3M DL, SE user manual Measurement screens, Bar Chart and Filtered Bar Chart, Bar Chart View

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Measurement screens

Bar Chart and Filtered Bar Chart

Measurement screens

Bar Chart and Filtered Bar Chart

The first screen you’ll see in a viewing area contains a bar chart for broadband or filtered measurements.

For the bar chart screen, the amplitude of the displayed measurement is shown both graphically by the length of the bar and numerically below the bar. The bar appears (and usually fluctuates) if the measured value is above the minimum value for the selected measurement range.

For the filtered bar chart screen, the dominant characteristic of this screen is the multi-element bar chart. The chart shows measurements in each filter band and broadband values for both meters. That means that for octave analysis the screen contains 13 bars (11 for filters and 2 for broadband), and for third-octave analysis the screen contains 35 bars (33 for filters and 2 for broadband). A bars appears (and usually fluctuate) if the measured value for the bar is above the minimum value for the selected measurement range.

Amplitude in the band

Selected band

Broadband amplitude

Bar Chart View

Shows SPL average value of Meter 1.

•Will display only if SLM is selected as the measurement mode.

Softkeys (menus options)

Broadband Bar Chart view

Shows SPL average amplitude (or value) of Meter 1

•Will display only if octave band is enabled

Softkeys (menus options)

Figure 5-9: Bar Chart screen and Filtered Bar Chart screen

Models SE and DL