[time-nuts] IC for 1 PPS Output
Brooke Clarke
brooke at pacific.net
Fri Apr 7 04:14:29 UTC 2006
Hi:
I've got the TVB 1 PPS PIC circuit working and would like to add an
output IC to drive 50 a couple of Ohm cables.
Need two outputs, the normal 1 PPS and also the 10 kHz output since I
think it would work with the SRS app note for making 1,000 TI
measurements in one second to better see small offsets.
I seem to remember that there may be an internal resistance already in
some chips so putting a 47 or 50 Ohm resistor in series may result in an
impedance above 50 Ohms. Any thoughts?
Thanks,
Brooke Clarke
--
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