NEC MultiSync 20WGX2 Series, Service Manual

Page: 82 / 143

5-3 4
MODE MODE
No.
13 14
Item Abbreviation
VESA 1024
×
768 60Hz VESA 1024
×
768 70Hz
Pixel frequency fc
65.000MHz 75.000MHz
Horizontal frequency fh
48.36kHz 56.48kHz
Line Time total Th
20.68us 1344CLK 17.71us 1328CLK
Horizontal active display Thd
15.75us 1024CLK 13.65us 1024CLK
Horizontal sync pulse Thp
2.09us 136CLK 1.81us 136CLK
Horizontal back porch Thb
2.46us 160CLK 1.92us 144CLK
Horizontal front porch Thf
0.37us 24CLK 0.32us 24CLK
Horizontal sync polarity
NEG (/POS) NEG (/POS)
Vertical Frequency fv
60.00Hz 70.07Hz
Frame time total Tv
16.67ms 806H 14.27ms 806H
Vertical active display Tvd
15.88ms 768H 13.60ms 768H
Vertical sync pulse Tvp
0.12ms 6H 0.11ms 6H
Vertical back porch Tvb
0.60ms 29H 0.51ms 29H
Vertical front porch Tvf
0.06ms 3H 0.05ms 3H
Vertical sync polarity
NEG (/POS) NEG (/POS)
MODE MODE
No.
15 16
Item Abbreviation
VESA 1024 × 768 75Hz VESA 1152 × 864 75Hz
Pixel frequency fc
78.75MHz 108.00MHz
Horizontal frequency fh
60.02kHz 67.50kHz
Line Time total Th
16.66us 1312CLK 14.82us 1600CLK
Horizontal active display Thd
13.00us 1024CLK 10.67us 1152CLK
Horizontal sync pulse Thp
1.22us 96CLK 1.19us 128CLK
Horizontal back porch Thb
2.24us 176CLK 2.37us 256CLK
Horizontal front porch Thf
0.20us 16CLK 0.59us 64CLK
Horizontal sync polarity
POS (/NEG) POS (/NEG)
Vertical Frequency fv
75.03Hz 75.00Hz
Frame time total Tv
13.33ms 800H 13.33ms 900H
Vertical active display Tvd
12.80ms 768H 12.80ms 864H
Vertical sync pulse Tvp
0.05ms 3H 0.04ms 3H
Vertical back porch Tvb
0.47ms 28H 0.47ms 32H
Vertical front porch Tvf
0.02ms 1H 0.02ms 1H
Vertical sync polarity
POS (/NEG) POS (/NEG)