User manual

Audio Analyzer
4-42
AM700 Audio Measurement Set User Manual
Delay Time. Most devices that you might test with Regulation mode do not have
instantaneous response time, so you must specify a delay (the amount of time
between generator adjustment and first data-point acquisition). Setting a delay is
done in the Settled Data Point Detection Controls screen. (See the Settled Data
Point Detection Controls discussion on page 4-65.) The suggested minimum delay
value for use with Regulation mode measurements is 1.0 to 1.5 seconds.
Timeout. In certain instances a data point may never settle. The Timeout setting in
the Settled Data Point Detection screen tells the generator to go ahead to the next
point when settling does not occur within the time permitted. See Settled Data Point
Detection Controls on page 4-65.
NOTE. Settled measurement criteria are the same in both regulation and XY mode.
Frequency or level dropout on the input causes data points to be discarded. If the
frequency or level is not stable, the datum point is displayed as an unfilled point
(unsettled).
Linear or Log Spacing. Frequency spacing of the test points can be set to logarithmic
or linear by touching the Spacing soft key. A touch toggles between the two choices.
Running Regulation Mode. After setting up the target values, settling adjustments,
and making the external electrical connections to the device under test, Regulation
mode is ready for use. The Regulation mode measurement is controlled by soft keys
in the Plot Control menu (see Figure 4-17). Press the Menu front-panel button to
display the Audio Analyzer menu and touch the Plot Control soft key. This brings up
the Plot Control soft keys. Their operation is discussed in Controlling Plotted Data
on page 4-58.
NOTE. A Regulation mode sweep is not started by pressing the Sweep/Run button.
You must use the Start and Stop Regulation soft keys in the Plot Control menu to
control Regulation mode.