To add a math channel, just click select
MATH in the modules and you will see the Math configuration panel. You can quickly select one of the built-in functions, such as inversion or addition. All the standard arithmetic functions are supported along with more complex functions like demodulation and instant frequency of the signal.
With HScope currently you have available only 1 math channel.
|Basic functions:||- A (invert)|
A + B (sum)
A - B (difference)
A x B (multiply)
A : B (divide)
|Advanced functions:||demod (demodulation)|
freq (instant frequency)
For some signals (for example from vibrations sensors), the information is carried by the amplitude (or envelope) of the signal. The
demod() function allow to do this operation. Following is the equivalent circuit of this operation.
Visualize the instant frequency variation of the signal along time. The
freq() function is useful for signal where frequency variation bring the useful information.
Sample application of this function to detect missfire with Automotive Module (detected 1 missfire event during long period recording):