Newport IPV, Руководство по установке

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3 Operation
3.1 Principles of Operation
The S-2000 Stabilizer™ Isolators provide one of the best methods of
vibration isolation for critical applications. The system operates on the
principle of air pistons, which are equivalent of soft springs. The main
advantage of the Newport system over other designs are low vertical resonant
frequency with low amplification at resonance (Q) and a Pendulum
TM
horizontal decoupling system for effective isolation from low amplitude
vibration.
Newport optical tables provide a working surface that is statically rigid with
high internal tuned damping for high dynamic rigidity and minimal response
to environmental disturbances.
The leveling valves provided with the system control the height of the table
to within ±0.01" (0.3mm) accuracy. This tolerance is adequate for most
applications. More accurate valves are available for specialized
applications.
3.2 Performance Adjustments
Once the system is assembled and the table floating, it is possible to make
minor adjustments to suit your individual needs. These adjustments involve
the system air pressure, the control arms, and needle valves.
WARNING
Once the table is floating, keep fingers away from the area
between the centering guide and outer clamp of the isolators.
Any object between these points may be caught if the table load
or air supply changes, causing personal injury.
1. Stabilizing high center-of-mass loads: If your load has a high center of
mass or if the load is particularly heavy, the table may oscillate. In this
case, lower the system pressure or close the needle valves slightly. This
may improve stability and reduce the oscillation or “hunting”.
2. A rule of thumb for determining high center of gravity (C-G) system
stability is shown in Figure 14. If the combined center of gravity of the
payload and table top is within the “stable region”, the system will be
stable. If the combined C-G is inside the “may be stable region”, the