NEC MultiSync FP1350 Service Manual page 63

4-7. Horizontal W-wave Distortion Adjustment
1) Open Menu (S), TAG3 " SIDE WING ".
Adjust "+", "-" SW so that the side vertical line is about straight. (maximum ± 0.5 mm)
Center line
4-8. Vertical S-wave Distortion Adjustment
1) Open Menu (S), TAG3 "S.WAVE".
Adjust "+", "-" SW so that the side vertical line is about straight. (maximum ± 0.5 mm)
Center line
If Trapezoid Distortion is out of specification, repeat adjustment step 4-5.
It implements this adjustment in case of the following Undulation distortion.
Undulation is a directional difference of tilt at AB and DE.
Following figures (I) and (II) are example.
Fig 4-7 Horizontal W-wave Distortion
Fig 4-8 Vertical S-wave Distortion
A
B
C
D
E
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Fig 4-9 Vertical S-wave Distortion Definition
5-22
Signal: No. 33 (788*1200@75Hz) All white
Signal: No. 33 (788*1200@75Hz) All white
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