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Manual revision 041
Section 4: Deploying and Operating MicroCAT
SBE 37-SM RS-232
39
Output Format Setup
Commands
OutputFormat=x
x=0
: output raw decimal data, which
always includes temperature, conductivity,
and optional pressure.
x=1
(default): output converted decimal
data.
x=2
: output converted decimal XML data.
CompatibleMode=x
x=Y
: Alter the output format for
compatibility with older SBE 37-SM
firmware versions.
x=N
: Do not.
OutputTemp=x
x=Y:
Output temperature (units defined by
SetTempUnits=
) with each sample if
OutputFormat=1
or
2
.
x=N:
Do not.
SetTempUnits=x
x=0
: Temperature output °C, ITS-90.
x=1
: Temperature output °F, ITS-90.
OutputCond=x
x=Y:
Output conductivity (units defined
by
SetCondUnits=
) with each sample if
OutputFormat=1
or
2
.
x=N:
Do not.
SetCondUnits=x
x=0
: Conductivity and specific
conductivity output S/m.
x=1
: Conductivity and specific
conductivity output mS/cm.
2
: Conductivity and specific conductivity
output µS/cm.
OutputPress=x
x=Y:
Output pressure (units defined by
SetPressUnits=
) with each sample if
OutputFormat=1
or
2
.
x=N:
Do not.
SetPressUnits=x
x=0
: Pressure output decibars.
x=1
: Pressure output psi (gauge).
OutputSal=x
x=Y:
Output salinity (psu) with each
sample, if
OutputFormat=1
or
2
.
x=N:
Do not.
OutputSV=x
x=Y:
Output sound velocity (m/sec), using
Chen and Millero formula (UNESCO
Technical Papers in Marine Science #44)
with each sample, if
OutputFormat=1
or
2
.
x=N:
Do not.
Notes:
See
Data Formats
after the command
descriptions for complete details.
The MicroCAT does not
store
salinity,
sound velocity, or specific
conductivity in memory when they are
enabled. It calculates and outputs
these derived parameters in real-time,
when polled for data or as data is
uploaded; therefore, outputting these
parameters has no effect on the
number of samples that can be stored
in memory.
Salinity, sound velocity, and specific
conductivity (as well as other
parameters, such as density) can also
be calculated in SBE Data
Processing, from data uploaded from
the MicroCAT’s memory.
The pressure sensor is an absolute
sensor, so its
raw
output
(
OutputFormat=0
) includes the effect
of atmospheric pressure (14.7 psi).
However, when outputting pressure in
psi
or
decibars
, the MicroCAT
outputs pressure relative to the ocean
surface (i.e., at the surface the output
pressure is 0 psi or 0 dbar). The
MicroCAT uses the following
equations to convert psia:
P (psi) = P (psia)
– 14.7
P (dbar) = [P (psia) - 14.7] * 0.689476