EEVblog #235 - Rubidium Frequency Standard

TEARDOWN: http://www.youtube.com/watch?v=FRdGsSu5Nec
What's all this Rubidium Frequency stuff anyhow?
Dave got an FE-5680A Rubidium frequency standard on ebay. How do they work?, and how does it compare to a regular crystal oscillator, a DTCXO, or an oven stabilised oscillator?

Category:

Science & Technology

Tags:

• rubidium
• frequency
• standard
• fe-5680a
• ebay
• dtcxo
• how
• it
• works
• diy
• serial
• teardown
• stability
• counter
• tutorial
• philips
• input
• output
• oven
• stabilised
• oscillator
• rb
• atomic
• clock
• 10mhz
• sine
• wave
• power
• consumption
• measurement
• 5v
• voltage
• supply
• multimeter
• Electronics
• Technology
• hyperfine
• transition
• atom

[CampKohler]

Is the heat coming from the lamp? Does the resonating chamber take this into account and that is the reason for the delay in locking? If you do do a teardown, open it right after shutdown and check everything with a IR thermometer to see which parts are at what temperature.

[EEVblog]

@CampKohler I think I mentioned that the lamp part was the hottest.

[TheLaidukas]

You were so convincing that I just bought two of these. :D

[EEVblog]

@TheLaidukas I'll be sure not to spend my commission all at once! :->

[LukeeeeBennettPlus]

Is that a Hakko FX888 in the background? Is that what you use most frequently?

[EEVblog]

@LukeeeeBennettPlus Yes it's what I recommend to most people.

[FrozenHaxor2]

I want to build a clock with it :D

[CampKohler]

If any of you rubidiumites want to see the next level of teardown, Mike from mikeselectricstuff saw this vlog, bought one, ruined it and so proceded to destroy it for our benefit. Take a looksee at /watch?v=ymV9LwhD0W0.

[KhaledHamalawy]

love you dave , you are awesome

[davidjereb]

What a coincidence! I bought one of these just 2 months ago. I'm currently planning to put it in a tidy box and stick a linear power supply in there. I'm also thinking of dividing the frequency and giving it a PPS output.

[Nadrealis]

Dave you planning anything for your 300th? It's right around the corner at the pace you're going :)

[googacct]

If you are going to channel Bob Pease, you are going to have to grow a big bushy beard. :-)