Countries
Ecuador
Mexico
Guatemala
Canada
Broadcasting SystemsPALPAL-B/G PAL-D/K PAL-I PAL-N PAL-M
Countries
Italy
Sweden
Germany
Norway
Spain
Israel
Denmark
Portugal
Netherlands
Austria
Singapore
Indonesia
Australia
China
North Korea
Rumania
Ireland
England
South Africa
Hongkong
Argentina
Uruguay
Paraguay
Brazil
Broadcasting SystemsSECAMSECAM-B SECAM-D SECAM-K1SECAM-L
Countries
Iran
Iraq
Saudi Arabia
Syria
Lebanon
Egypt
Russia
Hungary
Bulgaria
Poland
France
Horizontal Frequency
The time to scan one line connecting the right edge to the left edge of the
screen horizontally is called the Horizontal Cycle and the inverse number
of the Horizontal Cycle is called the Horizontal Frequency. Unit: kHz
Vertical Frequency
Like a fluorescent lamp, the screen has to repeat the same image many
times per second to display an image to the user. The frequency of this
repetition is called the Vertical Frequency or Refresh Rate. Unit: Hz
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