Chris,
my vote is for the David Partridge 'time-nuts' frequency divider that
was discussed and optimised here in detail some time ago.
It divides everything you might need from the 10 MHz input. There are
separate outputs for 10 MHz, 5 MHz, 1 MHz, and one that can be
configured for 100 kHz / 10 kHz / 1 kHz / 100 Hz / 10 Hz / 1 Hz.
I think David might still have some populated boards.
Adrian
Chris Wilson schrieb:
24/07/2012 13:14
My Racal Dana 9908 can take a 1 Mhz external reference. Inputting my
Thunderbolt at 10 MHz works, but shifts the decimal point over. I am
not sure if this has any other detrimental effects as to accuracy or
other? What's the easiest way to have a 1 MHz reference from the
Thunderbolt for this timer / counter please, yet retaining 10 Mhz for
my other devices that want a 10MHz reference signal? Thanks.
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