I am a little confused. The 5061A only puts out 5 MHz, 1 MHz, and 100 kHz so I am not sure what you are reading at 9.999.....
After the tube pumps down and the Ion Pump I is low, switching from CS Off to Loop Open allows the CS Oven to turn on. As the CS Oven heats up, the CS Oven indication comes down off the peg. Then, over time, typically 30 to 45 minutes, the Beam I and the 2ND Harmonic indications begin to move up. As this occurs, the Alarm light usually goes off. Once that occurs, assuming you have the COARSE adjusted close to 5 MHz and the FINE set to 250, switching to OPER and pushing the LOGIC RESET button causes the CONTINUOUS OPERATION light to come on. Assuming you have the C-Field adjusted properly, when that occurs, check the CONTROL indication. It should be on scale, somewhere near 0, and steady. If so, then you should be on 5 MHz. Did you do the C-Field adjustment? Joe -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Dott. Alfredo Rosati Sent: Friday, February 26, 2010 5:29 PM To: [email protected] Subject: [time-nuts] 5061a now look at wrong freq now ion pump current is low -2380 present 2nd good signal Beam 1 low only 10 The pll work if I change coarse the control line corrects the frequency , no alarm . But comparing the frequency to my rubidium and my z3805 there are to much difference. frequecymeter read9.999.999.800.25 any suggestion ? i5uxj _______________________________________________ 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.
