Installation Manual 10 Y1-03-0212 Rev. E3.4.5 DGPS – DGNSS Channel 9Field / Protocol information:All fields are provided with further information; please refer to ITU-R M.823-2 / RTCM SC 104for detailed field information.3.4.6 Alarm Circuit – BIIT Channel 10The AIS requires that an alarm output (relay) must be connected to an audible alarm deviceor the ships alarm system, if available.Alternatively, the BIIT (built-in integrity test) alarm system may use the alarm messagesoutput on the presentation port (ECDIS Port Channel 5), provided the ECDIS alarm system isconnected and AIS compatible.3.4.7 Proprietary SentencesThe proprietary ACR NMEA sentences have the NMEA registered manufacture talker ID“NAU”. The $PNAU sentences are an addition to the standard sentences and offer othermanufactures full remote control to the Transponder. The additional “Extended NMEAcommand set” – manual, which could be requested on demand, includes the full descriptionof how to use the proprietary NAUTICAST sentences.Proprietary NMEA-Sentences $PNAUMID - Mobile (MMS) IdASD - Advanced Ship DataRCS - Read Configuration SettingsSTO - Set Transponder OptionsTSI - Transponder State InformationSCR - Sensor Configuration RequestSCA - Sensor Configuration AcknowledgeSCD - Sensor Configuration DataSCM - Sensor Configuration ModeAIQ - Request status information from the TransponderIVD – Inland AIS voyage dataSPW- Inland AIS security password sentenceSPR- Inland AIS security password response