Field Service Bulletin 17: SBE 37-SI and SIP MicroCAT Data Storage Error

Publication Date: 
Friday, August 1, 2014
FSB17Aug14.pdf288.46 KB

Equipment Affected

All SBE 37-SI and 37-SIP with RS-232 interface and firmware versions 3.0, 3.0a, 3.0b, 3.0c, and 3.0d; the firmware version is shown in the first line of the status (DS) response (see example below):
     SBE 37SI-RS232 3.0d  SERIAL NO. 6017  20 Aug 2008 14:23:06
     . . .


Description of Problem

A firmware bug causes the MicroCAT to not store data in FLASH memory when StoreData= is set to yes, if power is removed from the MicroCAT at any time after the StoreData= command is sent. The DS and GetCD replies continue to show that the MicroCAT is configured to store data, but the MicroCAT will not store data in FLASH memory after power is removed and reapplied.

This bug has no impact on the real-time data output by the MicroCAT.



Files were placed on our website to allow customers to update their MicroCAT’s firmware. Download:

Update and test the firmware in your instrument with one of the following simple procedures (time required to update the firmware is several minutes, in addition to setup and testing time).

  1. Connect the data I/O cable to the MicroCAT and to an RS-232 COM port on the computer.
  2. Record the current setup of the MicroCAT and verify / set the baud rate in Seaterm as follows:
  1. In the Configure menu, select the SBE 37. In the dialog box, select the COM port and current baud rate that the MicroCAT is programmed to use for communication. Click OK.
  2. Click Connect. You should get an S> prompt or an <Executed/> tag, depending on the MicroCAT's setup.
  3. Record the current MicroCAT setup for re-entry after the firmware update --
    ‑ Click Capture. Enter the desired file name and location to record the current setup.
    ‑ Click Status. Seaterm sends the status (DS) command and shows the response from the MicroCAT.
  4. Verify the baud rate the MicroCAT is using for communication by looking at the baud in the status bar at the bottom of the Seaterm window. If the MicroCAT is communicating at a rate other than 9600 baud --
    ‑ Type BaudRate=9600 and press Enter.
    ‑ In the Communications menu, select Baud Rate, and select 9600.
    ‑ Type BaudRate=9600 and press Enter again to reset the baud..
    ‑ The MicroCAT should now be communicating at 9600 baud; verify this by looking at the status bar again.
  5. Click Capture to end capturing of the session.
  1. Type OutputExecutedTag=Y and press Enter; the MicroCAT must display XML Executed and Executing tags while using the firmware loader.
  2. Close Seaterm to free the COM port for use with the firmware loader.
  3. Double click on FirmwareLoaderV2_0.exe. The software will lead you through the installation process. As a default, the software will be installed in c:\Program Files\Sea-Bird\FirmwareLoader.
  4. Double click on LoadFirmware.exe. The following appears:
  1. Select the computer COM port for communication with the MicroCAT.
  2. Select the instrument ‑ SBE 37-RS-232. Notice that the Select HEX File button changes to Select TXT File.
  3. Click Select TXT File and select the appropriate .txt file — SI-232.txt.
  4. Click Program. The status field changes from Waiting to Program, and shows the download progress.
  5. When done, the status field shows successful firmware update. Click Exit.
  1. Test the MicroCAT in Seaterm to verify that the new firmware is installed properly:
  1. Click Connect. You should get an <Executed/> tag.
  2. Click Status. Seaterm sends the status (DS) command and shows the response from the instrument. Verify that the firmware version on the first line of the status response is 3.0e.
  1. Set up / reset the MicroCAT in Seaterm for your intended sampling scheme.
    Do not forget to reset the baud rate to the desired rate for the deployment (BaudRate=), and to turn off the Executed tags if desired (OutputExecutedTag=N).
Applies To