[Test-Equipment] Selective Voltmeter W&G SPM-15

[J. Forster]

Does it have a sick memory backup battery? Just a guess. I don't know the
instrument.
-John

AdB wrote:

> Hello all,
>
>  I have a Selective Voltmeter made by Wandel & Goltermann, model SPM-15
> It works well, but from time to time during the autocalibration process
> (either
> started manually or automatically), it gives the error code I-202  or
> I-201...
>