2 May
2010
2 May
'10
9:55 a.m.
fine, but what do you have to do to improvise a probe.
the 2216 may have a 30pF capacitance IIRC.
It means the input of the scope has 1 M resistance in
parallel with 22 or 47 pF of capacitance. This means that a
10-1 probe for example would need to be adjustable to
accomodate this input impedance. Probes are usually marked
with what input capacitance range they can drive (The 1M
resistance is standard for all high impedance probes)
Peter Wallace