From GpsWiki
Track Page
From the Track page, you have control to turn track recording On/Off, Save your current active track, Follow a track and Select a track that might be in storage.
- Highlight On and push ENTER to start recording.
- Highlight Off and push ENTER to stop recording.
- Highlight Save and push ENTER to save your Active Track.
- Highlight Clear and push ENTER to clear your Active Track.
- Highlight a Saved Track to explore the Track properties.
For additional information about tracks, see the Track FAQ.
How do I get to the Track Page?
If you have the Tracks page enabled in Page Order, either press the PAGE button or the QUIT button to scroll through your screens until you get to the Tracks page. If the Tracks page is disabled in Page Order (default from factory), then press MENU button, use the UP/DOWN rocker pad to select Tracks, then press ENTER.
Edit Track Settings
Track Settings are access by pressing the MENU button from the Track page.
Track Settings can be setup to record in either Distance or Time.
- Distance - You can set the Track to record one (1) point from every 10' to 999'
- Time - You can set the Track to record one (1) point from every one (1) second to 99 seconds
When Track is Full
- Start Recording New Track - Saves the current Active Track and starts to record a new Track.
- Overwrite Points - Will Overwrite over your current Track starting at the beginning.
- Stop Recording - This will simply stop Recording
Prompt To Reset Trip Info
- With this selected and you Clear the Active Track, it will prompt you to Clear the track and ask if you want to Reset Info (Reset Trip Values, Speeds, Elevations and Device Odometer).
Delete All Saved Tracks
To delete all saved tracks, press MENU from the Track Page, then select "Delete All Saved Tracks" and press ENTER.
With the Manage Memory page displayed, press ENTER to delete All Tracks.
Track Properties
If you have a Saved Track you can either View, Hide, Follow, Delete, Add Comments, Rename or choose a Color for the Track.
- Highlighting View and pushing the ENTER button will take you to the Map Page and display your Track. To have the Track not displayed on the Map Page, go back to your Track Properties, highlight Hide and push the ENTER button.
- To Follow a Track, highlight Follow and push the ENTER button. This will convert the Track to to a new Route and then will switch to the Map Page and display your route.
- To Delete a Track, highlight the desired Track and hit ENTER, then highlight Delete and push ENTER button and Hit Yes to delete it or No to cancel.
- To change the color of your Track, highlight the colored box and push Enter. This will bring up a box with different colors to chose from. Highlight the color you want and push Enter.
- To rename your track, select the Track name and press ENTER.
- To add a Comment, select Comments and press ENTER.
Track Recording Rules
The PN-40 has a track recording default of 1 point every 10 feet. Under optimum conditions, if you start with a blank track log and record until all 10 slots plus the 1 active log is full: - 10 foot recording gives 208 miles of high-detail tracks - 15 foot recording gives 312 miles of high-detail tracks - 20 foot recording gives 416 miles of very good detail tracks.
Math:
10,000 points x (10 feet/1 point) = 100,000 feet
100,000 feet * (1 mi/5280 ft) = 18.94 miles per memory slot.
18.94 miles/slot * 11 slots = 208 miles.
Optimum Conditions
The PN-40 checks to see if it should record a track point once per second. This sets the maximum speed of 10 (feet/second) = 6.8 (miles/hour). Traveling at 2.5, 5, or 10 ft/sec will result in recording one point every 10 feet.
Important: Any faster than 10 ft/sec and the PN-40 will record at a rate of one point per second.
Traveling greater than 10 ft/sec results in less detail, but a greater recording distance. When traveling 15 mph, you typically aren't making a series of rapid direction changes, so the higher resolution isn't necessary.
Track Point Distance Rounding
The PN-40 also rounds off the recording position.
Example: Traveling at a fast walk/slow run of 4 feet/sec (2.7mph)
1 secs - 4 ft
2 secs - 8 ft
3 secs - 12 ft - Record Position
4 secs - 4 ft
5 secs - 8 ft
6 secs - 12 ft - Record Position
etc
At this speed, even though the unit is set for 1 point every 10 feet, it's actually recording one point every 12 feet. This either gains you 20% more track recording distance, or loses 20% resolution, depending on your perspective. This can obviously be scaled for 1 point/20 feet or other recording rates vs speeds to achieve the same percentage difference.
Again assuming the PN-40 is set at 1 point/10 feet, the worst case low-speed scenario is at about 9.5 feet/sec (~6.5 mph) where you gain 90% more track length over your preferred setting.
1 secs - 9.5 ft
2 secs - 19 ft - Record Position
3 secs - 9.5 ft
4 secs - 19 ft - Record Position etc
High speed is obviously the worst if you want detailed resolution. If you are traveling at 75 mph (110 ft/sec), your device will only record one point every 110 feet. As most users rarely run 75 mph while making extremely tight turns, it's rarely an issue and to date, only the cheetahs have complained.
Firmware Version 2.7 Track Management
Firmware v2.7 allows you to copy a saved track to a .GPX file on the SD card. This is a one-way operation. You cannot load a .GPX file into a saved track.
The number of tracks you can copy to the SD card is limited only by the amount of space available on the card. However, there is no change in the number of saved tracks you can keep in internal memory. In order to collect more than 10 tracks on the SD card, you must delete saved tracks after copying them to the SD card. Remember that once you delete the saved track from internal memory, you cannot view, follow or perform track playback.
The .GPX file has the same name as the saved track. If you want to give the copy a meaningful name, change the saved track name before copying it to the SD card. Do not make the track name any longer than 17 characters, which is the length of the automatic track name.
Copied tracks are stored in the "tracks" folder on the SD card.
Copying a Saved Track
To access the Track page, press MENU, use the rocker to highlight Tracks, then press ENTER.
Use the rocker to highlight the track you want to copy to the SD card. Press ENTER to display the Track Properties page for that track.
If you want to give the copy a meaningful name, change the track name now. Use the rocker to highlight the track name, then press ENTER to open the virtual keyboard. Change the track name as desired. Highlight OK on the virtual keyboard and press ENTER to change the name.
To copy the track to the SD card, begin by pressing MENU.
Use the rocker to highlight Copy Track to SD Card, then press ENTER. You will see a progress bar as the unit exports the saved track to a .GPX file on the SD card. Once the progress bar disappears, you can safely delete the saved track if you are sure you will not need to view, follow or perform playback on the track.
If a .GPX file with the same name as the track already exists in the "tracks" folder on the SD card, the unit will prompt you to overwrite the file.
To overwrite the existing file, use the rocker to highlight Yes, then press ENTER. To cancel the copy and retain the existing file, use the rocker to highlight No, then Press ENTER.
