This document introduces the use of Lowrance M56i S/MAP, including data cable connection and communication port setting.
This document serves as an addendum (Part No. 988-0152-051) to the main manual for the Lowrance M56i sonar/GPS unit. It details specific procedures for utilizing the unit's NMEA 0183 communications port, which allows data transmission to compatible marine electronic equipment like VHF radios with Digital Selective Calling (DSC). The text explains that while the unit functions similarly to the standard M56 model, this addendum covers unique wiring configurations and software settings required for external communication.
The yellow wire is used to transmit NMEA 0183 formatted data from the unit.
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