YSI SonTek ADVField, Technical Documentation Manual

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SonTek/YSI
ADVField Software Manual (September 1, 2001) 39
9.3.2. Burst Data Block
Each “Burst Data Block” of the recorded data structure begins with a
Header Record
that con-
tains the date/time at the beginning of the burst as well as a few parameters that describe the data
contained in the block and the status of the ADV (built-in tests).
Following the
Header Record
, there are as many consecutive
Sample Records
as specified by the
SamplesPerBurst
command. If specified by the
RecordStat
command, an additional
Burst Sta-
tistics Data Record
is stored after the last sample record that contains the statistics for the burst.
•
Header Record (60 bytes)
•
Sample Record 1 (variable size depending on user-selected data recording options)
•
Sample Record 2
•
: : :
•
Sample Record <SamplesPerBurst>
•
Burst Statistics Data Record (36 bytes)
•
CTD Data Record
•
Checksum
See Appendix 2 in the
ADVField Operation Manual
for a complete description of the various
formats of the output data generated by the ADVField during autonomous data collection.
9.4. Sample Records and Recorded Data Types
Due to the large amounts of data that can be collected by the ADV, we have provided several op-
tions for the types of data that are recorded with each sample. This lets you record only the data
that are required, which can extend the maximum length of the deployment because deployments
are typically limited by storage capacity. The selection of which data are recorded is done by set-
ting the following command parameters.
•
RecordAmpCorr
– Records signal amplitude and correlation for each of the three beams with
each sample.
•
RecordCompass
– Records compass, pitch, and roll with each sample (only if the optional
compass/tilt module is installed).
•
RecordSensor
– Records temperature and pressure data with each sample (only if the op-
tional temperature or pressure sensors are installed).
•
RecordExtSensor
– Records data from up to two external sensors with each sample. The
data correspond to raw counts from a 12-bit AD converter.
•
RecordExtPress
– Records data from an external pressure sensor with each sample. Data are
stored as a 3-byte integer representing the compensated pressure reading in millidBar.
•
RecordStat
– Records a single record at the end of the burst with the means and standard
deviations of amplitudes, correlations, heading, pitch, roll, temperature, and pressure for the
burst.
•
RecordCTD
– Records a single record at the end of the burst with the mean temperature, con-
ductivity, pressure, and salinity measured by an external MicroCat CTD throughout the burst.
•
RecordLISST
– Records data from an optional LISST-100 sensor with each sample
See Appendix 2 in the
ADVField Operation Manual
for a complete description of the various
formats of the output data generated by the ADVField during autonomous data collection.