Boy am staying clear of the rebuild discussion. Search time nuts the details are explicitly explained and interesting. Has to do with reactivity, vacuums, and shields. Correct mix of the CS stuff. My pharmacy doesn't carry whats needed, walmart either. Regards Paul
On Thu, Oct 3, 2013 at 1:07 PM, Tom Miller <[email protected]> wrote: > Hi guys, > > I wonder if the beam current amp is working? Shouldn't I at least see some > noise when I run the gain all the way up? I need to wait until I get the > manual to see where to look and what to check. I do know which DAC is used > for the beam gain setting but where to see if it works is not too clear. > > I know everyone says the tubes can't be rebuilt, but why? > > Tom > > > > ----- Original Message ----- From: "paul swed" <[email protected]> > To: "Discussion of precise time and frequency measurement" < > [email protected]> > Sent: Thursday, October 03, 2013 11:18 AM > Subject: Re: [time-nuts] Fw: FTS 4060 Cesium Time & Frequency Standard, > Datum > > > > Joe, > I did not actually look at the numbers until your email. I did reformat and > clean them up for long term retention. > Right you are and will guess the ion pump e is a direct reading at 2.4..KV > The Ion pump I is nice and low > Beam is zero or noise or profoundly weak. > All of the other voltages look reasonable. > Regards > Paul > WB8TSL > > > On Thu, Oct 3, 2013 at 9:08 AM, J. L. Trantham <[email protected]> wrote: > > Suspicious for a dead tube. >> >> Joe >> >> -----Original Message----- >> From: [email protected] >> [mailto:time-nuts-bounces@**febo.com<[email protected]>] >> On >> Behalf Of Tom Miller >> Sent: Wednesday, October 02, 2013 9:54 PM >> To: [email protected] >> Subject: [time-nuts] Fw: FTS 4060 Cesium Time & Frequency Standard, Datum >> >> >> >> Just to get this data on the list. >> >> Here are the measured voltages on U1: >> >> Pin Fn Voltage Limits >> 9 Beam I 0.001 1.01 to 3.73 >> 18 Ion Pump E 2.436 1.72 to 3.01 >> 7 Ion Pump I 0.020 0 to 2.0 >> 19 Elec Multi E 2.060 0.84 to 3.01 >> 17 C-Field I 3.65 3.28 to 4.45 (front >> panel >> sw set at 500) >> 16 Cs Oven T 1.379 1.27 to 1.55 >> 20 Xtal Oven Pwr 3.57 2.81 to 3.91 >> 3 180 MHz Lvl 2.784 0.1 to 4.8 >> 2 12.6 MHz Dig 4.84 4.0 to 5.0 >> 23 12.6 MHz Ana 1.34 0.35 to 4.28 >> 6 +5 Supply 2.427 2.35 to 2.68 >> 4 +18 V Supply 2.484 2.42 to 2.68 >> 22 - 18 V Supply 2.481 1.72 to 3.52 >> 21 Chassis T 3.045 2.62 to 3.44 >> >> >> It has been on for four days. >> >> When I compare the 10 MHz out to my GPSDO, the frequency matches up when >> the >> control (meter 4) passes 3.2 volts. There is no movement in the Beam >> current >> (meter 3) as control sweeps. >> >> >> >> Tom >> >> >> >> ----- Original Message ----- >> From: Tom Knox >> To: Tom Miller ; Time-Nuts >> Sent: Wednesday, October 02, 2013 2:00 PM >> Subject: RE: [time-nuts] FTS 4060 Cesium Time & Frequency Standard, >> Datum >> >> >> >> If anyone has a service manual I am also very interested. Thanks >> Thomas Knox >> >> >> >> > From: [email protected] >> > To: [email protected] >> > Date: Wed, 2 Oct 2013 13:22:45 -0400 >> > Subject: Re: [time-nuts] FTS 4060 Cesium Time & Frequency Standard, >> Datum >> > >> > Hello Corby, >> > >> > Thanks for the help. Yes, could you copy me on the information for the >> U1 >> > chip? I do not have anything other than the user manual from Brooke. >> At >> this >> > time, anything will be a great help. >> > >> > >> > Best regards, >> > Tom >> > >> > >> > ----- Original Message ----- >> > From: <[email protected]> >> > To: <[email protected]> >> > Sent: Wednesday, October 02, 2013 11:47 AM >> > Subject: [time-nuts] FTS 4060 Cesium Time & Frequency Standard, Datum >> > >> > >> > Tom, >> > >> > On the 4060 you can easily monitor the Ion pump voltage and current, >> the >> > electron multiplier voltage, and other important parameters by >> measuring >> > the voltages on the U1 chip on the uP board. >> > This saves you fronm having to diconnect stuff to measure the HV and >> > such. >> > If you don't have a manual showing the pins of U1 I can post to pinout >> > here on Time Nuts. >> > >> > Corby >> > >> > ______________________________**_________________ >> > time-nuts mailing list -- [email protected] >> > To unsubscribe, go to >> > >> https://www.febo.com/cgi-bin/**mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> >> > and follow the instructions there. >> > >> > ______________________________**_________________ >> > time-nuts mailing list -- [email protected] >> > To unsubscribe, go to >> https://www.febo.com/cgi-bin/**mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> >> > and follow the instructions there. >> >> = >> ______________________________**_________________ >> time-nuts mailing list -- [email protected] To unsubscribe, go to >> https://www.febo.com/cgi-bin/**mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> >> and follow the instructions there. >> >> ______________________________**_________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/**mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> >> and follow the instructions there. >> >> ______________________________**_________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/** > mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> > and follow the instructions there. > > ______________________________**_________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/** > mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> > and follow the instructions there. > _______________________________________________ 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.
