Gary said:
>I saw somewhere that the meter resistance is supposed to be 1400 ohms. The
ones I have measure 1399, 1406 and 1393 ohms.
The 1399 ohm meter reads about 10% low with 30 microamps thru it.
The 1406 ohm meter reads about 5% low with 30 micromaps thru it.
The other meter is way out in left field.
In one meter that I opened up it had a 200 ohm resistor in series with the
movement.<
My figure came partly from memory of that which I measured, but there is also
the question of the measurement uncertainty, as I haven't given the DVM a full
calibration for several years - which I ought to do.
73
Peter G3RZP
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