280: Difference between revisions

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Later timing plug-ins like the [[5T3]] include built-in synchronizing circuits that eliminate the need for the countdown units such as the 280.   
Later timing plug-ins like the [[5T3]] include built-in synchronizing circuits that eliminate the need for the countdown units such as the 280.   
Signal connections on the 280 use [[GR-874 connector]]s.  The trigger circuit is built around a 50 mA [[tunnel diode]].


==Manuals==
==Manuals==

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