Connect one end of a network cable onto any one of your computer's serial
ports. (Don't connect to your computer's parallel port - it won't work.)
Connect the other end of the network cable onto your Model 308 or 309
network card serial port.
Check that your Model 308 or 309 is turned on (powered up).
Unzip (decompress) the "Model309Utility.zip" file and the
Double click the "Model 309 Utility" file to launch it.
Allow the Model 309 Utility to find your instrument, which it does automatically.
(Be certain that you're connected to your computer's serial port - a parallel
port won't work.) If a warning dialog concerning reading hold parameters
appears, simply dismiss it - it won't affect operations.
Click on the "Instrument" menu and select "Install Operating
Navigate to the "Model 309 OS vX.XX" file you downloaded earlier
and double click it to select it.
Check that your area is reasonably protected from a power or network
cable disruption and click "OK".
Wait until the installation is complete, then follow the final prompt
from your computer.