Sunday, March 26, 2017

Datalogging

Overview

  • Datalog is recorded continuously and stored as a temporary file in device's internal storage (size is capped at ~20MB)
  • Datalog holds only the most recent data, older data are overwritten

  • Datalogging activity layout

    • Sample timestamp - date and time of current data sample, the value on the right shows current timeline scale
    • Playback control bar - allows you to seek through current datalog and play it in real time
    • Parameter list - list of parameter categories that can be expanded further for individual parameter selection
    • Pop-up menu - pop-up menu with actions

    Pop-up menu

    • Live mode - show parameter values in real time as they're being recorded
    • Refresh log - refresh datalog display buffer with the most recent data
    • Alarm - show area where the parameter values trigger an alarm
    • Save - permanently save selected datalog range into a file (for more details watch the video demonstration below)
    • Load - load (or delete) persisted datalog file

    Gestures

  • swiping horizontaly moves current datalog position forwards or backwards on the timeline, swiping vertically scrolls datalog vertically

  • pinching horizontally changes timeline scale, pinching vertically changes vertical size scale