Monitor Modes And Timing Capability; Osd Function (Abnormal Mode); Osd Control Factory Default Values; Factory Assigned Display Modes - Acer AL1716 Service Manual

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:
1.
2.
3.
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
V
H-sync frequency : F >=83KHz
H
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
1 102
VGA
2 103
MAC
3 182
VGA
4 173
VESA
5 109
VESA
6 104
VESA
7 116
VESA
8 117
VESA
9 110
MAC
10 108
VESA
11 118
VESA
12 157
VESA
13 141
MAC
14 203
15 339
16 394
WXGA 1440 x 900 75Hz
17 290
WXGA 1440 x 900 60Hz
18 289
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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FH Pixel Rate
(KHz) (MHz)
720 x 400 70Hz 31.47 28.322
640 x 480 60Hz 31.47 25.175
640 x 480 67Hz 35 30.24
640 x 480 72Hz 37.86 31.5
640 x 480 75Hz 37.5 31.5
800 x 600 56Hz 35.16 36
800 x 600 60Hz 37.88 40
800 x 600 72Hz 48.08 50
800 x 600 75Hz 46.88 49.5
832 x 624 75Hz 49.73 57.28
1024 x 768 60Hz 48.36 65
1024 x 768 70Hz 56.48 75
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
5
Sync Polarity
H V
- +
- -
- -
- -
- -
- -
+ +
- -
+ +
- -
- -
- -
+ +
- -
- +
- -
- +
- +