Samsung 220TN - Manual (Page 90)

VESA. 1024 x 768 60.023 75.029 78.750 +/+
VESA, 1280 x 768 60.289 74.893 102.250 -/+
VESA. 1280 x 960 60.000 60.000 108.000 +/+
VESA. 1280 x
1024
63.981 60.020 108.000 +/+
VESA. 1280 x
1024
79.976 75.025 135.000 +/+
VESA.1680 x 1050 64.674 59.883 119.000 +/-
Horizontal Frequency
The time to scan one line connecting the right edge to the left edge of the
screen horizontally is called Horizontal Cycle and the inverse number of
the Horizontal Cycle is called 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 Vertical Frequency or Refresh Rate. Unit : Hz