Spectrogram - Promax TV EXPLORER HD+ Manual De Instrucciones

5.16.2 Spectrogram.

The Spectrogram is a useful tool and it has been designed to detect problems in a
wide range of frequencies. These problems could appear at any time and sporadically.
The Spectrogram function makes a graphical representation of the frequency
signal level regards to the time. Each level is represented with a different colour, the
Y-axis belongs to frequency and the X-axis to time. Therefore a colour map is showed
on the display, see next figure.
Any frequency signal level could be displayed at any time reference using the
cursors or the variable knob. This tool is especially useful when a level signal analysis is
going to be processed during a long period of time. When the process is finished the
capture could be showed and any anomaly will be easily detected at any time.
To access the spectrogram, first press the button
analyser. Then you should set the parameters reference, span and frequency. Then
press [22] and select SPECTROGRAM using the cursors or the variable knob. The
figure below shows the initial screen.
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Figure 52.- Spectrogram.
USER'S MANUAL. TV EXPLORER HD+
[13] to access the spectrum
11/2013