[time-nuts] PEMCO 50a Info

Chuck Forsberg WA7KGX N2469R caf at omen.com
Mon Jun 20 09:45:43 UTC 2011


Anyone have info or schematic for this counter?
it has 5 seven segment filament display tubes
plus OVEN and OVER lights.

The logic board uses an oven holding a hc6 type 10 mHz
crystal.  One of the divider chips is a 74s112 so I presume
the counter goes to 50 mHz or so.

I got it for free from a junkbox.  It appears to count
but the time base isn't working - the count just keeps
increasing every time the display updates.

-- 
Chuck Forsberg WA7KGX N2469R     caf at omen.com   www.omen.com
Developer of Industrial ZMODEM(Tm) for Embedded Applications
   Omen Technology Inc      "The High Reliability Software"
10255 NW Old Cornelius Pass Portland OR 97231   503-614-0430




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