Request InfoApplied Scientific Instrumentation Inc.ASI’s FW-1000 16-position filter wheel utilizes a closed-loop DC servomotor to provide high speed (less than 40 milliseconds between adjacent positions) and low vibration operation (<3 × 10-4 kg·m2/s maximum vibration torque impulse). The unit employs a high-resolution rotary encoder for positional feedback and utilizes nonvolatile flash memory to store programmable filter sequences and delays. 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