Very unlikely I'd have thought - the relay (K104) which selects between
the high and low voltage ranges also selects the I/P resistance. It
wouldn't get used any more than the identical relay |(K102) which
switches when changing between 10 and 100V ranges.
In any case a typical signal relay is rated for 10^8 operations
(typical) with no load, as in this application, which is 32 years at one
operation per second! How often does even a heavily used DVM change
between the 10 and 100V ranges?
On 10/04/2014 20:27, Andreas Jahn wrote:
Hello,
perhaps its just to save the lifetime of the input range selection
relays to at least the warranty time.
Just a guess.
With best regards
Andreas
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