AOR AR-ALPHA, Руководство по эксплуатации

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Frequency and tuning (6)
This indicator always shows the current tuned frequency. If the operation mode is not set to “Center” (in
the “IF FILTER” section), the AR-Alpha frequency can be different; frequency shift in this case is made by
the software. The current frequency can be tuned using the mouse wheel while hovering with the pointer
on the desired frequency digit. Double clicking on the frequency indicator, a dialog window will appear,
allowing direct frequency input. Frequency can also be tuned dragging the main spectrum window
(clicking with the left mouse button and moving the mouse left/right while on the main spectrum window).
Main spectrum view Secondary spectrum view Frequency indicator
Mouse
drag If not in “Center” mode, the grey bar
can be dragged on the waveform.
Fine tuning can be done
dragging the waveform (a
red vertical line shows
current position).
No effect.
Double
click
In “Center” mode, the receiver will
tune to the requested frequency.
Otherwise, software frequency shift
will be used to tune the requested
frequency.
The software will tune to
the selected frequency. The direct frequency
input dialog will pop up.
Mouse
wheel
Currently tuned frequency will be
shifted
upwards or downwards
depending on wheel rotation direction
and value set in the “Wheel Step” box.
Filter width (highlighted as
a grey zone) will vary
symetrically.
Currently hovered
frequency digit changes
according to mouse
wheel rotation.
Waterfall controls (7)
On the right side of the software window, there are three sliders that control waterfall appearance. From
the top to bottom, the sliders control: waterfall speed, brightness and contrast. They can be operated by
dragging the slider or using the mouse wheel while hovering over the controls.
Span (8)
It's possible to select the desired frequency span by clicking on the arrow buttons in the Span field. The
smaller the span, the slower the main spectrum window will refresh.
FFT Resolution (9)
“Time”, “Mix” and “Freq” allow you to select the desired FFT characteristics, preferring update rate or FFT
spectral resolution.
Volume control (10)
“AF Vol” controls output volume. Clicking on the button, the output can be muted; the slider controls
volume output level. In “DRM” and “USER” mode there is no sound card output (all data is redirected to
the Virtual Audio Cable).
IF Filter (11)
The “IF Filter” section allows selecting the AR-Alpha I/Q output bandwidth. The “Center” button forces the
currently demodulated signal to be in the center of the main spectrum windows (and disables the software
frequency conversion block). If not selected, all viewable frequencies are tunable without changing the
AR-Alpha tuned frequency (through software frequency conversion).