Dan, Yes, you are right. There are so many variants of the FE-56xx devices that I'm sure even FEI don't have a clue which is which!
The FE-5680 family are invariably single supply, although the connectors vary. Pull the lid off and with an Ohm-meter trace the input to the regulators back to the DB9 or DB15 connector to be sure. +15V should do the job. As far as my experience goes, only the 5650 family require dual supply. Anyway, a sure way to check is by seeing if there are both +12V and +5V regulator chips fitted in the power supply section behind the panel. If you have any more questions, please ask. I have four different (and working) FEI units of various models. 73, Murray ZL1BPU _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
