User`s manual

Table Of Contents
12.6 MEASURING LOUDSPEAKER SINGLE POLAR DATA (1D MODE)
We will use a PC controlled turntable under CLIO's control, and the automation
possible within the MLS control panel using the Autosave and naming rules.
Now suppose we want to measure and give a graphical representation of the polar
response of the same two ways loudspeaker analyzed in 12.4.
We need to measure its anechoic frequency response, at various angles and save
the files following the rules given in 12.5.1.
12.6.1 PREPARING AUTOSAVE AND THE MLS CONTROL PANEL
For this test we would like to measure the speaker from -180° to +180° (in
intervals of 5°) relative to its front baffle.
The MLS measurement should be set in a particular way in order to automatically
acquire the responses at various horizontal angles. To do this we will use the
autosave function, the loop mode and the link to the turntable control.
Let's start with setting the autosave function (see also 5.3). Pressing Alt-F2 we
recall the Autosave Setting dialog (fig.12.11); here we input the desired file name
('RogersHalfChirp'), start (-180) increment (5) and total (73) values.
Figure 12.11
The MLS menu is now ready to start taking measurements; we only need to
properly set the turntable and its control.
164 12 WATERFALL , DIRECTIVITY & 3D