II Morrow Inc. Apollo SL50 GPS Installation Manual

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II Morrow Inc. Apollo SL50 GPS Installation Manual Manual pdf 60 page image

Serial Interface Specifications52 Apollo SL50 / SL60 Installation Manualvvvv ...............VOR station identifier. Note that if the station identifier is less than fourcharacters, then the trailing characters will be filled with spaces. StationIdentifiers are restricted to using ASCII characters 0-9 and A-Z.mk ..................Frequency: m = MHz, where m = desired MHz frequency – 30h, with thedesired frequency ranging from 108 to 117, or 3Ch to 45h; k = kHz, wherek = (desired kHz offset / 25 kHz) + 30h, with desired frequency range of000 to 975 kHz in 50 kHz steps, or the even numbers from 30h to 56h.Note that the field will be checked to ensure that it is in range and a validVOR frequency. Frequencies used for localizers, which are in the range of108.10 to 111.95 MHz, will not be accepted in this message type.Example message:$PMRRV20UBGE@VOR station identifier is “UBG ”, VOR frequency is 117.400 MHz.Remote VOR List TrailerThis input command marks the end of a VOR list sent by a remote device.Message format:“V” Message Class. This is a VHF NAV message.“21” Message IdentifierExample message:$PMRRV21Indicates the start of a remote VOR list.REMOTE LOCALIZER LISTThe following two commands work together in allowing remotely connected devices toprovide a list of localizer frequencies associated with an airport to the SL30. The remotedevice should first send the Remote Localizer List Header command (message identifier 22),followed by a sequence of Remote Localizer Input commands (message identifier 23). TheSL30 maintains a single remote localizer list, so each new list received will replace anyprevious list. Subsequent receptions of localizer lists for the same airport are ignored. Theremay be up to twenty entries in the remote Localizer list. Any entries past twenty will beignored.Remote Localizer List HeaderThis input command marks the beginning of a Localizer list sent by a remote device. Itspecifies the five character airport identifier associated with the localizer frequencies in thelist.Message format:“V”.................Message Class. This is a VHF NAV message.

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