You can use the 1 PPS as the long-term GPS timing reference, while allowing the FE-5650A rubidium oscillator to provide the very stable short-term frequency. Conceptually: The key point is…
Hi Andy, I wanted to pass along an operational caution about the FE‑5650A that may not be obvious from normal bench testing. This particular rubidium unit dissipates a very large…
A PLL’s LOCK indication is often mistaken for proof of true synchronization, but in reality it only confirms that the loop is operating within its internal lock window. A rubidium…
Yes — rubidium locking and a PLL are closely related ideas, although the atomic-lock servo is not necessarily a conventional electronic PLL in the narrow sense. Think of it like…
In your FE-5650A rubidium frequency standard, being “locked” means the electronics have successfully tuned the oscillator so that its frequency is being controlled by the rubidium atoms, rather than merely…
The page above is describing one of the most useful ideas in electronics: a Phase-Locked Loop (PLL). The terminology makes it sound considerably more complicated than the basic idea. PLL…
Many manufacturers produce these devices which as cheap and easy to install.
Your instinct is understandable, but there is an important difference: wind chill does not make an ordinary thermometer read a lower temperature than the actual air temperature. It makes your…
A rubidium time source is slightly misnamed: fundamentally it is an extremely stable frequency source. Your FE-5650A, for example, produces a very accurate output such as 10 MHz. Electronics can…
Yes. A small 1420 MHz test transmitter can be a useful way of checking a two-dish interferometer, but there is one important complication: if you walk close to the dishes,…
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