UD-YUT2820 is domestically unique Omni seal design enables it to resist the damp, sandstorm, dust, and pollution in all sorts of environmental extremes ranging from ocean to desert. The voltage of the impulse generator can be continuously adjusted from 50 volts to 400 volts. The pulse width can be continuously adjusted from 25ns to 1000ns.The bulk memory can store up to 1,000 data sets, including waveforms, curves, and parameters (including the traditional 1,000 channels).