Acer AL1716W Manual de servicio - Página 6

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1.5.7 OSD Function (Abnormal Mode)

No VGA Signal Menu

The function gives a warning when selected input signal is not

active. When the Monitor determines that the VGA is not input H/V

sync signal as the OFF¡ B suspend or standby model, or the V-sync

frequency is under 36.5Hz , the Monitor shall display a message,

No VGA Signal" for 3 seconds and the LED shall be green, to

alert the user that input signal is not active. After the message is

displayed about 3 seconds, the monitor shall go into sleep mode

and the LED shall be Amber. If the monitor is in Sleep mode,

pressing any OSD button shall cause the OSD message to be

displayed for another 3 seconds.

Out of range Menu

This function gives warning about input resolution or refresh rate

that the monitor cannot display. An input signal which is outside the

normal range of operation defined in Section 3.2 and the input sync

signal frequency for the below condition shall cause the monitor to

display for 3 seconds the Out of Range" message, and the LED

shall be green:

Check VGA cable Menu

This function gives warning about the VGA cable not connection.

When the Monitor determines that the VGA is not connected, the

Monitor shall display a message, Check VGA Cable" for 3 seconds

and the LED shall be green, to alert the user that the video cable is

not be plugged into the CPU or a Monitor signal connector. The

monitor shall use a method of a pull-up resistor on a ground pin to

determine if the video cable is connected to the PC. If the monitor

is in Sleep mode, pressing any OSD button shall cause the OSD

message to be displayed for another 3 seconds.

1.5.8 OSD Control Factory Default Values: The OSD

controls shall have the following factory default

values:

A. Brightness=100(range 0 – 100)

B. Contrast=50(range 0 – 100)

C. Volume=90(range 0 – 100)

D. Color Temperature=Normal(sRGB)

E. Language= English

F. Horizontal OSD position=50(range 0 – 100)

G. Vertical OSD position=50(range 0 – 100)

H. OSD Timeout=30(range 5– 60)

I. Horizontal size: no default value

J. Fine: no default value

K. Left/Right: no default value

L. Down/up: no default value

1.6 Monitor Modes and Timing Capability:

1.6.1 Format and Timing

The monitor shall synchronize with any vertical

frequency from 56 to 76 Hz, and with any

horizontal frequency from 31 to 83 KHz. If the

input frequency is beyond the specified range, the

monitor shall display a warning screen indicating

that the input frequency is out of range. Under no

circumstances shall any combination of input

signals cause any damage to the monitor.

1. Product Specification (continued)

V-sync frequency : 36.5Hz<=Fv<=55

V-sync frequency : F

>=76Hz

H-sync frequency : F

>=83KHz

1.6.2 Factory Assigned Display Modes: There are 18

factory pre-set frequency video modes. These modes

have a factory pre-set for all characteristics affecting

front-of-screen performance. When the system is

powered-on, previously stored screen parameters for

a pre-defined mode will be recalled if the operating

mode is one of those stored in memory. If the

operating mode is not one of those stored in memory,

the monitor CPU will select the PRESET timing for a

mode that is the next lowest in horizontal scanning

frequency to the mode being currently used. The

screen parameters may be adjusted by the use of the

front bezel controls and then may be saved as a user

defined mode. The monitor shall include all the

preset video timings shown in the following page.

Preset Timing Chart

No Chroma Timing

Timing Modes, FV(Hz)

VGA

102

VGA

103

MAC

182

VGA

173

VESA

109

VESA

104

VESA

116

VESA

117

VESA

110

MAC

108

VESA

118

VESA

157

VESA

141

MAC

203

339

394

WXGA 1440 x 900 75Hz

290

WXGA 1440 x 900 60Hz

289

NOTE: (1) 76Hz<=FV: Monitor can display but does

not guarantee.

(2) FH>=85KHz, or Fv>=80Hz: Power Save

(OSD warning invalid mode).

1.6.3 Mode Recognition Pull-in:

The monitor shall recognize preset modes within a

range of +/- 1 KHz whichever is less for horizontal;

and within +/- 1Hz for vertical.

ACER AL1716W

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Pixel Rate

(KHz)

(MHz)

720 x 400 70Hz

31.47

28.322

640 x 480 60Hz

31.47

25.175

640 x 480 67Hz

30.24

640 x 480 72Hz

37.86

31.5

640 x 480 75Hz

37.5

31.5

800 x 600 56Hz

35.16

800 x 600 60Hz

37.88

800 x 600 72Hz

48.08

800 x 600 75Hz

46.88

49.5

832 x 624 75Hz

49.73

57.28

1024 x 768 60Hz

48.36

1024 x 768 70Hz

56.48

1024 x 768 75Hz

60.02

78.75

1152 x 870 75Hz

68.68

100

1280 x 720 60Hz

44.772

74.5

1280 x 800 75Hz

62.63

106.22

70.635

136.75

55.935

106.5

Sync Polarity