[time-nuts] Trimble Thunderbolt 1PPS TTL level?

Pieter Ibelings pieter.ibelings at gmail.com
Fri Aug 29 22:21:43 EDT 2008


Hi All,

I got a Trimble Thunderbold from Ebay and I am having trouble triggering the 
HP 53131A. The 1PPS output shows a 10us  pulse of 1 Volt into a high 
impedance probe. This seems low to me. Should it be 5 volts? Maybe the 
output 74AC04 is toast?

Pieter, N4IP





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