Hi,
I've been fortunate enough to acquire a HP 115CR Frequency
Divider/Digital Clock - it's electromechanical and I suspect built in
the mid/late 60s - just slightly older than your humble correspondent.
It's similar though not identical to the 115CR shown here
http://www.leapsecond.com/hpclocks/
I'd like to fire it up - given it's age my thought was to use a current
limited 24V bench supply and slowly ramp up the voltage the first time -
would welcome any thoughts on this. I gather from the supporting
documentation for the powersupply it's rated at drawing ~250mA
I've been unable to locate a scan of the owners manual or service manual
online. Have looked at time-nuts archives, leapsecond.com and hparchive
to no avail. There does appear to be a hardcopy available for purchase
- happy to fall back to this if necessary, but any pointers welcome.
My goal ultimately is to have it on display running, synchronised to a
GPS disciplied 10MHz source :)
Any thoughts and feedback welcome - this is my first foray into old
clocks :)
Kind Regards,
Hugh
VK3YYZ/AD5RV
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