The Deceleration Mode allows you to perform deceleration tests using pre-defined configurations, or using your own specified values. It is accessed by pressing the Mode Button at the bottom of the screen and selecting Decel.
The last selected Deceleration test will be displayed after each power cycle. Speed parameters are used to start and end the test. Test results displayed on the screen of the VBOX Touch will remain on screen at the end of the test until the next start condition is met.
Speed units used are dependent on what is selected within the General Settings area.
Decel Mode Overview
The Deceleration screen displays current/completed test information.
The screen is split in two halves:
- Left hand side: This includes a live speed display which always show the current speed of the vehicle, irrespective of any test start or end conditions. If the vehicle is traveling less than 0.5 km/h or satellite lock is lost (less than 4 sats), the value will display as 000.0.
- Right hand side: This contains test information: Distance travelled, run number, time taken, average deceleration achieved, maximum deceleration achieved (g) and height difference. These values will start to populate once the start condition of the test is met. When the end condition is met, they will remain on screen until the start condition is met again. A test can be reset by pressing the Reset button at the bottom of the screen.
Note: If a battery is connected, the Current Test header will not include units.
Selecting a Test
A Decel Test can be chosen by pressing the Settings Button on the bottom left of the screen. Preset and custom test options are then available on the right hand side of the presented screen.
The currently selected test is highlighted on the screen and will be remembered for future use, even if another mode is chosen.
The Performance Box Touch is supplied preset with 5 speed Decel tests, press a test to confirm. The 60 – 0 test is selected by default.
- 60 – 0 (km/h or mph) default
- 100 – 0 (km/h or mph)
- 200 – 0 (km/h or mph)
- 300 – 0 (km/h or mph)
- 400 – 0 (km/h or mph)
When a test is selected, the name will be displayed at the top right of the Decel Mode screen.
You can choose your own test start and end conditions by pressing the Custom Test button on the bottom right of the test selection area.
You can then define the start and end speed conditions by pressing the corresponding buttons and using the keypad presented.
Start Speed Keypad Example
To save the value inputted, press the Confirm Button on the bottom right of the screen, or press the Cancel Button on the bottom left of the screen to return the Settings screen without saving.
Note: The maximum input value for speed is 999.9 and can be entered up to 1 decimal place.
To save the Custom Test, press the Confirm Button on the bottom right of the screen, or press the Cancel Button on the bottom left of the screen to go back to the Decel Mode screen without saving.
The name of the selected test is displayed at the top right of the main Decel Mode screen. The last defined Custom Test will be remembered for future use, even if a Preset Test or another mode is chosen.
The Decel Mode settings screen can be accessed by selecting the Settings Button on the bottom left of the screen. It enables you to choose the test parameters and also includes other test options.
To return to the main screen, select the Exit Button on the bottom left.
Alert at End
By default, an audible and visual alert signals when the test end criteria is met. The Performance Box Touch will beep and the 4 LEDs across the top of the device will flash green for 0.5 s. Tap the button to disable.
Selecting the Screenshot Button will save a full image of what is shown on screen to the inserted SD card. If the screenshot has been saved successfully, the LEDs will illuminate yellow in sequence from left to right to display the progress of writing to the SD card. When screen capture is complete, Performance Box Touch will emit an audible confirmation notification. If the screenshot has been saved unsuccessfully, for example no SD card is inserted or the card is full, the SD Card Icon at the top of the screen will flash 3 times and Performance Box Touch will emit an audible error notification.
A captured image is saved as a 1.5 MB bitmap image, orientated at 90° to the original screen image, with the prefix 'screenshot'.
IMPORTANT – NEVER remove the SD card when a screenshot is being taken, it could cause the unit to crash!
A history of the test results can be viewed by selecting the Results Button at the bottom of the screen.
Test results will display until a new test type is chosen or the Reset Button is pressed.
Sample results screen
Tests will be displayed in chronological order and the fastest will be highlighted. To scroll through the results, use the scroll bar on the right hand of the screen.
Each new session will have a separate header, displaying the time and date for the first completed test in that session.
- Test type
- Time of first completed run in session
- Date of first completed run in session
- Test run number
- Test completion time
- Test completion distance (km/h or mph)
- Maximum speed achieved during test run (km/h or mph)
- Maximum deceleration achieved during test run (g)
- Altitude difference between start of test and end of test (m or ft)
It is possible take a screenshot of the test history by pressing the Screenshot Button .
To return to the main screen, select the Exit Button on the bottom left of the screen.
IMPORTANT - If the unit is power cycled, up to a maximum of 127 tests will be remembered and displayed in chronological order. However if more tests have been completed, they will still be recorded on the SD card.
You can also save the results as a .txt or .csv file (dependent on the option selected) to the SD card by selecting the Save Button on the bottom of the screen. When pressed, the unit will emit an audible confirmation notification. If the results have been saved unsuccessfully, for example no SD card is inserted or the card is full, the button will flash 3 times and Performance Box Touch will emit an audible error notification.
If saved successfully, the file name will include the test type, the date and also the time, taken from the first completed run in that session. Along with the test history information described above, the results file also incudes average acceleration information, as well as the latitude and longitude position (in degrees and decimal degrees format) added to the session header.
Selecting the Reset Button on the bottom right of the screen will reset all test results shown on the current screen. When pressed, the LEDs will briefly flash green twice and the unit will emit an audible confirmation notification.