DCC Impulses Column - 2
1: DCC Data – Voltage between the rails with 15 volt track
voltage setting.
1
system and the decoders. This is square-wave data, as shown
in figure 1.
If you measure from a common point like the case ground on
some DCC systems to each rail, you will see half of figure 1, for
example, the signal going from zero to + 7.5 volts.
2. My multi-meter accurately reads my
DCC track voltage
Your multi-meter will not give you accurate readings, due to
the fact that the DCC signal is neither sine-wave AC nor steady
DC, which are the two types of voltage that multi-meters are
designed to measure.
MRH-Mar 2013
