Hi Chris, > Ideally, I would like to find another Z3816, as this would provide a > spare as well as visual id of damaged parts to allow repair, but haven't > seen any for sale recently.
Start with http://leapsecond.com/museum/z3816a/ Maybe also: http://leapsecond.com/museum/z3815a/ I have high-res versions of the photos if you need them. Another thing you can try is bench-measure the EFC range of your MTI oscillators. Through a 10k resistor, slowly sweep the EFC from -10 to +10 volts and plot the output frequency every volt or so. The shape of the curve will tell you if the MTI is -10 to +10, -5 to +5, 0 to +5, etc. A third thing to try is manually set the DAC over RS-232. There are undocumented SCPI/pForth commands to do this and I can walk you through the process by email. The advantage here is you don't have to unsolder anything. > Any ideas ?. It's been a great lab standard and it would be good to keep > it running for a few more years... Yes, both the AC and DC versions of the Z3816A are very nice. It is well-worth trying to get it working again. /tvb _______________________________________________ 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.
