[time-nuts] X72 Rb units, any experience ?

Arthur Dent golgarfrincham at yahoo.com
Tue Aug 23 15:53:08 UTC 2011

I'm using an X72 for the timebase in one of my Philips 6680 counters 
and it works great for that. For trimming I have a 30 turn pot accessable 
on the front where the optional C input would be so I don't have to turn 
the counter around to make adjustments. The X72 is powered 24/7 so 
I don't have to deal with warm-up issues. I tested it by using the counter's 
math function to display the difference between the timebase and the 
10Mhz output from my Thunderbolt at 100 seconds to 5 decimal places 
and it appears to be quite stable. The LPRO may work better but size 
and power requirements were factors with the instrument I was putting 
this into.

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