Sweet! Congratulations HM!!
Why is there no emoticon for a happy dance?
Looking at your numbers, I think everything looks good. Probably the most important numbers would be:
- Power supply voltages (for obvious reasons)
- OCXO cmd - I think this is the EFC to the oscillator. The range is +-4500 so yours is fine.
- Ramsey Level: 2500 +-500. Maybe on the edge. Watch this and see which way it goes.
- Zeeman level: 2000 +- 600. No problem there.
- Pump current: That's the ion pump. Lower is better. Yours will probably go to zero which is perfect.
- ShrtTerm StDv: Range is up to 225 so 158 is fine.
The only thing I'm puzzled by is that the temperature is only 29.1. On my unit, it's labelled as Cesium Module Temperature and tends to be about 20C above ambient. Is your room really cold?
Now the big question is where do you go from here? What was your reason for buying it? Remember that whenever you're running this, you're using up the Cesium, so you don't want to let it run 24/7 without a good reason. In particular, if your Ramsey Level stays low, it could mean that your tube is getting old so you want to be really careful with the runtime. I'd suggest that you get either a Rubidium standard or a GPSDO and keep the 4040A on the shelf for occasional checks against the others. A GPSDO would give you absolute confirmation that the 4040A is working properly, but I don't think it's really necessary. A good Rubidium standard will probably give you better short-term performance than the 4040A or most GPSDOs. A good OCXO will give you the best short-term performance of all of the above.
Congratulations again! It's great to see a wonderful piece of equipment like that working properly and saved from the trash!
Ed
P.S. If you'd like some more info on what all the parameters mean, check out this document:
http://www.ampere.com.mx/pdf/Manual_CsIII.pdfIt's the manual for a Cesium standard that's two or three generations newer than ours, but was made by the same people. They used a lot of the same terminology as ours does. It also talks about how their units work. It's different than many other Cesium standards.