But what those AC
numbers actually are
means nothing. If you
set the DCC track volt-
age with an oscillo-
scope to 15 volts, your
multi-meter may read
anywhere from 9 to
22 volts.
For accurate DCC mea-
surements, I highly
recommend the
RR-AmpMeter shown
in figure 3.
You can build circuitry
to measure DCC.
My friend Marcus
Ammann, from
Australia, has a circuit
on his web site to build your own
is method
drops the DCC voltage by about 1.5 volts, so it is not a good
thing to leave connected all the time. However, it is an inex-
pensive way to build your own DCC current measuring system.
3. The larger your layout, the more
boosters you need
2: Inexpensive digital multi-meter.
2
“When measuring DCC track voltage with
a multi-meter, the actual number you get is
inaccurate, but you can rely on the differ-
ences in values obtained different places
on the layout.”
