Samsung 205BW service manual Preset Timing Modes, Horizontal Frequency

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14 Reference Infomation

14-4 Preset Timing Modes

-If the signal transferred from the computer is the same as the following Preset Timing Modes, the screen will be adjusted automatically. However, if the signal differs, the screen may go blank while the power LED is on. Refer to the video card manual and adjust the screen as follows.

Table 1. Preset Timing

Display Mode

Horizontal

Vertical Frequency

Pixel Clock

Sync Polarity

Frequency

(Hz)

(MHz)

(H/V)

 

(kHz)

 

 

 

 

 

 

 

 

 

MAC, 640 x 480

35.000

66.667

30.240

-/-

 

 

 

 

 

MAC, 832 x 624

49.726

74.551

57.284

-/-

 

 

 

 

 

IBM, 640 x 350

31.469

70.086

25.175

+/-

 

 

 

 

 

IBM, 640 x 480

31.469

59.940

25.175

-/-

 

 

 

 

 

IBM, 720 x 400

31.469

70.087

28.322

-/+

 

 

 

 

 

VESA, 640 x 480

37.500

75.000

31.500

-/-

 

 

 

 

 

VESA, 640 x 480

37.861

72.809

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

46.875

75.000

49.500

+/+

 

 

 

 

 

VESA, 800 x 600

48.077

72.188

50.000

+/+

 

 

 

 

 

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, 1280 x 1024

63.981

60.020

108.00

+/+

 

 

 

 

 

VESA, 1280 x 1024

79,976

75,025

135,00

+/+

 

 

 

 

 

VESA, 1600 x 1200

75.000

60.000

162.00

+/+

 

 

 

 

 

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

14-6

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Contents SERVICEManual Trademarks CopyrightContents Front …………………………………………………………………………………………………………………………………… Page MagicBright button Adjust buttonsFront Menu buttonAuto button Power buttonRear Page Removing the base Using the StandMonitor Mounting interface pad Attaching a BaseMemo PCB Diagram Memo Disassembly Disassembly and ReassemblyReassembly Block description Circuit DescriptionsMicom Block operatingTechnical Terms Reference InfomationHorizontal Frequency ResolutionDot Pitch Vertical FrequencyConnecting the Monitor Sync Type Pin AssignmentsTiming Timing ChartMode Preset Timing Modes Vendor P/N Panel Description14-8 14-9 14-10 No Power TroubleshootingWaveforms No Video PC Analog Signal Waveforms No Video PC Digital Signal Waveforms DDC Edid Data Input Alignments and AdjustmentsAutomatic Color Adjustment Required EquipmentHow to Display Service Function OSD Service Function SpecFunction Action method Hidden Key listDDC Input MethodWindows Program After Replacing the Maing Board Execution Items after replacing the main boardMemo LS20HAWCSZ/EDC Parts List Electrical Parts ListHdcp Level Loc. No Code No Electrical Parts List C201 Micom BOX Memo Block Diagram Block Diagrams Wiring Diagram Memo Safety Precautions PrecautionsElectrostatically Sensitive Devices ESD Precautions Servicing PrecautionsInstallation Precautions Memo
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