Sea-Bird Electronics SBE 38, User Manual

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Reference Sheet Version #004, 03-23-11; Firmware Version 1.4 and later 1
SBE 38 Digital Oceanographic Thermometer Reference Sheet
(see SBE 38 User’s Manual for complete details)
Interface
• RS-232 (standard) – one SBE 38 connected to the interface.
• RS-485 (optional) – one or more SBE 38s sharing one pair of wires.
Sampling Modes
• Polled sampling – SBE 38 takes one sample and transmits data.
• Continuous sampling – SBE 38 continuously samples and transmits data. As programmed, SBE 38 begins sampling
on power-up or waits for a command to begin sampling. Note that for RS-485 applications with several sensors
sharing one pair of wires, the SBE 38 cannot sample continuously.
For both polled and continuous sampling, the SBE 38 averages NAvg A/D cycles per sample. It outputs converted (°C) or
raw (counts) data, depending on Format= . For converted data, number of digits after the decimal place is defined
by Digits= .
Communication Setup Parameters
1. Double click on seaterm.exe.
2. Once main screen appears, in Configure menu select SBE 38. Input in dialog box:
• Serial Port: COM1 through COM10 are available
• Baud Rate: 9600 (or other if applicable)
• Data Bits: 8
• Parity: No Parity
• Mode: RS-232 (Full Duplex) or RS-485 (Half Duplex)
Deployment
1. Install I/O cable and locking sleeve.
2. Program SBE 38 for intended deployment (see other side of this sheet for Command Instructions and List ):
A. Establish setup parameters.
B. Use
one
of following sequences to start sampling:
• If AutoRun=N : Go to start sampling continuously now, or TS or TH to take a single sample.
• If AutoRun=Y : Apply power to start sampling continuously now.
3. Mount SBE 38.
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