONS TIPS ON IMPROVING BUTTON RESPONSE BATTERY LIFE INDICATOR GPS DATA STORAGE 4 5 5 6 7 DEVICE OPERATION 8 INSERTING BATTERIES TURNING POWER ON/OFF SIGNAL ACQUISITION LOCK FEATURE SPEED LOCK TIMEOUT LOCK LOCKING RELATED TO TIMER EVENTS CONFIGURING LOCK BEHAVIOR UNLOCKING PROCEDURE OPERATING MODES CYCLING THROUGH MODES UPPER DISPLAY SELECTION SPEEDOMETER MODE COMPASS MODE TACTI
SC-1 Features 2 UPDATING FIRMWARE 31 PC SOFTWARE PACKAGES 31 CONTROL CENTER SPEEDPLAY 31 31 MAINTENANCE 32 CONTACT 33 INDEX 34
SC-1 Features 3 Introduction The SC-1 is a sail training tool designed to provide you with the feedback you need to sail faster. This instruction manual is for the full firmware version.
Displays 4 Device Overview Displays The upper and lower displays can both be used to display speed, heading, tactical heading, VMG, start line proximity or timer information. The information shown on each display is made clear by a mode indicator immediately to the left of the numerical display area. There is no “TIMER” indicator on the upper display. Timer mode on the upper display is indicated simply by the presence of a colon between the minutes and seconds.
Buttons 5 Buttons The SC-1 is controlled by four different capacitive touch sensors. These touch sensors detect the presence of your thumbs when they are placed on top of the regions shown in the diagram. The captions on the above diagram indicate how the different touch sensors will be referred to in the rest of this manual. Tips on Improving Button Response If you are having difficulty triggering the touch sensors, try covering the entire area of the button with your thumb.
Battery Life Indicator 6 Battery Life Indicator The battery life of 20 hrs apply for rechargeable nickel metal hydride (NiMH) batteries. Disposable alkaline batteries will provide approximately 10 hrs of battery life. Also with disposable batteries, there will be a tendency for the life indicator to remain fully illuminated for most of the battery life and only drop down to the lower levels when the batteries are nearly exhausted. The SC-1 will slowly deplete batteries even when it is turned off.
GPS Data Storage 7 GPS Data Storage Whenever the SC-1 is on and has a GPS signal it records GPS information. GPS information recorded is longitude, latitude, speed, heading and time. The SC-1 has room for 20 hours worth of GPS data at a logging rate of 2 seconds. At a logging rate of 4 seconds it can record 40 hours of data and at a logging rate of every 1 second it can record 10 hours of data.
Inserting Batteries 8 Device Operation This section describes everything you need to know before hitting the water with your SC-1. Inserting Batteries Open the waterproof case and insert 3 AA batteries into the metal clips on the circuit board. Be careful to orient the batteries according to the polarity markings on the circuit board. These markings are circled in red on the photograph above. The SC-1 will work with rechargeable nickel metal hydride (NiMH) batteries or standard disposable AA batteries.
Turning Power On/Off 9 Turning Power On/Off The SC-1 Power can be turned on and off without opening the case by following the above procedure.
Signal Acquisition 10 Signal Acquisition The operation of the Velocitek SC-1 relies on low-power radio signals from GPS satellites that orbit the earth at an altitude of approximately 20,000 km. As a result, the SC-1 must be outdoors with a clear view of the sky to function properly. When the SC-1 is first turned on, it must download information from GPS satellites before it can acquire a GPS solution.
Lock Feature 11 Lock Feature The Velocitek SC-1 uses touch sensors to accept user input. Splashing water can trigger the touch sensors. To prevent the device from being inadvertently controlled by splashing water the user can enable lock features. When the device is locked, buttons are non-functional. There are two lock features Speed Lock and Timeout Lock. Speed Lock The unit locks when the device speed exceeds the speed lock value (knots).
Lock Feature • 12 The timer is synchronized Configuring Lock Behavior Lock behavior can be customized by configuring device settings. be configured independently.
Lock Feature 13 Unlocking Procedure When the device is in timeout lock the device can be unlocked by pressing plus, minus then the plus button quickly as shown in the above diagram. When the device is in speed lock the device cannot be unlocked.
Operating Modes 14 Operating Modes The SC-1 has 6 different modes, Speed, Compass, Tactical Heading, Start-Line, Timer and Vmg. Cycling Through Modes You can cycle through the modes by pressing the mode button. Modes can be enabled/disabled by configuring device settings.
Operating Modes 15 Upper Display Selection Speed, heading, tactical heading, distance to line, start timer and VMG can all be displayed in the upper display. The upper display can be selected by changing the lower display to the desired mode and pressing the up button.
Operating Modes 16 Speedometer Mode Speed mode displays speed at an update rate of 2Hz (twice a second). Displayed speed is the Doppler shift speed measured by the GPS unit. The speed can be displayed in knots, miles/hour, kilometers/hour or meter/second by editing the device settings. The default is to display speed in knots. Maximum Speed Recall Maximum speed and maximum 10 second average speed can be recalled by pressing the plus and minus buttons respectively.
Operating Modes 17 Compass Mode The compass mode displays the heading at an update rate of 2Hz (twice a second). GPS Heading The heading displayed by the SC-1 is the GPS Doppler shift heading. The difference of the SC-1 to a conventional magnetic compass is that the SC-1 measures the direction the device is moving in rather than the direction it is pointed in.
Operating Modes 18 Tactical Compass Mode In Tactical Compass mode, the SC-1 displays your heading relative the wind direction stored on the SC-1. To adjust the wind direction to increase the tactical heading, hold the PLUS button. To adjust the wind direction to decrease the tactical heading, hold the MINUS button.
Operating Modes 19 Tactical Heading Explained Tactical heading is the heading relative the wind direction. When sailing by the tell-tales the tactical heading should be equivalent angles on both tacks. This makes wind shifts easy to identify. If you're trimming by your telltales and you start seeing smaller numbers on the tactical compass display you know that you have been lifted, regardless of which tack you are on.
Operating Modes 20 Using the Tactical Compass to Identify Wind Shifts The above sequence shows how you would use the SC-1 to identify a lift while sailing upwind on port tack. The boat in the example sails at 40° to the wind when trimmed using telltales. 1 Imagine the wind clocking 25° to the left, lifting you on port tack and causing your leeward jib telltale to flutter. While real wind direction has changed by 25° the reference wind direction stored on the SC-1 remains unchanged.
Operating Modes 21 VMG Mode In VMG Mode the SC-1 shows your Velocity Made Good based on a wind direction you have defined. The display is updated at 2Hz (twice a second). The wind direction is defined by pressing the plus and minus buttons in VMG mode. Holding the plus button increases the angle and holding the minus button decreases the angle. Release the button to define the displayed direction as the new wind direction.
Operating Modes 22 VMG Explained Whether you are sailing upwind or downwind, the SC-1 breaks your boat's velocity into two perpendicular components. One component is perpendicular to the wind direction. This component is effectively wasted as it is not helping you make any progress upwind or downwind. The other component is parallel to the wind direction. This is your VMG.
Operating Modes 23 Timer Mode In timer mode the SC-1 provides a countdown timer. Pressing the minus button will start the countdown. Once the countdown is started, holding the plus button for 3 seconds will reset the timer, pressing the minus button will synchronize the timer and pressing the plus button will increment the countdown by a minute. When the timer expires it resets.
Operating Modes 24 Button Locking In timer mode when the timer is started or synchronized the buttons lock, if the timeout lock is enabled. This is to prevent unintentional button pressing after the timer has started or been synchronized. You must follow the unlock procedure to unlock the buttons to use the button after these events. Configuring Countdown The start sequence can be configured by selecting sync points in device settings.
Operating Modes 25 Start-Line Proximity Mode The start-line proximity mode displays the distance to start-line in meters. When the start-line is not set “SEt” is displayed. Start-line ends can be defined by using the plus and minus buttons as shown in the above diagram.
Operating Modes 26 Distance to Line Distance to line is the perpendicular distance in meters between the SC-1 and the start-line. You enter the location of the start-line by setting one reference point into the device near the committee boat and another one near the pin. Tips on Setting the Start-Line Best practice is to set the committee and pin end by sailing by the marks before the race along the start-line as illustrated in the above diagram.
Operating Modes 27 Accuracy The accuracy of the start distance to line provided by the Velocitek SC-1 varies from 0.75 to 3 meters depending on the number of GPS satellites in view and the location of those satellites in the sky.
Operating Modes Data Logger Mode By disabling all modes in the device settings, you can use the SC-1 strictly as a data logger. In this mode, the device displays “OFF” in the lower display at all times. This mode allows you to log GPS tracks during races while conforming to any class rules that prohibit electronic or GPS instruments.
Device Operation 29 Device Settings Device settings allow you to customize the SC-1 behavior. The settings are configurable by connecting the SC-1 to a PC. Following are the available device settings. Compass Declination When defined to the local declination the compass measurement will be referenced to local magnetic north. Positive declination represents west and negative declination represents east. To reference the compass measurement to true north, input 0 for compass declination.
Device Operation 30 Start line Mode Changes To If the top or bottom display is showing the start line mode it will switch to the mode you choose here when the start timer expires. You can select from any of the modes. The default mode to change to is compass mode. Timeout Lock Enabled Checking the box enables timeout lock. When enabled, the SC-1 locks when the buttons have been inactive for a time period over the timeout lock value (seconds).
Updating Firmware 31 Updating Firmware Firmware is the program that runs on the SC-1’s microprocessor to control how it operates. Periodically Velocitek releases new versions of firmware to add functionality to the SC-1. These updates are designed to either improve your device's performance or to tailor its functionality towards a specialized application. To perform firmware updates you must connect your SC-1 to a PC with Velocitek Software Package.
Maintenance 32 Maintenance To ensure your SC-1's enclosure remains watertight and the electronics are not destroyed by corrosion, please take the following precautions: Store your SC-1 with the latches undone and the enclosure partially open. This leaves the gasket decompressed and allows it to expand. This ensures that it will fit tightly when the enclosure is latched and fully closed.
Contact Contact Mail: Velocitek, LLC 271 B Kahiko St. Paia, HI 96779 USA Fax: +1-650-618-2679 Phone: Calls will be answered 9AM ~ 6PM, Hawaiian Standard Time (GMT-10) US and Canada: +1-800-693-1610 International: +1-650-362-0499 Email: support@velocitek.com Website: http://www.velocitek.com Forum: http://www.velocitek.com/forums/ Support: http://www.velocitek.
Index 34 Index B O Battery Life .......................................................................... 6 Beep Enabled .................................................................... 29 Buttons ................................................................................ 5 Operating Modes .............................................................. 14 C PC Software Packages ....................................................... 31 Clearing Start-line ...................................
