Expert Electronics SunSDR2 Pro, Руководство пользователя

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SunSDR2 PRO User Manual
© 2018 Expert Electronics
ExpertSDR2 SOFTWARE DESCRIPTION
Mic G ain and Compression set t ings:
1. Set the Meter to the Mic-meter mode in the Desktop style (right click on the S-Meter->TX->
Mic-meter).
2. Set the Drive level to 0.
3. Enable the TX mode and speak in the microphone.
4. Increase the Mic gain from 0 dB till the Mic meter readings will reach -10...-5 dB in peaks.
5. If required enable the compressor.
6. Set Compression to 2-5; set COMP threshold to ~ -30 dB. This level should be more than
room noises for about 10-15 dB.
-
enable the microphone signal processing menu (PROC). Profile adjustment in this
menu is similar to the global profile menu:
·
add a new profile, by entering the name of the profile in the “Profile name” field and pressing
Add button.
·
Update the settings of the certain profile from the list to the current settings.
·
Remove the certain profile from the list.
Note:
·
All new profiles will be stacked up to the drop-down menu as a new line.
It consists of the following functions:
DC block's purpose is to effectively remove Time
const ant in the microphone signal. Changing of Time const ant influence quality of the applied
filter. You can test it by increasing or decreasing Time const ant value in 1-10 ms range, you’ll
notice low frequencies reduction with 1 ms value and amplifying with 10 ms value.