Data Sheet

2/7/2019 Home · bluerobotics/ping-viewer Wiki · GitHub
https://github.com/bluerobotics/ping-viewer/wiki#installing-and-running-the-application 6/8
The Distance Axis is labeled with bold numbers on the right-hand edge of the Waterfall. This
axis represents the distance from the Ping device transducer. The axis runs vertically down
the screen, with the face of the transducer (zero distance) located at the top of the window.
The deeper/farther an object is from the transducer, the closer its return will appear to the
bottom of the window. The Distance Axis scale automatically adjusts to display the current
scanning range of the Ping device.
There is an orange arrow on the Distance Axis indicating the distance to the target in the
most recent measurement (this is the same as the Distance Readout).
Return Plot
The Return Plot displays the return strength vs distance of the most recent Profile sample.
The plot displays the measurement of only a single dependent variable (return strength), and
is simply mirrored for ease of viewing. Stronger returns appear as wider traces.
Note You may observe a very strong return at the top of the screen (at zero distance,
essentially touching the device); this return is from the Ping device itself. When the Ping
device emits the acoustic pulse, the device is still vibrating or 'ringing' like a bell when it
begins measuring the return signal. This residual energy in the vibrations of the Ping device
body is picked up as a return signal until it decays away.
Waterfall