d&b D80 - Manual (Page 63)

10.8.3. LINEAR setup
In addition to the loudspeaker specific setups, a LINEAR setup is
also available allowing the D80 to be used as a linear power
amplifier.
Note: CUT in LINEAR setup:
–
Butterworth 2nd order (12 dB/oct.)
– Corner frequency: 110 Hz
– Amplifier gain @ 0 dB: 31 dB.
10.9. Frequency generator - Freq. gen.
Selecting «Freq. gen.» opens the corresponding subscreen.
Each amplifier channel is equipped with an independent signal
generator offering sine wave or pink noise signals.
The generator provides pure-spectral sine wave signals with high
frequency accuracy and free of harmonics.
The generator can be used to check the connected loudspeakers
or to identify room resonances, for example.
The generator is inserted in the signal path after the input section
and before the actual signal processing. The test tone will sum up
with any input signal present.
Note: As a precautionary measure, the frequency generator
is always set to Off after the device is powered on.
Off The frequency generator is switched off
(Bypass).
Sine/
Pink noise
To turn the frequency generator on, select
either «Sine» or «Pink noise», depending on
the desired signal.
Frequency The frequency is adjustable from 10 Hz to
20 kHz.
On the top right of the «Frequency/FRQ» input
field, the increment is displayed as an octave
value. When you tap the field for the first time,
the frequency increment is set to 1/6 octave.
When you tap the field again, you can toggle
between 1/6 and 1/96 octave increments.
To confirm the set frequency, press the
encoder.
d&b D80 Manual 1.9 en 63