In article , Terry and Tracey <foxcroft@xxxxxxxxxxxxxxxxxxxxxx> wrote
>What type of meter were you using? What resistance did it add to the
>circuit? What was it's minimum accurate measurement?
>
>Foxy
>
>>
>>Anyone heard of a 4Ti with high drain circuits? Seems unlikely to me,
>>since it has all the usual support for the F280 flash etc., which the
>>OM-4 doesn't have. I guess this one might be well out of adjustment,
>>although the test films seemed fine. Any ideas?
>
>
>
AVO M2007, 4 figure digital ammeter on 300uA FS range, quoted accuracy
is +/-10f reading and +/-1 digit - its not mine, borrowed from work
and regularly calibrated. Based on this, accuracy should be
10uA+/-0.2uA. The actual reading jumped around more than this, but
averaged around 10uA.
I did have similar concerns to those you seem to have which is why I got
the OM-4 out to measure it with the same meter.
I think I'll try leaving the OM-4 battery in circuit and compare it with
the OM-4Ti's to see if either of them last longer than a few months.
The OM-4 was serviced a few years ago, but I didn't think they replaced
the circuit, and I expect they would have told me if they had. I might
just be lucky I guess, but it certainly used to drain batteries like it
was going out of fashion.
--
Kennedy
Yes, Socrates himself is particularly missed;
A lovely little thinker, but a bugger when he's pissed.
Python Philosophers (replace 'nospam' with 'kennedym' when replying)
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