d&b audiotechnik SL Series, Руководство по монтажу

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Hoisting, aiming and securing the array
12.2.2 Vertical aiming
In connection with the Z5711 ArraySight sender unit (laser
inclinometer), the vertical aiming of the array can be sufficiently
and easily adjusted.
CAUTION!
Potential risk of personal injury.
The high brightness laser of the d&b ArraySight sender unit
requires additional safety considerations.
1. Take precautions to prevent anyone from looking directly
into the laser beam.
2. Wear appropriate eye protection.
3. When making adjustments to the array with motor hoists,
watch the hoist - not the meter unit!
4. Check the measurement only when you are satisfied that the
hoist has finished moving safely.
5. However, the chain hoist motors must raise slowly and
evenly.
Application example
To take an example: ArrayCalc indicates a frame angle of –3.6°
from vertical.
1. Using ArraySight to measure this angle, you raise the first
array to its operating height and then check the meter unit
screen.
2. The figures displayed settle as the meter compensates for the
swing of the array. If the settled display shows +0.5°, you
then use the hoists to lift the rear or lower the front of the
array. Make small adjustments and allow the meter unit to
calculate the new angle. Continue to make adjustments until
you achieve the angle of –3.6°.
3. Once the first array is complete, disconnect the meter unit from
the first sender unit and reconnect it to the sender unit of the
second array.
4. Repeat the procedure, starting with resetting the angle to zero
for the second sender unit. Raise the second array, check the
angle and adjust the angle as necessary.
5. If subsequent re-adjustment of the first array is required the
meter unit can be re-connected to the first sender unit and the
correct offset will be recalled.
12.3 Securing the array
When the array is in its final operating position, the secondary
safety must be applied to its dedicated suspension point. Please
also refer to
Þ
Chapter 3.14 "Secondary safety" on page 31 .
d&b SL-Series Rigging manual 1.10 en 73