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APPENDIX 3 Digital Interface(IEC 61162-1 Edition 2)Input sentencesGLL, RMA, RMCSchematic diagramIEC1162 (NMEA)CHASSISRD-ARD-B12345678910J2W9P60912305P0653J9+12VR21U186C1 470 CR11000p3 41SS133R1 R47TLP121-GB4.7k 4.7k-12VLoad requirements as listnerIsolationInput impedanceMax. VoltageThresholdOptocoupler470 ohms± 15V4 mAAP3-1