G90 Cat Setting for Station Master Pro

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Baud Rate: 19200
Stop Bits: 1 or 2 (2 is commonly cited for stability)
Data Bits: 8
Parity: None
Flow Control: RTS/CTS or None (ensure DTR/RTS are unchecked in some configurations)

The cat cable is the plug on the side of the G90 head unit not the plug on the back .