[time-nuts] pulse height

[SAIDJACK at aol.com]

Didier,
 
Oh, ok that makes sense, but that is a non-standard output, so not sure  
that you want to use such an output as a sample case for generic applications. 
 Alternatively maybe rename the page to "Trimble CMOS-output Coax Cable 
Impedance  Matching" to make that clear.
 
It would be better to put a 45 Ohms series resistor in that system to give  
you a 50 Ohms standard output, and redo the tests.
 
BTW: we have had to put up with that (in my opinion) stupid output  
impedance, on our Mini-JLT boards we are also driving the 1PPS with very low  
impedance to be compatible to the discontinued Mini-T.
 
I wish Trimble had heard of incident-wave switching when they designed all  
of their units, and used a proper 50 Ohms output impedance.
 
bye,
Said
 
 
In a message dated 11/26/2012 11:12:32 Pacific Standard Time,  
shalimr9 at gmail.com writes:

Said, in  the text I indicated the source was not a 50 ohm terminated 
signal generator,  but the 1 pps output of a Thunderbolt with about 5 ohm 
impedance, hence the  ringing.

Didier