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Installation Manual

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Decode LED signal
The LED (PIN 10) pin of the E4000 provides a level cue signal when decoding is successful, and is typically used as an
input control signal for externally decoded LED cues. When the decoding is successful, the LED pin will output a high-level
pulse with a duration of approximately 300ms and eventually return to a low level. The LED signal output pin has a limited
load capacity and cannot directly drive the LED. A matching LED driver circuit is required.
Refer to the matching LED prompt drive circuit as shown below: