Measurement Software; Appropriate Car Radio Settings For Taking Readings - HELIX PP50DSP Operating Instructions Manual

"Rosa Rauschen.mp3" and copy them to the USB memory.
We recommend creating a CD of the test signal if possible.

Appropriate car radio settings for taking readings

To take readings it is important that your car radio is set up correctly. All sound controls should be
set to either "linear" or the central position. Deactivate any existing loudness functions. The balan-
ce and fade controllers must also be adjusted to the "central position".

Measurement software

For measuring the frequency responses, we recommend the Praxis measurement software from
Liberty Instruments. This is free to download from www.libinst.com/praxis_downloads.htm
The software offers a considerably greater range of functions than is necessary for measuring fre-
quency responses. To simplify it, we have therefore created a configuration file which performs all
the necessary software settings so that you can get on with the measurements. This configuration
file is available on the Audiotec Fischer website under "PC-Tool", "Downloads". Download the "Pra-
xis Setup ATF.ini" file and save it preferably in the same directory where you previously installed
the "Praxis" software (usually under C:\Programs\Praxis\).
Also download the reference curve which you will use later to help you adjust the equalizer.
This is also available on the Audiotec Fischer website under "PC-Tool", "Downloads" ("Reference
frequency response curve Europe.px2"). This file must be saved in the same directory as the confi-
guration file.
Now install the configuration file by starting the "Praxis" measurement software as follows:
"Config" -> "Load Config File" -> "Software specific"
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