Electro-Voice EVH-1152S 用户手册
Electro-Voice EVF/EVH User Manual
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6.0 Rigging-Strength Ratings and Safety Factors (cont’)
6.42 Left-to-Right Vertical Cluster Angles
The suspended vertical cluster must be perpendicular (plumb) to within ±5° as shown in Figure 30.
Figure 30:
Left-to-right angle limits for a vertical cluster (angle shown exaggerated for illustration purposes)