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Aug 03 2013· Build a 10MHz Rubidium Frequency Standard and Signal Distribution Amp for my Lab By gerrysweeney on August 3 2013 December 23 2018 49 Comments Having gotten myself a Rubidium Frequency Standard I found that the unit on its own is not that useful its really just a component and needs really a supporting PSU and a decent enclosure to make it

Sure this isn t as good as a rubidium frequency standard build like we have seen in the past but as Gerry states it is nice to have a transportable standalone frequency counter that doesn

Sure this isn t as good as a rubidium frequency standard build like we have seen in the past but as Gerry states it is nice to have a transportable standalone frequency counter that doesn

Dec 10 2018· FE-5650A Rubidium Frequency Standard Teardown December 10 2018 by sam 2 Comments Pin 1 15 VDC Pin 2 GND Pin 3 LOCK signal 1VDC locked Pin 4 5 VDC Pin 5 GND Pin 6 Do Not Connect Pin 7 Do Not Connect Pin 8 RXD Received data TTL 9600 8 N 1

In late 2011 and early 2012 a number of Frequency Electronics Inc FEI Rubidium Rb frequency standards started showing up on eBay for a very attractive price $60 EEVblog 236 - FE-5680A Rubidium Standard Teardown Rubidium frequency standard Extreme Teardown

Old Symmetricom SA 22c 10MHZ Rubidium Clock Atomic Clock Lost Lock Constant temperature crystal oscillator OCXO ENE3311B ENE3311A 10MHZ 5V square wave imported teardown US $11 56 3 8 4 US $136 17 0 0 0 0 Orders 10MHz Frequency conversion PLL BOARD For atomic clock rubidium clock FE5680 US $80 98 5 0 2 2 Orders old INNOS

Jan 12 2012 TEARDOWN What s all this Rubidium Frequency stuff anyhow Dave got an FE5680A Rubidium frequency standard on eba Accurate rubidium atomic fountain frequency standard IOPscience Mar 1 2011 The design operating parameters and the accuracy evaluation of the NPL Rb atomic fountain are described The atomic fountain employs a

Aug 03 2013· If you have or want to play with an FE-5680A Rubidium Frequency Standard or an OSCILLOQUARTZ OCXO 8663-XS or a HP 53131A Counter or a Racal Dana 1999 counter or similar then this video will most likely be of interest 🙂 what I am trying to get is a predicable and reliable frequency and standard for my home lab A teardown of an FE-5680A

The seller s description of this object is FEI fe-5680b rubidium oscillator With 1pps 20mhz output ONLY 10mhz NEED to MOD and it includes pictures showing the PCB The NEED to MOD part makes it clear that the box must be opened The 1pps signal should be …

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Apr 19 2017· The Efratom SLCR-101 The SLCR-101 is made by US firm Efratom now part of Symmetricom by way of Datum best I can tell and is designed for OEM applications so it s basically a bare module that you feed power into and it gives you a nice clean stable 10MHz sinewave output as well as some status signals

Mar 04 2017· A good used lab grade rubidium standard is even more expensive The unit I bought from eBay is a Datum Symmetricom 8040 Rubidium frequency standard from the late 1990s It is not in the greatest shape physically and was well used but it can still achieve a frequency lock within a few minutes So for my occasional use it is more than adequate

FE-5680A Rubidium Frequency Standard Initial Teardown April 25 2013 0 Comments The Engineer Physics Package Here is a quick look inside the FE-5060A Rubidium Frequency Standard Above you can see the entire physics package with the rubidium lamp housing on the right hand side

Sep 20 2017· Teardown Repair of a Fluke PM6685R 4 5GHz Rubidium Frequency Counter September 20 2017 Shahriar No comments In this episode Shahriar repair a Fluke PM6685R Rubidium Frequency Counter The instrument shows highly unstable results and produces high-pitch noise when powered on The high-frequency noises point to a problem with the DC-DC

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A rubidium standard or rubidium atomic clock is a frequency standard in which a specified hyperfine transition of electrons in rubidium-87 atoms is used to control the output frequency It is the most inexpensive compact and widely produced atomic clock used to control the frequency of television stations cell phone base stations in test equipment and global navigation satellite systems

8040C and 8040CLN Rubidium Frequency Reference Overview The Microsemi 8040C and 8040CLN provide a stable and accurate frequency reference with multiple output signal formats in an easy to install 1U rack mountable chassis The 8040C 8040CLN delivers atomic clock performance improved frequency long-term stability and configurable RF outputs

It s a low-cost frequency counter which goes all the way up to 3 GHz Here it s measuring a 10 MHz signal from my Frequency Generator while synchronized to the Rubidium frequency standard As you can see it s spot on the last digit flips between 0 and 1 every so often that s all

Teardown A look at the Datum Symmetricom 8040 Rubidium frequency standard The 8040 used an LPRO 101 low profile Rubidium oscillator oscillator Interestingly there is a note written on the top of the LPRO case vibration test may have magnetized cover As you may know Rubidium standards s accuracy is very sensitive to external

Teardown A look at the Datum Symmetricom 8040 Rubidium frequency standard The 8040 used an LPRO 101 low profile Rubidium oscillator oscillator Interestingly there is a note written on the top of the LPRO case vibration test may have magnetized cover As you may know Rubidium standards s accuracy is very sensitive to external

Apr 25 2013· Teardown of the FE-5680A Rubidium Frequency Standard Here is a quick look inside the FE-5060A Rubidium Frequency Standard Above you can see the entire physics package with the rubidium lamp housing on the right hand side The ribbon cable running into the resonator cavity has the power signal traces for the internal heater temperature sensor Helmholtz coil

Jun 01 2018· In my last post I did a teardown of the Keithley 775A programmable counter timer And while feeding a 10 MHz signal from my Rubidium frequency standard I noticed that the measured frequency was significantly lower 9 9981 MHz than the nominal 10 MHz reading and could not be compensated by adjusting the TCXO fine adjustment screw alone My suspicion quickly turned to the …

Sep 08 2017· Teardown Repair of a Fluke PM6685R 4 5GHz Rubidium Frequency Counter - Page 1 EEVblog Electronics Community Forum A Free Open Forum For Electronics Enthusiasts Professionals Author Topic Teardown Repair of a Fluke PM6685R 4 5GHz Rubidium Frequency Counter Read 1731 times 0 Members and 1 Guest are viewing this topic

Sam J Levy GQ GMC-500 Geiger Counter Teardown July 29 2019 by sam Leave a Comment Teardown photos Posted in Uncategorized FE-5650A Rubidium Frequency Standard Teardown December 10 2018 by sam 2 Comments Teardown photos Posted in Uncategorized Tektronix P6009 120 MHz 100X Oscilloscope Probe Teardown

xDevs com site Published 17 December 2015 Repair of SpectraTime LPFRS Rubidium frequency standards and calibration using Trimble 57964-80 GPSDO module

Cheap GPS-disciplined 10 MHz oscillator- updated 5 10 2014 This post is for a c heap GPS-disciplined 10 MHz oscillator It is a work in progress while the links are still active life …

Mar 10 2012· Now THAT s a clock In Hardware on Mar 10 2012 at 00 01 Triggered by a video on EEVblog of a Rubidium frequency standard and its teardown I decided to get one myself These things are available from eBay for around 40 these days as recalls from cellphone towers apparently

Links and resources A project log for Hacking a FE-5680B rubidium reference clock Sold as 1pps only this affordable eBay find is a playground for reverse-engineering with a …

Trimble 57963-80 GPSDO module This module will serve us as primary 10MHz frequency standard and I ll try to calibrate all rubidium modules to match GPSDO output exactly Shielded GPS receiver and 6V power input There is also included brick power supply rated at 6VDC 2 5A output The receiver requires 5 5 V DC ±5 supply voltage

After the repair the instrument s functionality is verified by measuring the output power with a power meter frequency accuracy with a Rubidium frequency counter and the modulation accuracy with a vector signal analyzer Metabo electric can be purchased here