Trigger Circuit; Power On Led Circuit - Newland EM2037-V4 Integration Manual

Trigger Circuit

The circuit below is used to provide the engine with a signal to trigger a scan and decode session. The right part shows
internal trigger processing circuit on the decoder board and the left part shows external circuit that users may utilize in
actual application. The nTRIG signal is from PIN 12 of the 12-pin FPC connector.
Users can adjust the external circuit and its function as per actual needs, on condition that the external circuit matches the
internal circuit.
External Circuit

Power On LED Circuit

The circuit below is used to drive an external LED for indicating that the engine is powered on. The left part shows internal
Power On LED driver circuit on the decoder board and the right part shows external circuit that users may utilize in actual
application. The PWRDWN signal is from PIN 8 of the 12-pin FPC connector.
Users can adjust the external circuit and its function as per actual needs, on condition that the external circuit matches the
internal circuit.
Internal LED Driver Circuit
Internal Trigger Processing Circuit
Figure 4-8
External Circuit
Figure 4-9
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