Beam current would be important to get an idea on life. Curious does the 71 display that?? Regards Paul WB8TSL
On Fri, Sep 27, 2013 at 12:52 PM, paul swed <[email protected]> wrote: > Cheap is relative. Curious what it means? > Paul > WB8TSL > > > On Fri, Sep 27, 2013 at 12:20 PM, mc235960 <[email protected]> wrote: > >> Hi, >> Some Qs for someone with 5071A experience. >> >> I have picked up a cheapo second hand 5071A and would like to know what >> tube I have and what remaining life I might expect. >> It locked in about 10-15 mins after I applied power for the first time >> this morning. >> >> the box s/n is 3249A00498 and the tube s/n 3124A00248 has an (S) suffix . >> There is an opt 001 (high performance CBT) label on the box. >> >> *idn? returns HEWLETT-PACKARD,5071A,0,X.3249 The Symmetricom manual of >> 2006 give a "SYMMETRICOM" string returned. So it must be quite old I >> guess. >> >> X.3429 appears to correspond to the firmware version as seen on the LCD . >> >> Given that, does anyone know how to find out >> >> a) date of manufacture >> b) type of CBT >> >> I could not find any command sequence to indicate usage, so is there a >> way to find out >> >> c) The cumulated CBT power on time? >> >> d) If that is not available, is there anything in Status summary that >> could give a clue to aging? >> >> scpi> syst:print? >> >> MJD 56562 15:20:21 >> CBT ID: 3124A00248(S) >> Status summary: Operating normally >> Power source: AC >> Log status: 15 entries >> >> Freq Offset: 0e-15 Osc. control: -5.57 % >> RF amplitude 1: 35.5 % RF amplitude 2: 33.4 % >> Zeeman Freq: 39949 Hz C-field curr: 12.157 mA >> E-multiplier: 1357 V Signal Gain: 14.4 % >> >> CBT Oven: 6.1 V CBT Oven Err: 0.02 C >> Osc. Oven: -9.0 V Ion Pump: 0.2 uA >> HW Ionizer: 1.1 V Mass spec: 11.0 V >> SAW Tuning: 1.9 V DRO Tuning: 5.7 V >> 87MHz PLL: 1.1 V uP Clock PLL: 2.7 V >> +12V supply: 12.4 V -12V supply: -12.3 V >> +5V supply: 5.5 V Thermometer: 42.3 C >> >> Regards, >> Mike >> >> >> >> >> >> >> >> >> _______________________________________________ >> 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. >> > > _______________________________________________ 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.
