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ALLEN&HEATH iLive Reference Guide AP6526 iss.3 67
Signal Generator page Provides a comprehensive tone / noise
generator which can be used for checking and setting up the system. The
generator settings are restored on power up and stored in the system Show
memories. They are not stored in Scene memories.
Signal type Choose the generator signal source
type:
Sine Pure sine wave tone. Touch the Frequency
box and use the screen encoder to adjust the
frequency of the tone. You an sweep from 20Hz to
20kHz.
White Noise Noise with linear response, equal
energy per Hz.
Pink Noise Noise with logarithmic response. This
is a very useful test source as it contains the full
bandwidth of audio frequencies with equal energy
per octave. Use this to quickly check the response
of a signal path or drivers in a loudspeaker system.
Band Pass Noise This is limited bandwidth noise
with its centre frequency sweepable from 20Hz to
20kHz.
Level Touch the Level box and use the screen
encoder to adjust the output level of the generator
from fully off to +18dB maximum.
Mute Turns off the signal generator.
Mixes There is one button per mix available. The
mix type and its name is identified next to the
button. These route the generator to the Group,
Aux and Matrix mixes. Touch a button to toggle it
on (green) or off (grey). This routes the signal
generator to any combination of the mix outputs.
The signal is routed to mix bus and is therefore
affected by the mix master processing and fader.
Mains The buttons in the lower part of the screen
route the generator to the configured main mix.
There may be 1 to 4 buttons depending on the type
of main mix configured. The buttons are positioned
here to keep them away from the other mix buttons
and avoid accidental routing to the main PA.
Note: To avoid unexpected loud signals start
with the generator Level turned down. We
recommend that you turn the level down and turn
off all the generator mix assignments after you have
finished using the generator.