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Serial Interface Specifications
vvvv ...............VOR station identifier. Note that if the station identifier is less than four
mk ..................Frequency: m = MHz, where m = desired MHz frequency – 30h, with the
Example message:
$PMRRV20UBG<Sp>E@<chksm><CR><LF>
VOR station identifier is "UBG ", VOR frequency is 117.400 MHz.
Remote VOR List Trailer
This 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 Identifier
Example message:
$PMRRV21<chksm><CR><LF>
Indicates the start of a remote VOR list.
R
L
EMOTE
OCALIZER
The following two commands work together in allowing remotely connected devices to
provide a list of localizer frequencies associated with an airport to the SL30. The remote
device should first send the Remote Localizer List Header command (message identifier 22),
followed by a sequence of Remote Localizer Input commands (message identifier 23). The
SL30 maintains a single remote localizer list, so each new list received will replace any
previous list. Subsequent receptions of localizer lists for the same airport are ignored. There
may be up to twenty entries in the remote Localizer list. Any entries past twenty will be
ignored.
Remote Localizer List Header
This input command marks the beginning of a Localizer list sent by a remote device. It
specifies the five character airport identifier associated with the localizer frequencies in the
list.
Message format:
"V".................Message Class. This is a VHF NAV message.
52
characters, then the trailing characters will be filled with spaces. Station
Identifiers are restricted to using ASCII characters 0-9 and A-Z.
desired frequency ranging from 108 to 117, or 3Ch to 45h; k = kHz, where
k = (desired kHz offset / 25 kHz) + 30h, with desired frequency range of
000 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 valid
VOR frequency. Frequencies used for localizers, which are in the range of
108.10 to 111.95 MHz, will not be accepted in this message type.
L
IST
Apollo SL50 / SL60 Installation Manual
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