User manual

138
Audio Analyzer
PostNotch Listening
The main frequency component is filtered out
by a notch filter, leaving only the remaining sig-
nal audible.
Press the speaker button •
to display the vol-
ume window.
Additionally press enter •
 The post notch listening with auto-gain
function is activated. The maximum gain
setting is 0 dB.
e.g. using a 100 Hz sine test signal connected
to the XL2 input, with the 100 Hz main fre-
quency filtered by the notch filter, the complete
frequency spectrum is available at the speaker
or headphone output. This feature allows you to
listen to the actual distortion signal. You there-
fore hear a noise from the speaker even without
any connected inputs signal!
Oscilloscope
The scope function visualizes the waveform of the electrical in-
put signal. It automatically triggers to the fundamental frequen-
cy and selects the scaling of the X-axis (time) and Y-axis (level)
accordingly. The fundamental, or most dominant, frequency of
the input signals is displayed above the scope screen.
The scope scaling is fixed.