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3.5 Module of Device
3.5.1
Input Source
Input signal has two options: external analog signals and the test
signal inside the equipment, including analog signal adjustable parameter is
as follows:
Sensitivity
: adjust the analog input; -60 ~ 0dBu, step by 3dB;
Mute
: select the channel mute;
Reverse phase
: will be 180 degree phase signal processing;
Phantom power supply
: used in capacitive microphone power supply,
input line or the capacitive microphone do not
open, in case of fire.
The test signal including sine, pink, white noise
signal, enabling the test signal system will
automatically block analog input signal.
3.5.2
Exp/Gate
The expander will add dynamic range to the input according to needs of the user.
When the signal input is less than “threshold”, the expander amplifies and outputs the signal input by the “ratio”
set. Level output = threshold – (threshold–level input)/ratio; when the signal input is more than “threshold”, it is
output by 1:1. Level output = level input, when the ratio is adjusted by the maximum
value
（
∞
）
, the expander becomes a noise gate.
Bypass
: the signal input is bypassed and the signal will go directly to the next
processing module. If it is pressed the expander will not be enabled; otherwise, the
expander will be enabled.
Ratio
: the dB of dynamically changed signal input of the expander/the dB of
dynamically changed signal output of the expander.
Attack time
: less than the time needed of the signal input of “threshold” of the expander from the entering
into the expanding status to output by the setting of expanding ratio.
Release time
: the time needed for the signal input returning to the original non-expanding status from the
expanding status.
All reset
: all parameters are reset to the factory settings.
