Following the software is put in, open the software and produce a new task by click on the ISIS button. You need an oscilloscope to evaluate this. Check out YouTube and seek out “are non polarized capacitors polarized” and you will see. about these little, unassuming monoblock power amplifiers from https://audio-amplifier-hearthsto07159.bluxeblog.com/55433032/5-simple-statements-about-dvr-security-cameras-explained