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Noise Effects on Signals

From Encoder Products Company

Electrical noise generated by AC power, electric motors, fluorescent lighting, relays, and
many other sources can cause a plethora of problems in electrical systems. For the encoder
in your system these problems can range from simple miscounting to a complete servo
system lockup.
Electrical noise typically enters a system as one of two types - radiated and conducted.
Radiated noise propagates through the air while conducted noise finds an electrical path
onto the encoder cables from ground loops, power supplies or other equipment connected
to the system.

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Products & Services
Incremental Rotary Encoders
Incremental rotary encoders are multi-turn sensors that use optical, mechanical, or magnetic index-counting for angular measurement. They contain no absolute reference, but instead count relative to the turn-on position.
Linear Encoders
Linear encoders sense and digitize linear position change for positional measurement and feedback to control systems.
Absolute Rotary Encoders
Absolute rotary encoders use optical, mechanical, or magnetic indexing for angular measurement. They do not lose their position after power-down, but instead provide absolute position upon power-up without requiring a home cycle or any shaft rotation.
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Low-capacitance data cables in 100,500 & 1000 foot lengths are designed for RS422/RS232 & RS485 industrial communications . 24 AWG tinned copper conductors are twisted pairs to reduce noise... (read more)
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