Ascension laserBIRD, Installation And Operation Manual

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4: Software Operation: Tools for Successful Tracking
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CHANGE/EXAMINE ANGLE ALIGN
When PARAMETERnumber = 23 during EXAMINE, The Bird will return 3 words (6 bytes) of data
corresponding to the Azimuth, Elevation, and Roll angles used in the ANGLE ALIGN command.
This command differs from the ANGLE ALIGN command only in that it allows both reading and
writing of the angles. See ANGLE ALIGN for a full explanation of it use.
To CHANGE the angles send 6 bytes of PARAMETERdata after the 2 command bytes.
Note: The angles can only be read back with this command if they were previously written with
this command, i.e. if the ANGLE ALIGN was used to set the angles, then those angles will
not be accessible with the EXAMINE ANGLE ALIGN command.
CHANGE/EXAMINE REFERENCE FRAME
When PARAMETERnumber = 24 during EXAMINE, The Bird will return 3 words (6 bytes) of data
corresponding to the Azimuth, Elevation and Roll angles used in the REFERENCE FRAME
command.
See REFERENCE FRAME2 command for an explanation.
To CHANGE the angles send 6 bytes of PARAMETERdata after the 2 command bytes.
Note:
These angles are only accessible with this command if they were previously written with
this command.
BIRD SERIAL NUMBER
When PARAMETERnumber = 25 during EXAMINE, The Bird will return a 1 word (2 byte) value
corresponding to the Serial Number of the Scanner.
Note: This number cannot be changed.
DISABLE/ENABLE RUN TIME STATUS
Enabling the RUN TIME STATUS byte provides a method for notifying you of specific error
conditions encountered during operation. When the RUN TIME STATUS is enabled, all
subsequent Bird data requests will have a RUN TIME STATUS byte added to the end of the data
stream.
The bits in the RUN TIME STATUS byte are coded per the following:
BIT NUMBER MEANING
B7 0
B6 0 if the Motor speed and Measurement Data are valid
1 if the Motor speed or Measurement Data are invalid