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correction of spelling of units

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This commit is contained in:
Michał Borsuk 2022-01-26 18:06:01 +01:00
parent 0da0431e5e
commit 0d5af740a5
4 changed files with 28 additions and 28 deletions
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12
firmware/application/apps/capture_app.cpp
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@ -75,8 +75,8 @@ CaptureAppView::CaptureAppView(NavigationView& nav) {
option_bandwidth.on_change = [this](size_t, uint32_t base_rate) {
sampling_rate = 8 * base_rate; // Decimation by 8 done on baseband side
/* base_rate is used for FFT calculation and display LCD, and also in recording writing SD Card rate. */
/* ex. sampling_rate values, 4Mhz, when recording 500 khz (BW) and fs 8 Mhz , when selected 1 Mhz BW ...*/
/* ex. recording 500khz BW to .C16 file, base_rate clock 500khz x2(I,Q) x 2 bytes (int signed) =2MB/sec rate SD Card */
/* ex. sampling_rate values, 4Mhz, when recording 500 kHz (BW) and fs 8 Mhz , when selected 1 Mhz BW ...*/
/* ex. recording 500kHz BW to .C16 file, base_rate clock 500kHz x2(I,Q) x 2 bytes (int signed) =2MB/sec rate SD Card */
waterfall.on_hide();
record_view.set_sampling_rate(sampling_rate);
@ -85,12 +85,12 @@ CaptureAppView::CaptureAppView(NavigationView& nav) {
switch(sampling_rate) { // we use the var fs (sampling_rate) , to set up BPF aprox < fs_max/2 by Nyquist theorem.
case 0 ... 2000000: // BW Captured range (0 <= 250Khz max ) fs = 8 x 250 Khz
case 0 ... 2000000: // BW Captured range (0 <= 250kHz max ) fs = 8 x 250 kHz
anti_alias_baseband_bandwidth_filter = 1750000; // Minimum BPF MAX2837 for all those lower BW options.
break;
case 4000000 ... 6000000: // BW capture range (500k ... 750Khz max ) fs_max = 8 x 750Khz = 6Mhz
// BW 500k ... 750khz , ex. 500khz (fs = 8*BW = 4Mhz) , BW 600Khz (fs = 4,8Mhz) , BW 750 Khz (fs = 6Mhz)
case 4000000 ... 6000000: // BW capture range (500k ... 750kHz max ) fs_max = 8 x 750kHz = 6Mhz
// BW 500k ... 750kHz , ex. 500kHz (fs = 8*BW = 4Mhz) , BW 600kHz (fs = 4,8Mhz) , BW 750 kHz (fs = 6Mhz)
anti_alias_baseband_bandwidth_filter = 2500000; // in some IC MAX2837 appear 2250000 , but both works similar.
break;
@ -123,7 +123,7 @@ CaptureAppView::CaptureAppView(NavigationView& nav) {
waterfall.on_show();
};
option_bandwidth.set_selected_index(7); // 500k, Preselected starting default option 500khz
option_bandwidth.set_selected_index(7); // 500k, Preselected starting default option 500kHz
receiver_model.set_modulation(ReceiverModel::Mode::Capture);
receiver_model.enable();