The OX 7104-CK oscilloscope 12-bit four-isolated-channel 600V Cat III displays up to eight traces on the screen. This all-in-one portable and rugged hand-held instrument features five complementary tools: an oscilloscope, FFT analyzer, TRMS multimeter, harmonic analyzer and a recorder. The unit has both reporting and recording capabilities with an 8000-count display. The four-channel high-speed digital recorder function has sample rates as fast as 800 µs and recording times up to an entire month.