If you are reading this document for the first time, please continue with section 3. You will be referenced back here when the time is ripe.
Once you have successfully loaded the modules, your DEC2000 is in slave mode, meaning that it is now your computer's slave, not yours anymore. If you wish to reestablish your mastery over the device, you have to manually remove power from the device, wait about ten seconds, then manually plug it back in or flip the switch to on.
Make sure you remove the module ttusb-dec before power-cycling the device!