FORMUbSWRTHYPHASCISPELPRGHDOC h PICP69LINP6Z BOXP6Z dOVLP6Z dSWCL@BlackWhiteRedGreenBlueCyanYellowMagentafSalmonwPeachUBrownellowLight GreenwwwGrey DarkOrangeݙVanillalowGrey LightIDXHIDXDSoftSansdTitleepz,IDXDSoftSansdBlank LinefIDXDSoftSansdLetter HeadergIDXDSoftSans dIndex EntryhTOCH TOCDSoftSansdTitlenz%TOCDSoftSans dBlank LineoTOCDSoftSansdZLevel 1pTOCDSoftSans dZLevel 2qTOCDSoftSerif dLevel 3rTOCDSoftSerif dhLevel 4sTOCDSoftSerif dvLevel 5tTOCDSoftSerif d*Level 6uTOCDSoftSerif dLevel 7vTOCDSoftSerif d8Level 8wIDXPSEC1 PTPAG3pA PRN3KBVtils:APPLICATIONS/FinalWriter/FWFonts/SWOLFonts/Serif/WŬWW~WW { dELX.FormulaText{WPASDSoftSansdDocument TitlePASDSoftSansdSection Namepz??PASDSoftSansdTopic Nameq{??PASDSoftSansdSub Topic 1r|??PASDSoftSansdSub Topic 2s}??PASDSoftSans dBodyPASDSoftSans dIndented BodyTOCP!rOUTPBIBPTOIPENDPDSP2PHHFDASoftSans dSoftSans dPNDASoftSans dSHPP6Z dGRMRStrictly.For Business Writing.For Casual Writing.Custom 1.Custom 2.Custom 3.IDXLConductorsTDINFFCOP3 W62W1 FDTAWorchester Utils:APPLICATIONS/FinalWriter/FWFonts/SWOLFonts/Serif/FDTASoftSansW8W%YW$PWwLWW$oW$WtW_W$PW# W$WtW~GINF ?GINF?hvBlackMagentaGINFh nZ BlackGINF SHD1PW6ZW6дW6PTMainTBDYRULENATTR dCHRSElectronic Servicing yr.1 pt.1ATTR dCHRS ATTR hdCHRS ATTR hdCHRS ATTR dCHRSLecture: 028 - tATTR [dCHRS ATTR hdCHRS ATTR hdCHRS ATTR hdCHRS ATTR hdCHRS Thurs. - 15ATTR hdCHRS - May ATTR hdCHRS- 1997RULEATTR hdCHRSRULEATTR xCHRSCathode Ray OscilloscopeRULEATTR dCHRSRULEATTR dCHRSThe figure above shows a single beam Cathode Ray Oscilloscope. A double beam CRO, blocks A and B will be doubled. The Y input is the signal to be investigated. If its voltage amplitude is too large (to fit in the screen), it is reduced in magnitude by the attenuator (Block A), where as if its magnitude is small, it is amplified by the Y voltage amplifier (block B). These two (A+B) are calibrated in Volts per division (V/div) and have a band width of 20 Mhz (hence a DC, wide band amplifier).RULEATTR dCHRSRULEATTR dCHRSThe time base (block D) is produced by a sawtooth oscillator. The sawtooth output is amplified by the X voltage amplifier (block E). This is calibrated in time per division (time/div). The synchronizing circuit (Block C) generates continuous pulses used to trigger the free running X-time base (D). Two different power supplies are needed, one of low dc voltage (block G) is used to feed the various blocks (B,C,D,E)RULEATTR dCHRSand the other of high voltage (block H) - about 5000V - which is used to feed the cathode ray tube at points p and q. The function of switch S is to give the user the choice of selecting between the CRO internal time base, or the use of an external time base. When the latter is selected, switch S will disconnect the internal time base, and the amplifier input will instead be from an external time base. RMSTRULEATTR dCHRSLMSTRULEATTR dCHRS