[time-nuts] Z3805 vs Z3816/Z3801
Hal Murray
hmurray at megapathdsl.net
Thu Jun 25 19:22:56 UTC 2009
> Finally, a generic question about all 3 of these HP/Agilent/
> Symmetricon devices: I know the PPS spec -isn't- at RS-232 levels,
> however nor is the Garmin GPS-18, and that worked raw for me. Has
> anyone tried just feeding the PPS signal from a 3801/05/16 into the
> DCD pin of a serial port ?
I don't know about the 3805 or 3816, but the 3801 is RS-442 rather than
RS-232. It's all setup to talk RS-232, but you have to take it apart and
shuffle some 0-ohm resistors. While you are in there, you can make a similar
patch for the PPS signal.
http://support.ntp.org/bin/view/Support/ConfiguringHPZ3801ARefclocks
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