[volt-nuts] Old HP3458A - SN: 2823A 03939

Mike S mikes at flatsurface.com
Wed Oct 8 06:32:57 EDT 2014

On 10/8/2014 4:23 AM, acbern at gmx.de wrote:
> the EPROMs are in sockets, no soldering needed.
> but again, buying a precision instrument but reprogramming cal data that is years old does not make any sense.
> unless of course if you are just a collector and do not use its accuracy.

It makes perfect sense, for the same reason that HP doesn't touch the 
cal if it's in spec - for tracking/characterization. By keeping the same 
cal constants, if and when he does send it in for calibration he'll be 
able to know how much it drifted since it was last cal'd (25 years ago?).


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