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Updated Main Controls (markdown)

Brumi-2021 2023-09-04 23:24:45 +02:00
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Main-Controls.md

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When a Frequency field is selected, the frequency can be updated in several ways: Turning the encoder dial will adjust the frequency by the Step size. A short press of the select button will bring up a screen where the frequency can be entered directly. A long press of the Select button allows enters a mode where individual digits may be adjusted using the dial (press Select again to exit this tuning mode).
## Step size
The step size when changing frequency can be changed as a secondary function when the frequency is selected. The range of settings are: 10M,1M,500k,250(N2),100k(FM2),50k(FM1),25k(EU NFM),12k5(EU NFM),10k(US AM),9k(EU AM),8.33k(AIR),6k3 (EU DIG),5k(SA AM),3k,1k, and 100Hz.
The step size when changing frequency can be changed as a secondary function when the frequency is selected. The range of settings are: 10M,1M,500k,250(N2),100k(FM2),50k(FM1),25k(EU NFM),12k5(EU NFM),10k(US AM),9k(EU AM),8.33k(AIR),6k3 (EU DIG),5k(SA AM),3k,1k,100Hz, 50Hz and 10Hz.
## Bandwidth
It is often the case that the PortaPack user does not know the filter bandwidth to use or what they have selected. The system uses: Finite Impulse Response (FIR) Filters and the settings are held in the dsp_fir_tap_hpp file, and are selected from the use interface. They can be selected for different modulation modes.