Manual revision 041
Section 4: Deploying and Operating MicroCAT
SBE 37-SM RS-232
28
Real-Time Data Acquisition
The length of cable that the MicroCAT can drive is dependent on the baud
rate. Check the capability of your computer and terminal program before
increasing the baud; high baud requires a short cable and good PC serial port
with an accurate clock. The allowable combinations are:
Maximum Cable Length (meters)
Maximum Baud Rate
200
4800
100
9600
50
19200
25
38400
16
57600
8
115200
If acquiring real-time data with Seaterm232, click the Capture menu; enter the
desired file name in the dialog box, and click Save. Begin sampling. The data
displayed in Seaterm232 will be saved to the designated file. Process the data
as desired. Note that this file
cannot be processed by SBE Data Processing,
as it does not have the required headers and format for Sea-Bird’s
processing software
. To process data with SBE Data Processing, upload the
data from the MicroCAT’s memory.
Timeout Description
The MicroCAT has a timeout algorithm. If the MicroCAT does not receive a
command for 2 minutes, it powers down its communication circuits to prevent
exhaustion of the battery pack. This places the MicroCAT in quiescent state,
drawing minimal current.
To re-establish control (wake up), select Connect
in Seaterm232’s Communications menu or press the Enter key.
Notes:
Baud rate is set with
BaudRate=
.
Set
TxRealTime=Y
to output real-
time data. See
Command
Descriptions
in this section for
command details.
If using external power, see
External Power
in
Section 2:
Description of MicroCAT
for power
limitations on cable length.