How to Guide
Audio Loudness Monitoring
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www.tektronix.com\wfm8000
www.tektronix.com\wfm7100
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There are two types of charts available within the instrument. A trend chart (Figure 6) that
shows a graph of the loudness measurements for the last 90 or 180 seconds and a bar
chart that shows the maximum and minimum loudness value during each bar period and
can show the loudness variations from 7.5 minutes to 30 hours instrument (Figure 7).
Figure 6. Loudness Session – Trend Chart 90 Seconds.
