Spectrum DSP M2 User Manual page 34

where a setting of 1 is unity. This is increased from unity to increase the amount of
ALC action (compression). See the section about the adjustment of the
ALC/Compressor. This setting will be displayed in RED and not adjustable unless
"TX Audio Compress" is set to "SV".
TX Audio Compress - This is the same as the "CMP" setting on the main screen and
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it adjusts the amount of compression of the transmitted audio signal. This parameter
dynamically adjusts both "ALC Release Time" and "TX PRE ALC Gain" to provide a
configuration that will result in a small amount of compression for low values or "heavy"
compression for high values. When set to "SV" (which would be setting "13") the "ALC
Release Time" and "TX PRE ALC Gain" parameters, above, are available for
adjustment to provide "custom" processor settings. The "ALC Release Time" and "TX
PRE ALC Gain" settings forced by this parameter are not saved to EEPROM and the
user-configurable settings in "SV" mode are preserved.
CW related items:
REMEMBER: When in the MENU mode, CW timing and speed will be disrupted!
Remember this when adjusting parameters such as CW speed and CW TX→RX delay!
CW Keyer Mode - This selects from Iambic-B, Iambic-A and Straight Key modes.
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CW Keyer Speed - This allows the adjustment of CW keyer speed, when in Iambic
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mode, from 5 to 48 words per minute. This is the same as the WPM item on the main
display screen. While you may adjust the CW speed while in menu mode, CW
timing and speed will be skewed until you exit menu mode!
CW Sidetone Gain - This adjusts the sidetone volume in CW mode as well as in the
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TUNE mode. This is the same as the STG item on the main display screen.
CW Side/Off Freq - This adjusts the CW sidetone and TX/RX offset frequency in 10
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Hz steps from 400 to 1000 Hz.
It should be noted that the CW transmit carrier frequency is always higher in
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frequency by this amount and it exactly matches the sidetone frequency which
is to say that if you match the pitch of the other station's receive signal with the
pitch of the sidetone, both with be transmitting on the same frequency.
When adjusting the sidetone, always take care to be sure that the center
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frequency 300 Hz and/or 500 Hz filter that you use matches the sidetone or else
the stations that reply to you may do so outside the filter's passband!
CW Paddle Reverse - This swaps the Dit and Dah position of the paddles.
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Note that if this is turned ON, the "ring" contact of the paddle jack is still the
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"PTT" line as before.
This has no effect when "CW Keyer Mode" is set to "Straight Key" mode.
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CW TX->RX Delay - This sets the Transmit-to-Receive turnaround time. Note: If you
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experience a problem with the CW key "hanging" occasionally during CW operation
(e.g. it goes "dead" for a second or two and then recovers) you may wish to increase
this time slightly. There may still be a lingering bug that may show up if the TX->RX
turnaround time is set too short, but it is believed that this has been fixed.
CW TX/RX Offset – This sets how the receiver offset and/or the frequency display
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operates in CW mode according to the following settings:
USB – The receiver operates in USB and the transmit frequency is above the
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displayed frequency by the amount of the configured sidetone frequency (e.g.
menu parameter "CW Side/Off Freq"). One must do some mental math to
Spectrum DSP M2 User Manual V1.1
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