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The vibrometer can be operated in dry rooms under normal climate conditions
(refer to chapter 7). In particular the optical components in the sensor head
are sensitive to moisture, high temperatures, jolting and dirt. When the vibro-
meter is taken into operation after being stored somewhere cool, a sufficient
acclimatization period should be allowed for before switching it on. Avoid con-
densation on the optical components caused by a rapid change in tempera-
ture.
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Before taking the vibrometer into operation, please ensure that the supply
voltage set with the voltage selector corresponds with the local mains voltage.
Only replace defective fuses by fuses of the same kind and equal rating.
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The helium neon laser in the sensor head requires a certain period of time to
reach optimum stability. The vibrometer should thus be switched on 20 min-
utes before the first measurements are made to ensure that it is in thermal
equilibrium with the surroundings.
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The sensor head OFV-303 should not be positioned provisionally but mounted
properly on a stable tripod using the threads provided.
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The sensor head OFV-511/-512 is equipped with a transport safety mecha-
nism which always has to be activated before moving the sensor head (refer
to section 5.8).
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As a general rule the vibrometer must not be switched on until all cables are
connected. Make sure that all jacks are connected properly and firmly. Protect
the cables from mechanical damage and from high temperatures.
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The housing surfaces of the instrument can be cleaned with mild detergent
solutions. Organic solvents must not be used.
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Handle all optical components with great care. Dirt may only be removed very
carefully with a soft, dry cloth, an optics brush and bellow.
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It is very important to ensure that there is sufficient air circulation to keep the
controller and the sensor head cool. The air vents of the sensor head must
never be covered up and the back panel of the controller must be at least
50mm away from the wall.
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Opening up of the equipment without authorization is not necessary for its
operation and will invalidate the warranty.
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