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D027173_07 CR821X Dual Board Decoded Scan Engine Integration Guide
The S1 switch selects which voltage to run the engine and development
board on, 3.3V or 5V. The development board provides both 3.3V and 5V
regulators to provide a consistent power source to the engine.
The CR8211 will only run on 5V, while the CR8212 will run on either
3.3V or 5V.
The S3 switch turns the system on.
The S2 switch is used to select which current measurement path to use.
For normal operation, the switch must be set in either the left position
closest to the engine or the center position. See the next section for
performing power measurements on the engine.
9.2 – Power System
