Download SBE 11 plus deck unit

Glossary
SBE 11plus V2
Glossary
DATA HANDLING TERMS
To facilitate data handling, the SBE 9plus CTD and SBE 11plus V2 Deck Unit
cluster individual data bits into groups of various sizes. The following
definitions apply in this manual:
• Byte – Always 8 bits. May be serial (as generated in the CTD) or parallel
(Deck Unit’s IEEE-488 output).
• Character – Data byte encoded to ASCII standard.
• Channel – Path taken by data deriving from a single sensor (for
example, a temperature sensor) or other source (such as the modulo
counter).
• LSB – Least significant bit. Right-most bit in a byte. For example, if the
byte is 11111110, the LSB is 0 (in bold).
• MSB – Most significant bit. Left-most bit in a byte. For example, if the
byte is 10000000, the MSB is 1 (in bold).
• Scan – One data sample containing temperature, conductivity, pressure,
and optional auxiliary inputs (at full rate, obtained 24 times per second
with the SBE 911plus).
• Word – Used to describe a group of data bits subject to certain arithmetic
and display operations by the Deck Unit. A word consists of 3 bytes. A
word may comprise a single frequency channel, two A/D channels, or
other parameters. For example, the Modulo word conveys the modulo
count; pump, bottom contact, modem, and water sampler interface status
bits; and a 12-bit number representing pressure sensor compensation
temperature.
• Word Number – The sequential position of a data word in the scan. The
word number depends on the order in which the word is presented to the
computer or displayed, not on the order in which a particular sensor’s data
was acquired. The first word in the scan is word number 0.
MISCELLANEOUS
• PCB – Printed Circuit Board.
SOFTWARE
• NMEATest – Sea-Bird’s Win 95/98/NT/2000/XP NMEA message
simulation program, which simulates NMEA messages for testing
purposes (program is installed with SBE Data Processing).
• PROG11V2 – Sea-Bird’s program to copy calibration coefficients from
the instrument configuration (.con) file to the Deck Unit (program is
installed with SBE Data Processing).
• SBE Data Processing – Sea-Bird’s Win 2000/XP data processing
software, which calculates and plots temperature, conductivity, pressure,
data from auxiliary sensors, and derived variables such as salinity and
sound velocity.
• Seasave V7 – Sea-Bird’s Windows 2000/XP software used to acquire,
convert, and display real-time or archived raw data.
• SEASOFT V2– Sea-Bird’s complete Windows 2000/XP software
package, which includes software for communication, real-time data
acquisition, and data analysis and display. SEASOFT V2 includes
SEATERM, Seasave V7, SBE Data Processing.
• SEATERM – Sea-Bird’s Win 95/98/NT/2000/XP terminal program used
to communicate with the SBE 11plus V2.
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