Samsung LS27EMDKU/XE manual Resolution Scan Verticalfrequency Input Source, Horizontal Frequency

RESOLUTION	SCAN	VERTICALFREQUENCY	INPUT SOURCE
		(HZ)
720 x 240	Progressive	60Hz	Component
720 x 480	Interlaced	60Hz	Component, HDMI
720 x 480	Progressive	60Hz	Component, HDMI
720 x 576	Interlaced	50Hz	Component, HDMI
1440 x 480	Progressive	50Hz	Component, HDMI
1440 x 576	Interlaced	60Hz	HDMI
1280 x 720	Interlaced	50Hz	HDMI
1280 x 720	Progressive	50Hz	Component, HDMI
1920 x 1080	Progressive	60Hz	Component, HDMI
1920 x 1080	Interlaced	50Hz	Component, HDMI
1920 x 1080	Interlaced	60Hz	Component, HDMI
1920 x 1080	Progressive	24Hz	Component, HDMI
1920 x 1080	Progressive	25Hz	Component, HDMI
1920 x 1080	Progressive	30Hz	Component, HDMI
1920 x 1080	Progressive	50Hz	Component, HDMI
1920 x 1080	Progressive	60Hz	Component, HDMI

Horizontal Frequency

The time taken to scan one line from the left-most position to the right-most position on the screen is called the horizontal cycle and the reciprocal of the horizontal cycle is called the horizontal frequency. The horizontal frequency is represented in kHz.

Vertical Frequency

A panel must display the same picture on the screen tens of times every second so that humans can see the picture. This frequency is called the vertical frequency. The vertical frequency is represented in Hz.

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