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.
