50 Hz dot clock rates
- Main article: Dot clock rates
This table gives dot clock rate and pixel aspect ratio for several picture generators with the same 15.6 kHz by 50 Hz scan rate as PAL B/G. It assumes a 4:3 frame 52.068 microseconds wide by 288 scanlines tall.
Most picture generators' frequencies and pixel aspect ratios are much messier than the NTSC dot clock rates because of the large prime factor 64489 inherent in the definition of the PAL chroma subcarrier frequency from which many picture generators derive their dot clock.
|Frequency||Exact frequency||PAR||Exact PAR||Devices|
|5.3203425 MHz||2128137/400000 Hz||1.387:1||2950000:2128137||PAL NES, Dendy-style famiclones, and Super NES: 6 pixels per 5 subcarrier cycles (per nesdev:Cycle reference chart)|
|7.375 MHz||59/8 MHz||1:1||1:1||Square progressive pixels at 4:3|
|13.5 MHz||27/2 MHz||1.093:1 (i)||59:54 (i)||Rec. 601 non-square pixels|
|14.75 MHz||59/4 MHz||1:1 (i)||1:1 (i)||Square interlaced pixels at 4:3|