User`s manual

Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49
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Setup Commands
Baud=x x= baud rate (1200, 2400, 4800, 9600,
19200, or 38400). Default 9600.
OutputFormat=x x= 0: Output raw frequencies, A/D counts,
and voltages in Hexadecimal form. Must
use this format for acquiring, viewing,
and saving real-time data in Seasave.
Seasave creates a data file that can be
processed with SBE Data Processing
(see Acquiring and Processing
Real-Time Data with Seasave and
SBE Data Processing).
x= 1: Output converted (engineering units)
data in Hexadecimal form.
x= 2: Output raw data in decimal form.
x= 3: Output converted (engineering units)
data in decimal form. Must use this format
to output salinity or sound velocity. If
logging data to ROV, AUV, etc., use this
format if you want to process saved data
with SBE Data Processing (see Acquiring
Real-Time Data with ROV, AUV, etc. for
Processing by Sea-Bird Software).
Default.
OutputSal=x x= Y: Calculate and output salinity (psu).
Only applies if OutputFormat=3.
Default.
x= N: Do not calculate and output salinity.
OutputSV=x x= Y: Calculate and output sound velocity
(m/sec), using Chen and Millero formula
(UNESCO Technical Papers in Marine
Science #44). Only applies if
OutputFormat=3. Default.
x= N: Do not calculate and output
sound velocity.
SetDefaults Reset following to default values:
• OutputFormat=3
• OutputSal=Y
• OutputSV=Y
• NAvg=1
• MinCondFreq=3000
• PumpDelay=30
• ProcessRealTime=Y
• TAdvance=0.0625
• Alpha=0.03
• Tau=7.0
• AutoRun=N
Notes:
• The FastCAT’s baud rate (set with
Baud=) must be the same as
Seaterm’s baud rate (set in the
Configure menu).
• The minimum baud is dependent on
sampling rate (NAvg=) and output
format (OutputFormat=).
See Baud, Cable Length, and
Data Transmission Rate and
Data Output Formats.
Note:
Sea-Bird’s real-time data acquisition
software (Seasave) requires data in
raw hexadecimal (OutputFormat=0).
Before beginning a cast:
• If you will be using Seasave to view
and save real-time data for future
processing by SBE Data Processing
- You must set output format to
raw hex.
• If you will be using Seaterm to view
and capture real-time data (cannot
be processed by SBE Data
Processing) - Set output format to
converted decimal for ease in
viewing data.
The FastCAT does not perform real-
time corrections if the output format is
raw hex or raw decimal
(OutputFormat=0 or 2), even if
ProcessRealTime=Y.
Note:
See Autonomous Sampling
Commands below for NAvg=,
MinCondFreq=, PumpDelay=,
ProcessRealTime=, TAdvance=,
Alpha=, Tau=, and AutoRun=
descriptions; these commands apply
only to autonomous sampling.