Scope Display - Spectrum DSP M2 User Manual

Spectrum DSP M2 User Manual V1.1

Scope display

Figure 5 shows an alternate
method of displaying signals
near the currently-tuned
receiver signal. This is the
Scope Display.
By default the scope display
shows all RF levels across the
spectrum, but making a long-
press on [SNAP/Bl] the
spectrum can be balanced to
show more defined signal
peaks. This is best done either
with the antenna grounded or
disconnected, on a quite area
of the band, or fast tuning the Figure 5: The unzoomed scope display showing +/- 96 kHz
(192 kHz) of a band segment. Zooming to 3KHz is permitted.
transceiver while balancing,
which takes a few seconds to
complete.
Displaying both Spectrum and Waterfall:
Click the header area shown in light blue on the far left-side, to the left of "Dual(19..)". This
will cycles through the available display modes-
Options available to both the Spectrum Scope & Waterfall
Display:
An adjustable "smoothing" filter (menu item "Scope/Wfall Filter") is available that dramatically
improves the visibility of rapidly-changing signals In the menu system, the range of the
Spectrum Scope may be set to span either +/- 96 kHz or +/- 3 kHz, with the scope's AGC
operating only on signals within the displayed span – see the menu setting "Spectrum
magnify" for more information.
Also available are "Window function" selections that operate on the input FFT data to both the
Spectrum Scope and the Waterfall Display that pre-process the spectral data to minimize
"spill-over" of adjacent FFT "bins". What this can do is make the Spectrum Scope and
Waterfall display look "sharper" and prevent a strong signal from "leaking" over and covering a
weak one.
Connectors:
On the right-hand side of the transceiver on the UI board are four 3.5mm three-conductor
connectors. Starting from the top, these connectors are:
Headphones. This is the receive audio output. It will work with headphones earbuds
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