Israel

Denmark

Portugal

Netherlands

Countries Austria

Singapore

Indonesia

Australia

Broadcasting

Systems

SECAM-B

Iran

Iraq

Saudi arabia

CountriesSyria Lebanon

Egypt

 

England

 

 

 

South Africa

 

 

China

Hongkong

Argentina

 

 

 

 

Uruguay

 

North Korea

 

Brazil

 

Paraguay

Rumania

 

 

 

 

 

SECAM

SECAM-D SECAM-K1SECAM-L

Russia

HungaryFrance

Bulgaria

Poland

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