In a message dated 11/6/2007 16:29:16 Pacific Standard Time, [EMAIL PROTECTED] writes:
>George for a single ground pin OXCO you might want to consider compensating >for the oven's internal ground bounce. The voltage drop caused by a normal >heater current is around 1/4 to 1/2mV for an MTI 260 oven. Hi Peter, there was some discussion about this a couple of days ago. All I can add in regards to the Fury GPSDO is: the EFC control voltage ground, and heater ground MUST be Kelvin-sensed. Any ground loop error above about 10 - 50 microvolts would affect the systems' accuracy on good double oven OCXO's. Whoever conceived to put both the heater current and EFC ground return on the same pin must not have been paying any attention in his/her engineering classes. bye, Said ************************************** See what's new at http://www.aol.com _______________________________________________ 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.
