Thompson, Steve wrote:
[...]
The magnetron in my microwave oven cycles at a sub-nanosecond rate. That
does not mean it would be be suitable as a low drift clock source.
<snip>
Would that be because it does not have any missing-beat detection
micro-code (no pun intended) and would as a result post an error
condition (machine check)? Perhaps there is no circuitry to force the
magnetron to lock at a precise frequency (say 1.037 GHz +/- 10KHz)
because the freq drift is (a) not important as long as you stay around
the "assigned" micro-wave freq +/- 1% so that leakage is not a problem?
[...]
I don't know microwave owen design, but I can imagine a device working at -
let's say - 3,5GHz +/- 20%. It can be fully acceptable for the device (like
owen) to work at 4.2GHz as well as 2,8GHz. So, resolution is sub-nanosecond,
but the accuracy is very poor. From the other hand quarts oscillators usually
work at MHz frequency, but the frequency is very accurate and stable over time
(months, years).
--
Radoslaw Skorupka
Lodz, Poland
--
BRE Bank SA
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