Hi Stanley, On Sat, 2009-01-17 at 19:29 -0800, Stanley Reynolds wrote: > Was unable to adjust to 5Mhz, 4.9999752 was the best I could get with > external pot. Internal pot has no effect, assume it is disconnected when > external is present ? Was not hard to dissemble, the oven is not warm but has > 29 volts maybe problem in the control circuit. Does anyone have any info I > could use ? > > I have downloaded a 4040B operation manual but it is not that similar to the > 4040. This unit uses a 1802 RCA microprocessor so is much older than the B > model, think it uses a 68xx type processor. > > I have no manuals for the FTS-4040 and been unable to connect a PC to the 9 > pin monitor/sync connector on the back, I need the pin out and perhaps a > older monitor program as I only have monitor 2 and monitor 3 programs. > > What I can see of the ocxo outside: > > Has 2 SMA RF out connectors and a 9 pin D connector > inside: > Oven was inside a glass vacuum bottle with layers of foam insulation to close > one end. > 2 MTH15N20 transistors to heat the oven > temp sensor on a small separate pc board part #56219-03909 REV A attached to > oven > main board not insulated is part # 56219-06802-00 REV D
There is some pinout information for 1000A and relatives in ftp://ftp.lysator.liu.se/~bg/time-nuts/FTS1200Doku.pdf I do not know if pinout applies to 1000B. -- Björn _______________________________________________ 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.
