Chapter 11
Mode l8500C/8500C+ Operators Manual
11-1
11.
Model 8520C Signal Selector
The Model8500C/C+ Balancer/Analyzer’s companion unit is the Model8520C Signal Selector. The
Signal Selector receives the incoming signals from the sensors and relays them to the 8500C/C+ in
way the 8500C/C+ can understand. C hapter11 explains the Signal Selector and its operation, under th
following topics:
Section 11.1 Signal Selector: Introduction..........................................................................11-1
Section 11.2 Signal Selector Operation...............................................................................11-2
Section 11.3 Channel Selection............................................................................................11-4
11.1 Signal Selector: Introduction
The Signal Selector is an intelligent, microprocessor-based multiplexer that simultaneously collects
incoming vibration and pickup signals from multiple sources, then sends the 8500C/C+ the selected
signals for analysis. Up to six velocimeter and two magnetic pickup or Photocell System inputs may be
connected to the Signal Selector, which in turn outputs to the host any pair of vibration and pickup
signals chosen by the user. Velocimeter signals may be read directly from a single channel, or
optionally combined with the velocimeter signal from a second channel.
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