Hi,
This is pretty similar to what the 8640B signal generator does. You
can lock the oscillator to the quartz time base via the counter. Then
by changing the counter timebase you can fine tune the frequency. One
caveat is that the counter will not indicate the change as the
generator is locked to the counter. And, probably doesn't have enough
resolution anyway. So to find the 'fine tuned' frequency, one has to
use an external counter.
Szabolcs
DW <wilson2115@...> ezt ¨ªrta (id?pont: 2020. m¨¢rc. 1., V, 22:19):
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To put simply, take a function generator such as a HP 3325B, set the output to 0dBm at 10 Mhz, plug that into the reference input of the signal generator. Then if you want a frequency of 100 Mhz just dial that into the signal generator. If you desire more precision with the frequency than what the signal generator is capable of, just make very slight adjustments to the function frequency on the generator supplying the the reference 10 Mhz.
I would think this could work somewhat however it might not scale linear at the various frequencies set on the signal generator, and the phase noise would suffer. And to determine the actual frequency a frequency counter would be needed.
