00374nam a2200121Ia 4500100001400000942000700014654002900021245007000050260001900120546001200139999001700151952008400168  aLAB VOLT   cBK  apulse-digital modulation  aPractical electricity & electronics-digital modulation modulation  bLAB VOLTc1987  aENGLISH  c31666d31666  001040708CRCaCRCEbCRCEd2023-03-17l0o p3798r2023-03-17w2023-03-17yBK