85Specifications1010 Specifications Horizontal FrequencyThe time required to scan a single line from the left to the right side of the screen is called ahorizontal cycle. The reciprocal number of a horizontal cycle is called horizontal frequency.Horizontal frequency is measured in kHz. Vertical FrequencyRepeating the same picture dozens of times per second allows you to view natural pictures.The repeat frequency is called "vertical frequency" or "refresh rate" and is indicated in Hz.