If desired, the TDA-2G data output information can be captured, stored to a file and imported into spreadsheet programs for statistical analysis or report generation.
Connect the TDA-2G unit serial port to your PC using a 9 pin D sub-miniature serial cable configured for null-modem communication.
Null modem refers to a communication method to directly connect two DTEs (computer, terminal, printer, etc.) using an RS-232 serial cable. Essentially the transmit and receive lines cross-over instead of connecting pin-for-pin. See the diagram below.
One of the easiest programs for capturing data is probably Windows® terminal available in the Windows OS inclusive through version XP. See your Windows® documentation for version specific setup procedures. For newer computers there are also many freeware and purchase options to choose from if desired.
From the terminal program the data may be imported into a commercially available spreadsheet program and formatted.
Configure the Serial port in use by the photometer to the following settings:
- Baud Rate – 2400
- Data Bits – 8
- Parity – none
- Stop Bit – 1