Expert Electronics SunSDR2 DX, Руководство пользователя

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SunSDR2 DX User Manual
© 2020 Expert Electronics
ExpertSDR2 SOFTWARE DESCRIPTION
Hang t ime – sets time (in ms) to keep the signal level the same, after the At t ack period is over
and before the Release period is initiated.
I nput Boost – preamplifying of the input signal before limiter processing.
Maximum Amplit ude - sets the signals maximum amplitude on the limiter output.
Parametric equalizer module with graphic display of the summed AFC (white line) and AFC of
each equalizer. Each equalizer has independent set of controls: the center or primary frequency
(FREQ), bandwidth (BW) and AFC level (boost or cut) – vertical slider. Press right mouse button
on any control element to set it to the default value. Thus, using the parametric equalizer you
can perform the finest tuning on any required frequency.
In this module, you can find 3 types of filters: Low Shelf (on the left), High Shelf (on the right),
Peaking or Bell (8 units in between). Their operation is similar to the filters described in the
Filt ers module.
AG C
module is responsible for keeping the constant volume level of the Mic signal. Max AG C value
might be adjusted by the Mic gain on the software front panel. If the Mic signal on the AG C
input is too weak, then you might need to increase the Mic gain. AG C has a delay period which
is adjusted by the At t ack, increasing the At t ack value will increase delay period.
Paramet ers:
At t ack – signal attenuation period, this value determines how fast AG C will decrease the
amplitude of the loud signal to the Maximum Amplit ude value.