R1.1
Copyright © 2016 SDRplay Limited
10
SDRuno User Manual
2. Basics and Concepts
2.1 Application instance
SDRuno can run in multiple instances, each with a different input device. The default input device is the
SDRplay RSP but the input device can also be a soundcard (WME or ASIO), a pre-recorded IQ file or an
external SDR receiving hardware (as Perseus, SDR-14, QS1R etc.) via ExtIO dll interface. Each SDRuno
instance stores and recalls its own settings.
Please note: closing the instance #0 will close all the other instances as well.
2.2 Main window
The first time you run SDRuno only this window is shown. The main window is the control centre of a
SDRuno instance. Here you can open the VRX windows, enable/disable VRX, create and manage
workspaces, change the instance settings, select the input source and sample rate (where applicable),
open the recorder window etc. It can be closed or minimized to the task bar.
2.3 Virtual Receiver (VRX)
A VRX is a receiver implemented in software; each VRX takes the signal from the input device, processes
it and outputs the demodulated signal to an output device of your choice (currently only WME devices are
supported). For the RSP, SDRuno can create and run multiple VRX inside the same application instance.
When you run an instance of SDRuno
, one VRX is always created: it is the “master” VRX or VRX #0. VRX
#0 has some peculiarities:
-
can’t be disabled or deleted
-
it is the only VRX that can change the LO of the external hardware
-
it is (currently) the only working VRX when using the ASIO driver
A VRX includes four windows:
SP1
,
SP2
,
RX Control
&
RX EX Control
.
SP1
is the “main spectrum” window: it shows the spectrum of the signal from the input device. This
window is resizable and its settings are stored and recalled together with the relative VRX. Also it can be
closed or minimized to the task bar.
SP2
or “Aux spectrum” window: it shows the spectrum in the down-converted bandwidth.
Here you can modify the selectivity filter, place notches etc.
This window is resizable and its settings are stored and recalled together with the relative VRX.
Also it can be closed or minimized to the task bar.
RX Control
is the VRX control center: here you can set the VRX output device, frequency, receiving
mode and many more parameters. Its settings are stored and recalled together with the relative VRX and
it can be closed or minimized to the task bar.
RX EX Control
groups additional controls for the VRX that are (generally) less frequently used. The
purpose of this separation is to spare screen space when possible. Here you have access to all the
parameters relative to notches, noise blanker, noise reduction, soft filter, SNR and more. These settings
are stored and recalled together with the relative VRX and it can be closed or minimized to the task bar.
Note: Each VRX stores and recall its own settings.
