One is NTSC signals that come
One is NTSC signals that come from NTSC-standard DVDs and another type of signal is PAL, which is the output of PAL-standard DVDs. Italy uses PAL video system, while other regions like North America use NTSC video system. If you want to play a DVD from any other region on a DVD player purchased in Italy, you should check for certain video standards.
Electrical Standards in Italy for DVD Players
Most of the regionfree DVD players available in Italy are manufactured to meet the basic electrical specifications like operating at 220-230 volts AC, functioning at 50 Hz frequency. This is different from the standards of North America that has DVD players operating at 110-120 volts at 60 Hz oscillation. DVD players bought from a different zone can be made to play DVDs in Italy by manipulating the voltage requirement using a step down rig and by changing frequency of operation by increasing the power line frequency.
DVDs released in different regions usually do not play on coded DVD players in Italy.
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