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Display Mode Horizontal
Frequency
(kHz)
Vertical Fre-
quency (Hz)
Pixel Clock
(MHz)
Sync Polarity
(H/V)
IBM, 720 x 400 31.469 70.087 28.322 -/+
MAC, 640 x 480 35.000 66.667 30.240 -/-
MAC, 832 x 624 49.726 74.551 57.284 -/-
VESA, 640 x 480 37.861 72.809 31.500 -/-
VESA, 640 x 480 37.500 75.000 31.500 -/-
VESA, 800 x 600 35.156 56.250 36.000 +/+
VESA, 800 x 600 37.879 60.317 40.000 +/+
VESA, 800 x 600 48.077 72.188 50.000 +/+
VESA, 800 x 600 46.875 75.000 49.500 +/+
VESA, 1024 x 768 48.363 60.004 65.000 -/-
VESA, 1024 x 768 56.476 70.069 75.000 -/-
VESA, 1024 x 768 60.023 75.029 78.750 +/+
VESA, 1360 x 768 47.712 60.015 85.500 +/+
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 Hor-
izontal 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
General
General
Model Name
SyncMaster LD220
LCD Panel
Size 21.5 inch (54 cm)
Display area 476.64 mm (H) x 268.11 mm (V)
Pixel Pitch 0.248 mm (H) x 0.248 mm (V)
Synchronization
Horizontal
30 ~ 75 kHz
Vertical 56 ~ 61 Hz
Display Color
16.7 M
Specifications