Optoma EH319UST User manual - Page 11

Measuring projection surface flatness

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Measuring projection surface flatness  Criteria: overall surface flatness should have variance of less than 5mm.  Equipment: leveling instrument (1.2~1.5m) and thickness gauge. Split projection area into 16 segments equally as shown on chart below. Place leveling instrument on whiteboard. Insert the 5mm thickness gauge at point 1~9 positions following below order: Horizontal: - Measure point 1, 2 & 3. - Measure point 4, 5 & 6. - Measure point 7, 8 & 9. Vertical: - Measure point 1, 4 & 7. - Measure point 2, 5 & 8. - Measure point 3, 6 & 9. Point1 Point2 Point3 Point4 Point5 Point6 Point7 Point8 Point9 If a 5mm thickness gauge cannot be inserted between the whiteboard and the level then the whiteboard is not suitable for finger touch control. 11

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Measuring projection surface flatness
Criteria: overall surface flatness should have variance of less than 5mm.
Equipment: leveling instrument (1.2~1.5m) and thickness gauge.
Split projection area into 16 segments equally as shown on chart below. Place leveling instrument
on whiteboard.
Insert the 5mm thickness gauge at point 1~9 positions following below order:
Horizontal:
-
Measure point 1, 2 & 3.
-
Measure point 4, 5 & 6.
-
Measure point 7, 8 & 9.
Vertical:
-
Measure point 1, 4 & 7.
-
Measure point 2, 5 & 8.
-
Measure point 3, 6 & 9.
If a 5mm thickness gauge cannot be inserted between the whiteboard and the level then the
whiteboard is not suitable for finger touch control.
Point1
Point2
Point3
Point4
Point5
Point6
Point7
Point8
Point9