NTi Audio Digirator DR2 - Manual (Page 34)

Linear PCM Test Signals
34
White Noise
Characteristics and use
The White Noise test signal has a high spectral density, Gauss-
ian amplitude distribution and a nearly infinite period (> 100
years). White Noise is used for all measurements with FFT
analyzers or where a linear frequency scale is used, and has a
constant signal power per Hertz and a 20 kHz bandwidth.
Parameter
You can define the following parameters for this test signal:
Output level
Polarity
Characteristics and use
The saw-tooth test signal is ideally suited for checking the po-
larity of loudspeakers. The “Minilyzer ML1”, “Acoustilyzer AL1”
and “XL2“instruments from NTi Audio detect this signal and
use it to indicate polarity.
Parameter
You can define the following parameters for this test signal:
Output level
The frequency display is for information only.
The frequency cannot be adjusted.