Acer AL1721h Service Manual page 14

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Panel Relative Humidity
Input Signals
Video input
Type
Input Impedance
Polarity Positive
Amplitude
Display Color
Sync input
Signal
Polarity
Interface frequency
The following frequency range is generalized by supported timing. If the entered mode does not
match the supported timing the display optimization will not be assured.
Horizontal Frequency
Vertical Frequency
Panel bright dot defect and dark dot defect
Test conditions:
1280*1024,64KHz/60Hz
R.G.B.Full White and Full Black Pattern
RECALL
1. Bright Dots: R.G or B dots ≤3dots (G dots <3dots)
2. Adjacent dot<1 groupTotal bright dots ≤ 3dots
3. Dark Dots: -R.G or B dots ≤5dots - 2 adjacent dot<2 group Total dark dots ≤5dots
4. Total(Dark & Bright) ≤7dots
Analog R, G, B.
75 ohm +/- 2%
0 - 0.7 +/- 0.05 Vp
same as LCD panel
separate horizontal and vertical sync, or composite sync
which are TTL compatible
positive and negative.
30KHz --80KHz
55Hz -------75Hz
13

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