Gram Precision RK-15 Series Operation Manual page 30

Enable the function of "Use Serial Keys" in the computer
Set Windows XP as a example:
1. Press "Start" ->"Run", and enter "access.cpl" ->"OK".
2. In the dialog box "Accessibility Options", enter General option, choose
"Use Serial Keys" and press "Settings".
In the dialog box "Settings for SerialKeys" , set the corresponding Serial port
and Baud rate, which should be same as Baud rate in scale.
3. Test if Serial Keys works well.
Open a Text Document, and press the Print buotton on the scale. The Serial
Keys works well, if pc exports the weighing data to Text.
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