User Manual

WiNRADiO G3XX User’s Manual
Other Demodulator Settings
Amongst the last remaining demodulator settings are Mute audio on exit and
Show frequency in kHz, located at the bottom left of the demodulator Setup
panel.
As all critical demodulation functions are performed inside the on-board DSP,
the receiver can continue playing audio even when the application is closed,
as long as power is supplied to the board. Check the Mute audio on exit
checkbox if you wish for the audio to be muted when the application is closed.
This facility is available only on the internal (G3XXi) model; with the G3XXe
model, the audio cannot continue once the application is closed.
Show frequency in kHz applies to the frequency displayed next to the marker
in the demodulator real-time spectrum display. If this is unchecked, the
frequency will be displayed in MHz. This is independent from the main
frequency display, which is governed by the kHz and MHz buttons located
next to the main display.
The Secondary output can be applied to IF or audio signal. It is intended for
third-party applications that require access to the digitized IF or audio samples
for further signal decoding. The IF samples are passed at 48 kHz sampling
rate, two channels. Audio samples are passed at 16 kHz, one channel.
The Secondary output can be used to advantage by the optional WiNRADiO
Virtual Sound Card software, which makes it possible to pass the digitized
signals from the receiver directly to a third-party application without any
intervening re-digitization process and therefore without introducing any
additional distortion to the received signal. Alternatively, it is also possible to
use this feature to provide an output to a secondary (real) sound card.
41