Encoder difference and collector difference
What is the difference between encoder difference and collector? The output signal of the encoder can be connected in two different ways: differential and collector. Encoders with differential outputs have two output signals, usually labeled A and B. The two signals are sine and cosine waveforms of a 180 degree phase difference. An encoder with A collector output has only one output signal, labeled A, while the B signal is implied in the A signal by a level opposite to that of A.
The main difference between differential output and collector output is signal quality and signal length. Differential output signals are of higher quality because they are based on two phase difference signals and therefore have better anti-jamming ability over long distances. In addition, by using two signals, the resolution of the differential encoder can reach very high levels. Encoders with collector outputs are generally reliable over short distances, but the signal quality is poor and an external filter may be required to eliminate interference.
In practice, the choice of differential output or collector output depends on the specific requirements of the system. If high resolution, long distance transmission, or stability in high interference environments are required, then differential output is a better choice. However, if the application scenario is simple, such as using an encoder to measure position or speed over a short distance, then the collector output can be satisfied.
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