Manual revision 017
Section 2: Description of SBE 33
SBE 33
17
System Communications
When sending commands to the Water Sampler to reset the system or to fire
bottles, the SBE 33 sets the most significant bit low.
Notes:
Abbreviations: DPSK = differential phase shift keyed, FSK = frequency shift keyed
PDIM can be substituted for Water Sampler, when a Water Sampler is not available or needed. PDIM provides same
power and CTD data interface functionality, but no water sampling capability.
Surface PAR Sensor input: Surface PAR channel was optional in earlier versions of the SBE 33.
Data bits and parity for Serial Data Channel between SBE 33 and computer must match data bits and parity of CTD
(8 data bits and no parity for SBE 19
plus
, 19
plus
V2, 25
plus
, or 49; 7 data bits and even parity for SBE 19 or 25).
Seasave also supports acquisition of data from a NMEA device connected directly to the computer (instead of the
deck unit).
SBE 25: If the SBE 25 is integrated with more than 4 auxiliary voltage sensors, and the SBE 33 is appending both
NMEA and Surface PAR, you must set the SBE 25 real-time output rate to 4 scans/sec or less (see the SBE 25
manual for command details).
SBE 25
plus
: If the
SBE 33 is appending both NMEA and Surface PAR, you must slow down the real-time output rate
by setting
SetHistoricRate=0
(see the 25
plus
manual for command details).
SBE 49: Seasave 7.23.2 and later supports acquisition of Surface PAR data.
