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 2400‑115200, 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*3E The 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 * 61 The third serial port statement is the AIS statement ! AIVDM, 1, 1, 0, A, 16:FDnPP0087<LP = = n>U?gwl2588, 0*29 The 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 * 4A 2) 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 * 4A Interface Definition and Cable Definition 1) NMEA1-NMEA4 input is the same: A1-first way NMEA1 input A B1-NMEA1 input B First way A2-second way NMEA2 input A B2-second way NMEA2 input B A3-third way NMEA3 input A B3 - third line NMEA3 input B A4-fourth way NMEA4 input A B4-NMEA4 fourth line B input 2) OUT1 and OUT2 outputs are the same: A-nmea output A B-nmea output B 3) 24+-positive power supply 4) 24-negative power supply Package List: 1 x NMEA Digital Signal Synthesizer1 x Manual