User manual

Audio Analyzer

AM700 Audio Measurement Set User Manual

4-67

Settling Detector Enable. Checking the Enable Settling Detector causes the Audio

Analyzer to use only settled data; leaving it unchecked permits the Audio Analyzer

to accept all measurement data from the DSP (digital signal processor).

NOTE. Unsettled data points, shown as unfilled circles in a plot, are not considered

valid data and are not saved in a history plot if History is enabled in Plot Control.

Settling Mode. You can define the settling curve by setting the mode to Exponential

or Flat. The Tolerance and Resolution curves are both affected by this selection. An

exponential settling curve applies an exponentially-shaped window (window height

is determined by the Tolerance or Resolution setting) backwards over time from the

last data sample (see Figure 4-28). Exponential is the recommended settling curve

selection for most applications, since most transient signals settle exponentially.

Last settled

data point

Tolerance

curve

% Variation

Samples

Level Min

Data value outside settling

tolerance and resolution

Timeout (used in Regulation and Closed-Loop modes)

Data values below minimum level are not used

Data value outside settling tolerance

but within the resolution setting

Resolution

Unsettled

data point

New settled

data point

Figure 4-28: Exponential settling in Audio Analyzer