I believe this is normal. It will do this anytime you connect a probe that
has readout scaling or power up with any connected. My 754C does the same
thing.
Dave Casey
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On Sat, Jun 23, 2018 at 3:49 AM, David Slipper <softfoot@...> wrote:
Every time I power up my 'scope it complains that two (and only two)
probes have changed and "do you want to use the existing cal data or
re-cal".
If I choose to use the existing cal data it works fine, or if I
recalibrate the probe it works fine too but I still get challenged the
next time I power up.
Do I need to "enable write access" to the nvram when I re-cal a probe ??
Or is the nvram failing ??
The 'scope is working fine in all other respects.
Best regards,
Dave
