Timing Sequence; Power Up Timing Sequence - Newland FM515 Series User Manual

Timing Sequence

Power Up Timing Sequence

Before powering on the scanner, ensure that all the signals remain low to prevent current from flowing backwards to
1.
affect the performance of the scanner. Initialization will be completed within 1s if the scanner functions well after power-
on.
The initialization completes and the scanner can receive serial commands from the host.
2.
Before powering off the scanner, all the signals should drive low within 2ms. To ensure that the scanner works at a stable
3.
level, the minimum interval between removing and resupplying the power must exceed 2s.
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Figure 4-1