Spectrum DSP M2 User Manual page 17

Configurable options on the main touch screen:
In the upper left corner there are a number of items on the main screen that are configurable
using the buttons and/or encoders.
AFG - "AF Gain" (Volume Control). This is used to adjust the audio level feeding the
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speaker/headphone jack. Clicking the AFG box will select whether AFG or CMP are
adjusted (see below) with the "un-selected" item being "grayed" out. AFG is always
enabled when in Menu mode.
STG - "Sidetone Gain" while in CW mode. This is used to adjust the level of the
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sidetone that is heard during keying while in CW mode and while in TUNE mode by
swiping up/dwn after pressing the DSP button, on the left-side of the screen. Press the
AFG box to select whether this encoder adjusts STG or AFG with the "un-selected"
item being "grayed" out. Sidetone Gain is also adjustable from the main menu. When
not in CW mode this is replaced with "CMP".
CMP - "TX Compression Level" while not in CW mode. This is used to adjust the
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amount of audio compression when in voice mode. When in CW mode this is
replaced with "STG".
RFG - "RF Gain". This control, as the setting is decreased, causes an increased
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deflection in the S-Meter and a commensurate decrease in the receiver sensitivity.
This functions in exactly the same way as the "RF Gain" control on a traditional analog
receiver and is typically used to limit the receiver sensitivity on a noisy band. the AGC
box may be used to select whether this encoder adjusts RFG or NB (see below) with
the "un-selected" item being "grayed" out. This parameter may also be adjusted from
the main menu.
DSP – This adjust the "strength" of the DSP noise reduction, when enabled.
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Pressing-and-holding the AGC box will select between this parameter or "NB" (Noise
Blanker adjust) being visible. Turning the DSP on and off will also reset the DSP noise
reduction/notch engine.
NB - "Noise Blanker". This control adjusts the "strength" of the noise blanker, with "0"
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being "disabled." This is a "pulse" type noise blanker operating on the wideband input
prior to filtering in the DSP input. As the noise blanker strength is increased, the color
of the number changes to warn the user that the higher numbers are more likely to
cause degradation of the receive audio. the AGC box may be used to select whether
this encoder adjusts NB or RFG with the "un-selected" item being "grayed" out.
Pressing-and-holding the AGC box will select between this parameter or "DSP" being
visible.
RIT - "Receive Incremental Tuning". This offsets the receiver, in 20 Hz steps, to allow
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the transmit frequency to be different from that of the receiver with the actual receive
frequency being shown on the "sub" frequency display above and to the right of the
main frequency display. Button M3 may be used to select whether this encoder
adjusts RIT or WPM (see below) with the "un-selected" item being "grayed" out.
Spectrum DSP M2 User Manual V1.1
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