NMEA Checksum Calculator

UNIMAX NCC-22 NMEA Checksum

NMEA Checksum Calculator, calculates the checksum of NMEA sentences not including checksums and sends them to the output. In some older marine navigation devices, NMEA data is sent without calculating the checksum. New devices do not accept data without checksum.

NMEA Checksum Calculator, receives data at supported speeds from the isolated NMEA input. It checks whether there is a checksum in the incoming data. It will calculate and append the checksum to the output data. If a data without checksum is received, the checksum of that data is calculated and sent to the output. If a data with checksum is received, it is not processed and that data is directed to the output. Input and output can be adjusted independently according to the specified speeds.

NMEA Checksum Calculator
Tehcnical Specifications
Supply Voltage9-32VDC
Input1 X Galvanic isolated NMEA0183, IEC61162
Output1 X RS422, RS485
Input SpeedConfigurable with DIP Swithces 4800, 9600, 38400, 115200 bps
Output SpeedConfigurable with DIP Swithces 4800, 9600, 38400, 115200 bps
Case – DimensionsABS DIN Rail Mount Box 105 x 86 x 58