Feature:1. Application: The NMEA digital signal synthesizer is applicable for 1 input series, replacement for LOWRANCE, replacement for RAYMARINE, replacement for GARMIN, for SIMRAD radar.2. Output: Each serial port input baud rate can be automatically selected 2400115200, the composite output signal baud rate defaults to 38400 (The output baud rate can be set to 115200).3. Function: NMEA digital signal synthesizer provides 4 serial port data input (NMEA0183 Protocol) and synthesizes into 2 serial port output (NMEA0183 Protocol).4. Practical: The NMEA Digital Signal Synthesizer is a valuable tool for the marine industry, enabling efficient testing, development, and troubleshooting of NMEA based marine electronic systems.5. Input Statement Format: The first serial port statement is a post statement, the second is a GPS statement, the third is the AIS statement, and the fourth is a log statement.Specification:Item Type: NMEA Digital Signal Synthesizer.Material: ABSFunction Overview:NMEA digital signal synthesizer (Model: HC-402) provides 4 serial port data input (NMEA0183 Protocol) and synthesizes into 2 serial port output (NMEA0183 Protocol), each serial port input baud rate can be automatically selected: 2400-115200 , the composite output signal baud rate defaults to 38400 (The output baud rate can be set to 115200).This product is suitable for: devices with only 1 input series, such as: LOWRANCE, RAYMARINE, GARMIN, SIMRAD radar, etc.e.g.:1) Input Statement Format:The first serial port statement is a post statement$HEHDM, 282.0, T*3EThe second serial port statement is a GPS statement.$ GPRMC, 090951, A, 2304.5504, N, 11325.8370, E, 000.0, 000.0, 120917, 002.6, W * 61The third serial port statement is the AIS statement! AIVDM, 1, 1, 0, A, 16:FDnPP0087<LP = = n>U?gwl2588, 0*29The fourth serial port statement is a log statement$HCVBW, 20.3, 1.5, A, 23.1, 1.2, A, 1.1, A, 1.5, A * 4A2) Output Statement Format:The output signal is output simultaneously in two ways, and the output statement is the sum of all sentences after synthesis, and the signal format conforms to the RS-422 standard and has a baud rate of 38400.$HEHDM, 282.0, T*3E$ GPRMC, 090951, A, 2304.5504, N, 11325.8370, E, 000.0, 000.0, 120917, 002.6, W * 61! AIVDM, 1, 1, 0, A, 16:FDnPP0087<LP = = n>U?gwl2588,0*29$HCVBW, 20.3, 1.5, A, 23.1, 1.2, A, 1.1, A, 1.5, A * 4AInterface Definition and Cable Definition1) NMEA1-NMEA4 input is the same:A1-first way NMEA1 input AB1-NMEA1 input B First wayA2-second way NMEA2 input AB2-second way NMEA2 input BA3-third way NMEA3 input AB3 - third line NMEA3 input BA4-fourth way NMEA4 input AB4-NMEA4 fourth line B input2) OUT1 and OUT2 outputs are the same:A-nmea output AB-nmea output B3) 24+-positive power supply4) 24-negative power supplyPackage List:1 xNMEA Digital Signal Synthesizer1 x Manual