... frequency and electric arc.2.2 Specification(1) X-ray generator: X-ray tube:Cu target, anode-grounding, fan cooling ... transformer, magnifying, digital counter, air pump , cooling fan , x-ray tube.4.2. The tube housing of orientation unit ... the 13.20.0,and then press the reset key, or you can set the digital switch to the ... 0, if you like then press the reset key. YX-300 x-ray crystal orientation unit