Section 4: Deploying and Operating SBE 19plus V2
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RS-232 Sensor Setup Commands
The SBE 19plus V2 can interface with an SBE 38 secondary temperature
sensor, or up to 2 Pro-Oceanus Gas Tension Devices (GTDs).
Setup for SBE 38:
Set up SBE 38 to interface with SBE 19plus V2, before you connect it to
19plus V2. Connect SBE 38 directly to computer, power with an external
power supply, and (using SEATERM or Seaterm232) set:
• Baud rate to same baud rate as 19plus V2 (Baud=)
• Interface to RS-232 (Interface=232)
• Sampling to begin when power applied (AutoRun=Y)
• Output to converted data (Format=C)
Connect SBE 38 to SBE 19plus V2 RS-232 bulkhead connector, using
provided cable. In the 19plus V2, set SBE38=Y to enable interface.
SBE38=x x=Y: Enable RS-232 SBE 38 secondary
temperature sensor.
x=N: Do not enable SBE 38.
Setup for GTD:
SBE 19plus V2 must be in Moored mode (MM) to obtain GTD data; it
cannot obtain GTD data in Profiling mode (MP). Set up GTD to interface with
SBE 19plus V2, before you connect it to 19plus V2. Connect GTD directly to
computer, power with an external power supply, and (using software provided
by Pro-Oceanus) set:
• Baud rate to same baud rate as 19plus V2.
• Output to millibars.
• Sum of pressure integration time and temperature integration time so
that GTD responds to a take pressure reading command in 40 seconds or
less (required so that 19plus V2 does not time out while waiting for reply).
Connect GTD to SBE 19plus V2 RS-232 bulkhead connector, using provided
cable (end labeled Pro-Oceanus to GTD and end labeled Sea-Bird to 19plus
V2). In the 19plus V2, set:
• GTD=Y or DualGTD=Y to enable interface.
• SendGTD= to change IDs if necessary.
Each time a sample is to be taken, 19plus V2 sends following commands to
GTD (ID= 01, 02, etc.):
• *ID00VR <CR><LF> - get GTD firmware version; wait up to 3 seconds for reply.
• *ID00SN <CR><LF> - get GTD serial number; wait up to 5 seconds for reply.
• *9900P5 <CR><LF> - command all GTDs to sample pressure; hold data in GTD.
• *ID00DB <CR.<LF> - get held pressure; wait up to 90 seconds for reply.
• *9900Q5 <CR><LF> - command all GTDs to sample temperature; hold data in GTD.
• *ID00DB <CR.<LF> - get held temperature; wait up to 90 seconds for reply.
Notes:
• The 19plus V2 requires verification
when SBE38=, GTD=, or DualGTD=
is sent. The 19plus V2 responds:
this command will change the
scan length and/or initialize
logging. Repeat the command to
verify.
Type the command again and press
the Enter key to proceed. The
19plus V2 responds:
Scan length has changed,
initializing logging
• The 19plus V2 configuration (.con)
file must match this selection of
RS-232 sensor when viewing real-
time data or processing uploaded
data. View and edit the .con file in
SEASAVE or SBE Data Processing.
These parameters are factory-set to
match the ordered instrument
configuration.
• You can use Seaterm232 to
communicate directly with the
SBE 38 (when the sensor is
connected directly to the computer).
Alternatively, use the older
SEATERM software, as documented
in the manual for the SBE 38.
•
See the SBE 38 or Pro-Oceanus
GTD manual for command details
for these instruments.
Note:
In Moored mode, the 19plus V2
sample interval (SampleInterval=)
must be greater than or equal to the
sum of the times required to sample.
Total time is affected by the following:
- Programmable pressure
integration time for GTD.
- Programmable temperature
integration time for GTD.
- Minimum time required for 19plus V2
to take a sample (≈ 2.5 sec).
- Time required for 19plus V2 to take
and average NCycles= samples;
samples are taken 0.25 sec apart.
- Delay after providing power to
external voltage sensors before
sampling (DelayBeforeSampling=).
- Time required to run pump before
sampling (0.5 sec if
MooredPumpMode=1).
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