LN100
The LN100 data system is used to record aircraft attitude data.
The system is comprised of:
- a Litton LN100G,
- a Sun Blade 100 with Solaris 8,
- a Condor PCI-1553-M board, MIL-STD-1553B multi-function.
The "buscontrol" program is run on the Sun Blade 10 computer. It
initializes the LN100 and then requests the desired 1553 messages.
"buscontrol" then listens to the 1553 interface and records the raw
messages into ~100MB files.
"buscontrol" looks for the file "Frames" in the current directory.
That contains the list of messages to request according to the desired
rate. For example, if the file contained:
1 2 6 20 26 27 16
26 16
26 16
26 16
26 16
26 16
26 16
26 16
The messages 26 and 16 would have a data rate 8 times faster than
1, 2, 6, 20, and 27.
The program "memrdr" is used to monitor the status of the LN100.
"buscontrol" writes the current LN100 status information to shared memory,
"memrdr" reads and displays that information. It requires a very long
terminal window to display everything properly.
"ins_out" processes the files saved by "buscontrol" and creates separate
files for each message type in a format suitable for "fv". It can also
output a single file where each record has the primary information across
all the messages that we are interested. See mux.c for which fields are
output.