Manual revision 017
Section 3: Setting Up System
SBE 33
22
3.
The main screen looks like this (example shown is for SBE 19
plus
):
4.
In the Configure menu, select the appropriate CTD.
5.
In the dialog box, click the COM settings tab. Select the firmware version,
COM port, baud rate, data bits, and parity (see the CTD’s configuration
sheet). Click OK to save the settings and exit the dialog box.
6.
In the Communications menu, select
Options
/
Cycle baud
when connecting
.
7.
Click Connect on the Toolbar. Seaterm tries to connect at the baud set in
Step 5. If it cannot, it cycles through all other possible baud rates to try to
connect. An
S>
prompt shows that communication has been established.
8.
Look at the connection baud rate in the Status bar. If this is not a baud that
can be used with the Water Sampler (600, 1200, 2400, or 4800), change
the baud in the CTD. The command to change the baud is given below for
CTDs with programmable baud (contact Sea-Bird for instructions on
older CTDs):
SBE 19 - Send
SBn
, where n =1 (600 baud), 2 (1200 baud), or
6 (4800 baud - for firmware version 3.1d and above in the 3.0 series;
not applicable to the 4.0 series).
SBE 19
plus
or 49 - Send
Baud=x
, where x =1200, 2400, or 4800.
SBE 25 - Send
SRx
, where x=1 (600 baud), 2 (1200 baud), or
4 (4800).
9.
Click Connect on the Toolbar again; verify that the Status bar shows the
new baud rate. Record the baud rate - you must also set the CTD baud rate
in the SBE 33 (see
Setting Up and Testing System
).
10.
Establish other CTD setup and logging parameters (see CTD manual).
Note the following requirements for use with the SBE 33:
SBE 19
plus
– Set
OutputFormat=0
(raw hex).
SBE 49 – Set
OutputFormat=0
(raw hex). For typical use, set
AutoRun=Y
so the SBE 49 starts sampling automatically when
power is applied.
11.
Send
QS
to put the CTD in quiescent (sleep) state (not applicable to
SBE 49).
Status bar
Menus
Command/Data Echo Area
Toolbar
Instrument
Computer
COM port
Instrument
firmware version
Baud rate
, data bits,
stop bits, and parity
Capture
to file
status
–
grayed
out if not
capturing
Upload
parameter
Notes:
The SBE 33’s factory-default setup
commands the Water Sampler to
communicate with the CTD at
4800 baud. The setting in the
SBE 33 must match the baud rate
programmed in the CTD.
For the most efficient operation,
keep the baud at 4800 baud if it is
feasible for the CTD.
See
Setting
Up and Testing System
.
Once all baud rates are set, you can
also communicate with and change
the setup of the CTD
through
the
SBE 33 and Water Sampler using
Seaterm. See
Setting Up and
Testing System
.
