Windmill Software Ltd
Data Acquisition Intelligence

March 2011

Windmill 7 Technical Support

ComDebug Settings for a Turner Fluorometer

Read this in conjunction with the Getting started with ComDebug and COMIML Serial Driver page.

For information on what each of the settings means, see the Serial Driver Settings Overview. For help on interfacing a GPS along with a Turner Fluorometer, see our GPS page.

Turner Designs SCUFA submersible Fluorometer

Set the Analog Output rate on the fluorometer to 1 Hz. (If set to 5 Hz or internal data logger the serial output will be disabled.)

COM Port Settings

Comm Port:	Select the port to which your instrument is connected.
Baud Rate:	9600
Data Bits:	8
Parity:	None
Stop Bits:	1
Flow Control:	None

Data Format

Example data string:	08/08/01 16:15:48: 18.899 18.899 83.298 26.2(C)<cr><lf> Where <cr> is a carriage return character and <lf> a linefeed, and the data is: Date, Time, Fluorescence, TCF (Temp. Corrected Fluorescence), Turbity, Temperature
Data format:	ASCII
Example parsing:	Ignore Until :<space> Extract Until <space> where <space> is a space character (press the space bar, don't type<space>). This would capture fluorescence data. To also collect temperatures you could use: Search <space> Search <space> Search <space> Extract Until (C)

Instrument Timing

Read:	In the Background
Timeout:	5000 ms
Instrument Idle Time:	500 ms
Data Persistence Time:	1000 ms

Trouble-Shooting

Confirm that the fluorometer is receiving power: check that the excitation light is illuminated upon power up.
Make sure that the fluorometer has the Analog output enabled, and an output rate of 1 Hz. Otherwise data streaming will be disabled.
If you do not see data in ComDebug's Terminal screen:
- try connecting the fluorometer to alternative COM ports
- If using a USB-RS232 converter, its settings must also match those used by your instrument, see our USB-Serial converter page for help, especially point 7.
- Check your cable, if possible try swapping the cable for another.
- If still nothing see our Trouble-Shooting Serial Port Connections page.

Further Information:
Windmill Serial Port Driver Settings
Getting Started with ComDebug and COMIML
COM Port Settings
SCUFA Manual
SCUFA Serial data output example

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