2011-000002 datasheet(7/43 Pages) SAMSUNG

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2 Product Specifications

SyncMaster 770TFT

2-3

Video

Sync

Horizontal

Vertical

Video

Sync

Separate Sync

2-3 Timing Chart

This section of the service manual describes the timing that the computer industry recognizes as standard

for computer-generated video signals.

Video

Sync

Video

A : Line time total

B : Horizontal sync width

O : Frame time total

P : Vertical sync width

C : Back porch

D : Active time

Q : Back porch

R : Active time

E : Front porch

S : Front porch

VIDEO

Horizontal

Vertical

Green

Vertical

Horizontal

H/V Composite Sync

Sync-on-Green

79.976

12.504

1.067

1.837

9.481

0.119

75.025

13.329

0.038

0.475

12.804

0.013

135.000

Positive

Separate

81.129

16.640

6.400

2.880

3.200

76.106

10.660

0.080

3.200

0.020

135.000

Negative

Com.

68.677

14.561

1.016

2.201

10.836

0.508

84.997

11.765

0.044

0.524

11.183

0.015

94.500

Positive

Separate

1024/85Hz

1024x768

1280/76Hz

1280x1024

1280/75Hz

1280x1024

1024/75Hz

1024 x 768

60.023

16.660

1.219

2.235

13.003

0.203

75.029

13.328

0.050

0.466

12.795

0.017

78.750

Positive

Separate

31.469

31.777

3.813

1.589

26.058

0.318

70.087

14.268

0.064

0.858

13.155

0.191

28.322

Negative

Positive

Separate

fH (kHz)

A µsec

B µsec

C µsec

D µsec

E µsec

fV (Hz)

O msec

P msec

Q msec

R msec

S msec

Clock

Freq.

(MHz)

Polarity

H.Sync

V.Sync

Remark

IBM

640/75 Hz

640 x 480

640/85 Hz

640 x 480

800/75 Hz

800 x 600

800/85 Hz

800 x 600

1024/60Hz

1024 x 768

VGA2/

70 Hz

720 x 400

VGA3/

60 Hz

640 x 480

Table 2-1. Timing Chart

31.469

31.778

3.813

1.589

26.058

0.318

59.940

16.683

0.064

0.794

15.761

0.064

25.175

Negative

Separate

37.500

26.667

2.032

3.810

20.317

0.508

75.000

13.333

0.080

0.427

12.800

0.027

31.500

Negative

Separate

43.269

23.111

1.556

2.222

17.778

1.556

85.008

11.764

0.671

0.578

11.093

0.023

49.500

Negative

Separate

46.875

21.333

1.616

3.232

16.162

0.323

75.000

13.333

0.064

0.448

12.800

0.021

49.500

Positive

Separate

53.674

18.631

1.138

2.702

14.222

0.569

85.061

11.756

0.056

0.503

11.179

0.019

56.250

Positive

Separate

48.363

20.677

2.092

2.462

15.754

0.369

60.004

16.666

0.124

0.600

15.880

0.062

75.000

Negative

Separate

Mode

VESA

Timing

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