Optical Performance Measure - Acer X1161 Service Manual

4-9 Optical Performance Measure

Inspection Condition
- Environment luminance: 2 Lux
- Product must be warmed up for 3 minutes
- Distances from the screen: 2.38 M
- Screen Size: 60 inches diagonal
1. Test equipment
Procedure
2. Brightness
Procedure
Criteria
- Adjust the volume to maximum by using the
remote controller.
- Check the sound from speaker.
- Check if the "mute" is normal.
- Connect VGA IN port of Projector with VGA port
of Chroma by VGA cable, press "Menu" button,
get into OSD mode, the settings are as below:
- "Display mode" is "Bright", "Brightness" is "50",
"Contrast" is "70", and the "Format" is "4:3".
- Full white pattern
- Use CL100 to measure brightness values of
P1~P9.
- Follow the brightness formula to calculate
brightness values.
☼ Brightness Formula
Avg. (P1~P9)*1.1m
● 1100 ANSI lumen
2
X1161/X1261 Confidential
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