... high frequency and electric arc.2.2 Specification(1) X-ray generator: X-ray tube:Cu target, anode-grounding, fan cooling;Tube voltage ... shutter of X-ray , there is X-ray penetrates. In order to check whether there is X ray that penetrates, you can adopt the fluorescence board ... or through the partly display of the counter and uA meterUnder the condition of the X-ray penetrates ...