3M DL Changing displayed measurement, Analysis type, time response and weighting, Selection Panel

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Measurement navigation

Using softkeys in measurement screens

softkeys, the menus are visible in Softkey Region (i.e., “Cal” for Calibration menu). If necessary, press the Alternate Functions key ( ) to toggle the contents of the Softkey Region.

Changing displayed measurement

You can change the displayed measurement in any viewing area at any time. There are five measurement options available: SPL (L_), average SPL (L_av or L_eq depending upon the exchange rate setting for the selected meter), peak SPL (L_Pk), maximum SPL (L_Mx) and minimum SPL (L_Mn). The labels comply with IEC/ISO notation (“IEC/ISO notation” on page 57), where the underline character represents the time response and frequency weighting settings for the selected meter.

Changing displayed measurement

1. If necessary, press	(Alternate Functions key) to show the softkey
labels.

2.Press the softkey to display the Selection Panel. The available measurements are arranged in a column, with the selected measurement marked.

Selection Panel

This appears when lookup softkey is pressed.

• The diamond symbol u indicates which measurement is selected. (L_eq). Press Enter key to confirm new selection.

Lookup softkey

Figure 5-7: Selecting measurements with Lookup softkey

3. Press to make a different selection.

4. With your selection marked, press or press to make the change effective.

NOTE: When viewing during broadband analysis, you can use the left/ right arrow keys to change measurements.

Analysis type, time response and weighting

If your instrument has a filtering option, you can change the analysis type. To change the analysis type, time response, and/or weighting, you must be in the View Current Studies screen or in the View Session screen. Also, the current session must be stopped (or “closed”). For more details on changing these

Models SE and DL