Android Oscilloscope. The app is available on F-Droid and here. See the Wiki for more screenshots and documentation.
- Timebase 0.1 ms - 0.5 sec
- Sync control
- Single shot
- Storage
- Index
- Spectrum
###Using The icons on the toolbar are, from left to right:
- Bright line Defeats the sync and single shot
- Single shot Touch the trigger icon to get a trace
- Trigger Touch for a trace
- Sync polarity Reverses the sync polarity
- Timebase Drops a submenu of timebase timings
- Storage Does not clear the display between traces
- Clear Clears the display
- Left Moves the trace to the left
- Right Moves the trace to the right
- Start Moves the trace to the start
- End Moves the trace to the end
- Spectrum Spectrum display
- Settings Input source and About items
The last two or six items may be on the menu, depending on the size of the device.
###Scope Touching the display will produce a vertical index line, which will show the value at that point. The value is arbitrary, as there is automatic gain control on the input so the trace does not get clipped. The position of the index can be finely adjusted by rolling the finger tip. The index can be removed by swiping it off to the left, or touching the Start icon.
Touch the left edge Y scale to adjust the sync level. A pointer will appear which can be adjusted by sliding up and down. Touch the start icon to reset the level to zero.
In single shot mode the timebase may be changed to zoom in and pan left and right using the right and left icons.
###Spectrum The spectrum display shows a spectrum with a logarithmic frequency scale. An index line shows the dominant frequency in the input. The frequency is also displayed in the toolbar. To lock the display, touch spectrum display or the lock icon in the toolbar. Touch it again to release the lock.
###Settings The input source may be selected. Some of the selections will not be available, depending on the device. The about item shows the version and copyright.