Manual revision 017
Section 3: Setting Up System
SBE 33
24
Setting Up and Testing System
1.
Double click on seaterm.exe; Seaterm opens.
2.
In Seaterm’s Configure menu, select the SBE 33.
A.
In the Configuration Options dialog box, click on the COM
Settings tab and set the COM Settings:
Comm Port - for connection to SBE 33
(1 through 10 as applicable)
Baud rate between SBE 33 and computer - 9600 or 19200
(factory set to 9600)
Data bits and parity -
SBE 19
plus
, 19
plus
V2, 25
plus
, or 49 - 8 data bits, no parity.
SBE 19 or 25 - 7 data bits, even parity.
Click
OK
to save the settings and exit the dialog box.
3.
Turn on power to the SBE 33. The SBE 33 status message displays in
Seaterm:
SBE 33/36 Deck Unit V3.0 setup:
PC baud rate = 9600
CTD baud rate = 4800
8 data bits, no parity
NMEA baud rate = 4800
NMEA messages decoded =
GGA, GLL, RMA, RMC, TRF, DBT, DPT
Surface PAR disabled
NMEA depth disabled
start mode = echo characters to and from the instrument
Press @ to change the 33/36 Deck Unit setup
Looking at selected lines:
Text
Description
SBE 33/36
Both the SBE 33 and SBE 36 use the same setup procedure.
PC baud rate
Baud for communication between computer and SBE 33’s
Serial Data
channel - 9600 or 19200 (factory default 9600).
CTD
baud rate
Baud for communication between CTD and Water Sampler–
600, 1200, 2400, or 4800 (factory default 4800). Upon
power-up, the SBE 33 reads this setting and automatically
sends a command to the Water Sampler to set its baud rate.
For the most efficient operation, keep the baud rate at 4800
baud if it is feasible for the CTD. Baud rate must be set in
both the SBE 33 and in the CTD.
8 data bits,
no parity
Data bits and parity for communication between computer
and SBE 33’s
Serial Data
channel – set to 8 data bits and no
parity for SBE 19
plus
, 19
plus
V2, 25
plus
, or 49 (factory
default), or 7 data bits and even parity for SBE 19 or 25.
Must match data bits and parity of CTD.
NMEA
baud rate
Baud for communication between SBE 33 and NMEA
device, factory set in SBE 33 to 4800 (must match NMEA
device).
NMEA
messages
decoded
Output from NMEA device must match one of these
messages.
Start mode
Defines default behavior on power-up.
Echo characters to
and from the instrument
(factory default) puts SBE 33 in
Mode 1 on power-up, allowing system to communicate with
CTD, so CTD can be set up through SBE 33.
Add Lat/Lon to
the real-time HEX data
puts SBE 33 in Mode 2 on power-
up, allowing system to start acquiring Hex and NMEA
position data (and NMEA depth and/or Surface PAR, as
applicable).
Notes:
You can also launch Seaterm from
SeatermV2; you may find this useful
when using the SBE 33 with a
CTD that uses SeatermV2
(e.g., 19
plus
V2 or 25
plus
). In
SeatermV2’s Instruments menu,
select SBE 33 interface; Seaterm
opens. The remaining instructions
(Step 2 and higher) are unchanged.
The SBE 33 must be connected to
the Water Sampler to setup and test
the system. If it is not connected,
noise on the open
Sea Cable
connector will interfere with
communication with the SBE 33.
Notes:
If the communication settings you
set in Seaterm’s Configure menu
do not match the communication
settings in the SBE 33 for
communication between the
SBE 33 and computer (factory
default 9600 baud, 8 data bits, no
parity), the display will show
garbage
characters.
If this happens,
go to
Changing Communication
Settings between SBE 33 and
Computer
below before proceeding.
If in the setup menu and
no user input is received within
60 seconds, the SBE 33 times out
and exits the setup menu. Re-enter
the setup menu by typing @.
If NMEA depth is enabled (using a
NMEA depth device as well as a
NMEA position device) and/or
Surface PAR is enabled, the
description for Start mode changes to
include NMEA Depth and PAR, as
applicable:
start mode =
Add
Lat/Lon/
Depth/PAR
to the real-
time HEX data
