PowerTap Joule™ GPS User Guide 9:34A 71º WATTS HR MPH CAD 451 21 96 RIDE TIME KJ 1:06:45 AV WATTS 894 INT Supporting FW 19.087 380 MX WATTS 170 Joule GPS is compatible with any ANT+TM compatible power meter, speed sensor, cadence sensor, or heart rate sensor.
© 2012 Saris Cycling Group, Inc. 5253 Verona Road Madison, WI 53711 All rights reserved. No part of this publication may be copied, photographed, reproduced, translated, transmitted electronically or placed on digital media without the prior written consent of Saris Cycling Group, Inc. Trademarks Saris Cycling Group, Inc.,PowerTap, and PowerTap logo, are all registered trademarks of Saris Cycling Group, Inc.
TABLE OF CONTENTS CHAPTER CHAPTER 1. STARTING OUT _____________ 4 7. Training ___________________ 31 Unpacking Compatibility Installation Charging 2. OVERVIEW & SETUP _________ 6 Dashboards Main Menu User Sensor and Pairing Buttons and Screen 3. DASHBOARDS ______________ 11 Dashboard 1,2,3: Metrics Dashboard 4: Intervals Dashboard 5: GPS Map 4. SENSORS __________________ 17 Sensors Overview Define a Bike Associating Sensors Sensor Details Calibration 5.
CHAPTER 1: STARTING OUT Thank you for purchasing the PowerTap Joule GPS. This user guide is just one of the resources to help you understand all the features the Joule GPS has to offer. Please visit www.PowerTap.
CHAPTER 1: STARTING OUT INSTALLATION Installing the PowerTap Joule GPS OUT-FRONT MOUNT STEM/HANDLEBAR MOUNT INT INT INT INT INT O-Rings: Crisscross under OR stem/handlebar, latch on hooks Zip tie around stem, through slots CHARGING The Joule GPS is powered by energy from a rechargeable battery. To charge the battery, plug into a computer or AC wall adapter (#7060 not included). Typical battery charge lasts approximately 20 hours of operation.
CHAPTER 2: JOULE GPS OVERVIEW & SETUP DASHBOARDS When the Joule GPS is turned on you are presented with one of 5 Dashboard screens (3 dashboards displaying various Metrics, 1 dashboard displaying completed intervals, and 1 dashboard displaying the GPS map). Pressing the Enter button allows you to scroll through all of the Dashboard screens. Dashboard 1, by default, is initially set to display 6 metric windows in the configurable area.
CHAPTER 2: JOULE GPS OVERVIEW & SETUP MAIN MENU Enter the Main Menu to stop and save Rides, to review ride History, create/edit/select/pair Sensors, to use the Training features and functions, to define individual Users, and configure the Device. Access to the main menu can be gained while viewing any Dashboard by pressing and holding the Enter button. Use the (+) and (-) buttons to scroll to your selection. FROM DASHBOARD INT [ENTER] Press & Hold 2 sec.
CHAPTER 2: JOULE GPS OVERVIEW & SETUP USER The Joule GPS allows sharing of the same device with multiple users (i.e. Rachel, Jim, Bob). Each user can have multiple bikes (e.g. TT bike, Road bike, MTB); each bike can have multiple sensors associated with it (e.g. PowerTap, Cadence, HR strap, Speed). A default User is already defined within the Joule GPS. You can either edit the settings associated with that User or create a new user by selecting Add a User.
CHAPTER 2: JOULE GPS OVERVIEW & SETUP SENSORS & PAIRING Pairing is a term used to describe the association of your Joule GPS with a particular sensor that is broadcasting an ANT+TM signal (e.g. a PowerTap hub, a Heart Rate strap, a remote cadence sensor, a remote speed sensor, etc.). Sensors can be shared between bikes (e.g. a heart rate strap). Each User can define multiple bikes. Each bike may have one or more sensors associated with it. Use unique names when creating additional bikes.
CHAPTER 2: JOULE GPS OVERVIEW & SETUP BUTTONS and SCREEN There are three buttons on the sides of the Joule GPS and one large button below the screen. The screen is divided into 3 display areas. The top area, Title Bar, displays time, temperature, compass, and battery level. The large middle section, displays user-selected metrics and can be configured to show 3 to 6 windows. The lower section shows complimentary metrics associated with the highlighted metric.
CHAPTER 3: DASHBOARDS DASHBOARD 1 The Dashboards display various metrics, summaries and navigation information that can be easily customized. When a new metric is highlighted, the detailed view changes to show the related complimentary metrics.
CHAPTER 3: DASHBOARDS DASHBOARD 2 Dashboards can be customized to display from 3 to 6 metric windows. The example on previous page displayed 6. The example below, Dashboard 2, displays 4 metric windows. Each window can display any of 23 metrics, plus even more related/complimentary metrics. See Appendix C for a full list of metrics.
CHAPTER 3: DASHBOARDS DASHBOARD 3 Dashboard 3 is configured to display 3 metric windows (default configuration). Press the Plus (+) or Minus (-) button to highlight a different Metric. See Appendix C for a full list of metrics. Selected metric highlights gray DASHBOARD 3 9:34A A METRIC 1 B 1:06:45 SPD MILES 26.
CHAPTER 3: DASHBOARDS INTERVALS DASHBOARD Intervals are useful for viewing ride data specific to a section of a ride, such as a hill or other period of high intensity riding. The Interval Summary dashboard contains a summary of each interval completed up to that point in time. [ENTER] Press • [ENTER] to advance to the Intervals Dashboard. INT Interval number Current interval at top Interval time Interval distance Average Power Total kilojoules [INTERVAL] 9:34A 71º Intervals 2 321w 113kj 0:04:58 2.
CHAPTER 3: DASHBOARDS INTERVALS continued When using intervals, the Joule can operate in one of two modes: Lap Mode or Interval Mode. These modes refer to the action taken when the [INTERVAL] button is pressed. The default is Lap Mode. The mode can be changed in the Record Control section of the Device menu (see chapter 8).
CHAPTER 3: DASHBOARDS NAVIGATION DASHBOARD The Navigation dashboard displays the path ridden from the start of the ride to your current position. Additionally, the screen displays two configurable metric windows, interval markers (), waypoints (), and a pacing icon (), depending upon which navigation feature is being used. This Dashboard is also used when navigating to a Waypoint or following a route. • Zoom the map in/out by pressing the PLUS (+) and MINUS (-) buttons.
CHAPTER 4: SENSORS SENSOR OVERVIEW The Sensor section of the Joule GPS menu is the gateway to all bicycle and sensor associations. In this area you can: • Define and pair various sensors (e.g. power meter, heart rate strap, speed, cadence, PowerCal, PowerBeam, etc.). • Create a “bike” with a specific group of sensors. • Or, if you have already created a bike or two, you can select which bike description you are about to ride or “use,” or which bike description to “edit.
CHAPTER 4: SENSORS DEFINING A BIKE Display the bike definition screen by selecting an existing bike to “edit” or by adding a new “Bike.” The definition contains the bike name, weight of the bike, and links to any associated sensors. Also, the bike definition can be deleted here. 9:34A FROM DASHBOARD INT [ENTER] Press & Hold 3 sec. to enter Menus. Scroll to Sensors; Press •[ENTER]; Scroll to either an existing bike to edit or to “Add a Bike” to create a new bike.
CHAPTER 4: SENSORS ASSOCIATING SENSORS For sensor association, there are two options: Pair All or Pair Individually. PAIR ALL PAIR INDIVIDUALLY 9:34A 9:34A Bike1 Name Bike1 Weight 17.0 Pair All Power Sensor Power1 Cadence Sensor None Speed/Combo None Heart Rate Sensor HeartRate1 RU Sensor None PAIRING Delete Bike Back to Sensors Bike1 Name Bike1 Weight 17.
CHAPTER 4: SENSORS SENSOR TYPE DETAILS For each type of sensor the detail screen displays items common to all sensors, including activation and pairing functions, an editable name and an editiable I.D. The “Start Pairing” option will automatically fill in the I.D. when pairing completes. If you know the I.D. of a particular sensor you can manually enter it into the field.
CHAPTER 4: SENSORS CALIBRATION, AUTO and MANUAL ZERO There are many environmental factors that can affect the accuracy of a power meter. Temperature, humidity, and circuit resistance are part of the measurement, but none of them remain constant while riding. A power meter must account for those changes to remain accurate. Auto-zero recalibrates the power meter over and over during a ride to keep the measurements from drifting.
CHAPTER 4: SENSORS CALIBRATION, PowerBeam Once you are paired with the PowerBeam Resistance Unit (RU) there are two options available to calibrate the device: Rolldown calibration or Manual Calibration. There is also an option to reset the most recent calibration back to the factory default values. 9:34A 9:34A RU Sensor Activate Sensor Start Pairing Name RU1 Sensor ID 130 Delete Sensor Calibrate RU Calibration Roll Down Manual Reset to Default 9:34A RU Roll Down mph 0.
CHAPTER 5: NAVIGATION NAVIGATION OVERVIEW The Navigation section of the Joule GPS menu allows you work with a variety of features including Waypoints, Routes, Compass calibration, etc. Waypoints assist with remembering and navigating to a particular location. Routes allow you to follow a particular predefined path. Waypoints can be created directly on the Joule GPS and stored on the Joule or in the PowerTap PowerAgent software application (available on both Mac and PC).
CHAPTER 5: NAVIGATION ROUTES OVERVIEW Routes allow you to navigate an unfamiliar path. Routes can also be used for training. By following a previously ridden route, you can compare your current pace against the pace associated with the route. Creating Routes: Routes can be created from various sources: • From previous rides on the Joule GPS. • From previous rides (activities) stored in the PowerTap PowerAgent software. • Via your favorite mapping web site, exported, and copied to the Joule GPS.
CHAPTER 5: NAVIGATION ROUTES, continued To ride a route: • Select it from your list of routes.The Route Details display including route name, length and location of the route. • Select Ride Route. The Route Attributes display including the pacing information associated with the route. • Select Start. The Navigation dashboard will appear, displaying the route, your position, and the position of the Ride Partner.
CHAPTER 5: NAVIGATION ROUTES, continued When the route selected contains associated Turn by Turn directions, a Route Cue Sheet dashboard will appear in your list of dashboards. The Route dashboard will display the heading, the distance, and direction to the next route point (a turn or point of interset). The route is also displayed on Navigation dashboard. If any other dashboard is displayed, notice messages will appear over the dashboard when you are within 200 meters of the upcoming turn.
CHAPTER 5: NAVIGATION WAYPOINTS For the purposes of the Joule GPS, waypoints are single specific locations on earth. Your home can be a waypoint. Your favorite trail head or cafe can be a waypoint. The Joule GPS can create, delete, select, and store waypoints. Each waypoint you create is stored on the device. Each waypoint is listed by its name, a distance and heading from your current location. A waypoint labeled “Start” is always in the list and represents the starting point of your ride.
CHAPTER 5: NAVIGATION WAYPOINTS, continued To navigate to a particular waypoint, select it from the list. At this point you can navigate to it, rename it or delete it. Selecting the Navigate To option will take you the Navigation Dashboard. The name of the waypoint will be listed at the top of the screen along with the distance to the waypoint, from your current position, along a straight line, in the direction indicated by the heading arrow.
CHAPTER 5: NAVIGATION GPS STATUS Information related to your GPS signal can be checked in the GPS Status area. Your GPS signal can be set to Active or Off. The current accuracy of your position is estimated in meters. Accuracy improves as the device locks onto more than 4 satellites. The exact location of your position in Latitude and Longitude notation (i.e. degrees, minutes, seconds) is displayed. Also, the current altitude as calculated by the Joule GPS barometer.
CHAPTER 5: NAVIGATION COMPASS The Joule GPS contains a magnetic compass. The arrow near the right side of the Title bar on the dashboard points North, regardless of your direction of travel. It is good practice to calibrate the compass upon receipt of the device as well as after each firmware upgrade. Compass Arrow FROM DASHBOARD 9:34A 71º Main Menu 9:34A 9:34A Navigation Compass INT [ENTER] Press & Hold 3 sec. to enter Menus.
CHAPTER 6: RIDE HISTORY HISTORY OVEWVIEW The Ride History area allows access to previous rides and ride summaries stored on the Joule GPS. You can select a full ride, a ride summary, or display a report. Reports compare current ride metrics against averages over a specific time frame (e.g. 1 week, 2 week, 1 month, etc.). A full ride can be converted to a route or a workout.
CHAPTER 6: RIDE HISTORY SUMMARY REPORTS The Joule GPS can create summary reports comparing one of your rides to averages over a previous time frame. Report types include summaries of ride data related to Peak Power, Work, Climbing, Time in Zones, and more. Once a ride is selected, the ride data is compiled into a report. The report compares metrics from the selected ride to averages over the previous week, or 2 weeks, or 4 weeks, up to 12 months prior.
CHAPTER 6: RIDE HISTORY REPORTS, Continued There are two additional types of ride history reports: • Maximums: Compare maximums from all rides stored on Joule with averages over the selected time frame. • Totals: Compare ride data totals over the selected time period with averages over the same time frame. For more information on the details of the report, see appendix A. FROM DASHBOARD 9:34A 71º 9:34A Main Menu [ENTER] Press & Hold 3 sec. to enter Menus.
CHAPTER 6: RIDE HISTORY CONVERT RIDES Rides stored on the Joule GPS can be converted into routes or workouts. The conversion must be done from a full ride file stored on the Joule. There are two types of ride files stored on your Joule GPS: • Full Ride files contains all ride data, including GPS and elevation data necessary for conversion to Route or Workout. • Ride summary files contain only a small amount of data used by reports.
CHAPTER 7: TRAINING TRAINING using WORKOUTS The Joule GPS has a robust set of features that assist in training. These features include the cability to: • Create, manage and follow a Workout, either outdoor or indoor using the CycleOps PowerBeam Pro Trainer; • Set up Auto Laps based on time, distance or GPS position; • Set a Countdown reminder using time, distance or quantity of work. Create and manage the workout scripts using the PowerTap PowerAgent application software.
CHAPTER 7: TRAINING TRAINING with PowerBeam PRO using Scripted WORKOUTS When creating a“scripted” workout, resistance can be based on: • Target Slope - mimicking the resistance of a specific grade or incline. • Target Power - a specific resistance value in terms of watts. • Power Range - resistance within a range of wattage values. • Power Zone - a number representing a range of power values. The length of each segment can be based on distance or time.
CHAPTER 7: TRAINING TRAINING with PowerBeam PRO using Manual WORKOUTS Manual or “unscripted” workouts are exclusively available when using the CycleOps PowerBeam Pro trainer or i400 Series indoor cycles. When paired to one of these units, two additional choices appear in the Workouts menu: • Manual Slope: Target Slope Mode - set the resistance to mimic a specific grade or incline percentage. • Manual Power: Target Power Mode - set the resistance to a specific power value. No workout script is necessary.
CHAPTER 7: TRAINING TRAINING using AUTO LAP Auto Lap allows you to set the Joule GPS to record laps automatically during your ride based on either time , distance traveled, or passing a specific GPS position point. The lap is automatically marked and will appear on the Interval dashboard. Select Off to turn Auto Lap off. NOTE: Auto Lap only functions when the Joule is set to “Lap Mode” (see Device, chapter 8) FROM DASHBOARD 9:34A Training 9:34A Auto Lap 9:34A Auto Lap INT [ENTER] Press & Hold 3 sec.
CHAPTER 7: TRAINING TRAINING using COUNTDOWN Countdown allows you to set the Joule GPS to notify you when a specific: • Distance has been traveled; • Amount of time has passed; • Amount of work has been completed (measured in kilojoules). In order to use the Countdown feature you must select the Countdown metric for display in one of your Dashboards. See chapters 3 and 8, and Appendix C for more information on setting display metrics. FROM DASHBOARD INT [ENTER] Press & Hold 3 sec. to enter Menus.
CHAPTER 8: DEVICE MENU DEVICE Overview, DATE & TIME The final choice on the Main Menu has to do with configuring the device itself. This includes time and date settings; display settings (dashboard configuration, lighting, sleep, language and units); device memory management, data recording control, odometer management, display smoothing and averaging, the altimeter offset and information about the Joule GPS itself, such as firmware version numbers.
CHAPTER 8: DEVICE MENU DEVICE DISPLAY All of the Dashboard configuration, lighting levels, sleep, language, metrics, and units can be set in the Device Display area. You can determine the number of dashboards to display, as well as the number and type of metric associated with each dashboard. See Appendix C for a full list of all metrics. FROM DASHBOARD 9:34A 71º Main Menu 9:34A Device 9:34A Display INT [ENTER] Press & Hold 3 sec. to enter Menus.
CHAPTER 8: DEVICE MENU DEVICE AVERAGING The Device Display Averaging page allows you to adjust the way Power and Cadence data is presented during a ride. Select a specific amount of time to average the raw second-by-second data values for power and/or cadence, prior to display. The result is a smoother, steadier value displayed to the rider, over the duration of the ride. The raw data is still written to the ride file.
CHAPTER 8: DEVICE MENU DEVICE RECORD CONTROL The Record Control page allows the user to set: • How the Joule GPS records data during a ride, • When the ride recording is automatically saved, • How the [INTERVAL] button works when pressed. FROM DASHBOARD INT [ENTER] Press & Hold 3 sec. to enter Menus.
CHAPTER 8: DEVICE MENU DEVICE MEMORY The Memory page allows the user to monitor and manage the space available on the Joule GPS. Also the odometer value can be monitored, updated or reset. Ride summary data, used for history reports (Chapter 6), and complete Ride files can be cleared here. FROM DASHBOARD 9:34A 71º Main Menu 9:34A Device 9:34A Memory INT [ENTER] Press & Hold 3 sec. to enter Menus.
CHAPTER 8: DEVICE MENU DEVICE ALTIMETER The Joule GPS contains a barometric Altimeter that allows you to monitor your current altitude, also referred to as current elevation. Selecting Altimeter in the Device menu shows the current altitude, as calculated from the barometer. You may set a known value for “home” altitude or the elevation of the starting point of the ride, and adjust the value of the current altitude to this known value.
CHAPTER 8: DEVICE MENU DEVICE ABOUT JOULE This screen contains information about the Joule GPS, including the version of firmware currently running on the device and the number for Customer Support, typically available Monday through Friday, 8 a.m. to 5 p.m., Central Standard Time. FROM DASHBOARD 9:34A 71º Main Menu 9:34A Device 9:34A About Joule INT [ENTER] Press & Hold 3 sec. to enter Menus.
CHAPTER 9: DATA & DOWNLOADS DOWNLOAD To further configure the Joule GPS and customize the dashboards, install PowerAgent software from www.PowerTap.com/poweragent. PowerAgent also allows you to download and analyze your ride data, configure your Joule settings in a more user-friendly manor, manage route, workout, and waypoints, as well as upload your ride to different social media and social fitness sites.
CHAPTER 11: IMPORTANT PRECAUTIONS and NOTES ! IMPORTANT • Keep eyes on the road. Do not become overly engaged with display. • We recommend getting familiar with the computer functions while stationary. • The computer and chest strap are water resistant, not waterproof. Avoid sustained water contact and do not deliberately place in water or under high-pressure sprays. • Avoid spraying the unit directly with solvent. Do not use thinner or other solvents to clean parts.
CHAPTER 12: FEATURES AND TECHNICAL SPECIFICATIONS FOR JOULE GPS JOULE GPS FEATURES 3 Customizable Dashboards Altitude Auto Lap marking via time, distance, or position Battery Level Indicator (sensors, Joule GPS) Cadence (current, average, maximum) Countdown timers (Time, Distance, Kilojoules) Current Heading Distance Remaining in Workout Distance to Next Route Point Distance to Ride Partner Heading to Next Route Point Heart Rate (current, average, maximum) Heart Rate Zone Intensity Factor (IF) Intervals Sum
CHAPTER 12: FEATURES AND TECHNICAL SPECIFICATIONS FOR JOULE GPS JOULE GPS TECHNICAL SPECIFICATIONS ANT+TM Compatible Barometric Altimeter Battery Battery Life Display Size Display Type Download cable Interval button Mount Type Operational Temperature Ride History Ride Memory Unit Dimensions Water Resistant Weight Yes Yes Rechargeable Approximately 20 hours 40L x 30W (mm) Dot matrix (128x160) Micro USB Yes Stem/Handlebar, Front 0-140 F degrees 1 year Approximately 80 hours 78L x 53W x 26D (mm) Yes, IPX 7 70
CHAPTER 13: Warranty WARRANTY In the event that warranty service is required, original sales receipt may be required. The Joule is warranted to the original retail purchaser to be free from defects in materials and workmanship. Warranty coverage is valid to the original purchaser only and proof of purchase will be required. • Electronics - 1 year - 2 years (Europe) THIS WARRANTY DOES NOT COVER: • Normal wear and tear.
Appendix A: HISTORY REPORTS Summary Report Definitions Ride Time Time of ride defined as any time spent moving. Note: time spent stopped can be included if Joule Mode settings are changed from speed record control to heart rate record control. MI/KM The ride length from start to finish measured in miles or kilometers. KJ Kilojoule (1000 Joules). A Joule is unit of work equal to the work done by a force of 1 newton to move an object a distance of 1 meter.
Appendix A: HISTORY REPORTS Power Detail Report AV WATTS 1. Average power during a ride. 2. A common unit used to express effort or intensity amongst cyclists. Note: Average calculation may or may not include zeros (time spent coasting or with no power) depending on Joule’s set up. By default, zeros are included. For 2 WK, 4 WK rolling averages a time weighted average over the selectable time period is used. MX WATTS Maximum power in watts during a ride.
Appendix A: HISTORY REPORTS Work Report and Peak Power Report KJ Kilojoule (1000 Joules). A Joule is unit of work equal to the work done by a force of 1 newton to move an object a distance of 1 meter. Kilojoules are a common unit used to express the total volume of work accomplished during a given workout, ride, or exercise bout. Kilojoules are used to express the total training load. One Joule per second equals 1 watt.
Appendix A: HISTORY REPORTS Time in Zones Report Training Zones 1. Discrete bins or intervals specific to a particular energy or physiological system. From short maximal efforts to long maximal efforts these energy systems run along a continuum from anaerobic to aerobic metabolic pathways. Common reference points for this continuum include the power at lactate threshold and power at VO2 max. Recovery Zone (Zone 1) 1. An easy exercise intensity where there is minimal stress or strain on the body. 2.
Appendix A: HISTORY REPORTS Time in Zones Report...Continued Race Pace Zone (Zone 4) 1. An extremely hard or all out intensity zone. 2. On a 1 to 10 RPE scale, an intensity corresponding to a 7 to 8 or “really hard” to “really really hard.” 3. On a 6 to 20 RPE sale, an intensity corresponding to a 16 to 18 or “very hard” to “very very hard.” 4. An exercise intensity dependent primarily on the aerobic and anaerobic metabolism of carbohydrate. 5.
Appendix A: HISTORY REPORTS Climbing and Surges Report M/FT GAIN The total vertical distance in feet or meters traveled or climbed over a given distance ridden. AV% GRADE The rise or vertical increase in elevation divided by the run or horizontal distance traveled multiplied by 100 (rise ÷ run x 100). M/FT LOST The total vertical distance in feet or meters descended over a given distance ridden. VAM 1. The rate of vertical ascent in meters per hour.
Appendix B: POP-UP WINDOWS This section describes the various pop-up messages you may see on the device.
Appendix B: POP-UP WINDOWS This section describes the various pop-up messages you may see on the device.
Appendix B: POP-UP WINDOWS This section describes the various pop-up messages you may see on the device. Message Calculate a new HR to Power Calibration. 5 min warm up, then 15 minutes in 5 segments, maintaining steady cadence Cancel Test Complete accuracy = _._ FTP = ___ Back Calibration Unsuccessful Sending Cancel Success Failed Clear Memory Are you sure? This will not affect any reports. No Clear History Are you sure? This will delete all ride data and reports.
Appendix C: METRIC LIST Category Metric 1 Metric 2 Metric 3 Cadence Current Cadence Average Cadence Maximum Cadence CAD 250 AV CAD 250 MX CAD 250 Countdown Time Distance Countdown Kilojoules Countdown RIDE TIME MILES 99:59:59 999.9 9999 Vertical ascent Current Altitude (ft or m) Total Ascent (ft or m) VAM 45.
Appendix C: METRIC LIST Category Ride Partner Route Scores Speed Surges Watts/kg Metric 1 Metric 2 Metric 3 Pacer Time Escape/Closure Rate PACER MI -99.9 PACER TM ESCAPE RT 99:59:59 99.9 Distance To Heading To Cur. Heading or Bearing DIST TO 99.99 HDG TO 99.99 SSE Training Stress Score Normalized Power Intensity Factor TSS 234.7 NORM PWR 2999 2.000 Current Speed Average Speed Maximum Speed 20.0 MPH 20.0 AV MPH 20.
Appendix D: GPS OVERVIEW Understanding GPS Signal Acquisition and Signal Strength Overview: The Global Positioning System, GPS, originally developed for military purposes, was deployed over the span of years beginning in the 1980s, completing deployment in 1995. Today the GPS system is primarily used for civilian applications.
Appendix D: GPS OVERVIEW Understanding GPS, continued canyons. It can be hard to receive a satellite signal when not much sky is visible. Similarly, in urban areas, tall buildings, sometimes referred to as urban canyons, can cut down on the amount of viewable sky. Also, in rural areas, where the receiver may be under tree-lined roads or trails, the density of the tree canopy could have an effect on the GPS signal.
Appendix D: GPS OVERVIEW Understanding GPS, continued A receiver will need to lock on a minimum of 4 satellites to get an initial good position location. In order to find other satellites the receiver will reference a copy of a data file, containing position data of all other satellites in the system. This file is commonly referred to as the almanac file. Each satellite is in constant communication with the other satellites in the system.
Appendix E: BUTTON COMBINATIONS, SHORT CUTS and QUICK LINKS 9:34A [ENTER] button 71º WATTS HR MPH CAD 283 21 160 96 RIDE TIME KJ 1:06:45 AV WATTS [PLUS] button 780 MX WATTS 214 894 [INTERVAL] button INT [MINUS] button Function Dashboard to Menus Back to Previous Screen Menus to Dashboard Find Sensors Interval/Ride Mode toggle Sleep Ride Menu Quick Display Metric Rotation Quick Backlight Shifting, Target Slope Manual Zero PowerBeam Calibration Active Bike Ride Partner (Pacer) Reset Butto
