Bourns-Rotary-Optical-Encoder-Bourns-ENA1J-B28-L00128L-This-rotary-optical-encoder-from-Bourns-is-a-self-contained-incremental-rotary-optical-device-that-produces-a-2-bit-quadrature-signal-output-that-is-suitable-for-digital-systems-that-require-both-magnitude-&-direction-of-adjustment-data-P-The-Device-converts-rotary-input-into-digital-output-signals-that-can-be-used-directly-without-the-need-for-analogue-to-digital-conversion-The-output-signals-are-90-deg-phase-shifted-square-wave