diff --git a/plugins/channelrx/demodatv/readme.md b/plugins/channelrx/demodatv/readme.md index 50f2342b2..4fd393d62 100644 --- a/plugins/channelrx/demodatv/readme.md +++ b/plugins/channelrx/demodatv/readme.md @@ -273,9 +273,9 @@ The slider step is set to a sample period in order to ensure that the adjustment This is the length in time units of a horizontal or line synchronization pulse. The value appears on the right of the slider. Nominal value depends on the nominal line length as described above. The nominal pulse length is derived from the 4.7 μs pulse of a 625 lines standard system with a 64 μs line length. For example with a 405 lines × 20 FPS transmission that has a line length of ≈123.45 μs this is (4.7 / 64) × 123.45 ≈ 9.07 μs. In practice you will adjust it to a slightly smaller value to be able to synchronize. -Similarly to the line length slider the slider step is set to a sample period in order to ensure that the adjustment is done with the best possible precision. The middle position of the slider sets the nominal value and the slider step appears in the tooltip. +The slider sets a percentage if the nominal pulse length value as described above from 1 to 100%. Therefore it is always shorter than nominal. The ideal position is usually at 25~30% but you have to try the bet value for your own signal. -☞ You can move this control back and forth in case you have synchronizing issues as it can help the synchronization system to get back into pace. In practice the value should always be negative (shorter pulse than nominal). +This percentage appears in the tooltip.

C: Image