Table of Contents 673 Electronic & Computer Controlled Systems Objectives Final Student Performances ................................................................ a Course Menu ....................................................................................... 3 Section 1: Electronic Control Units Section 1 Topics .................................................................................. 5 Electronic Control Units ........................................................................ 6 How ECUs Work ...................................................................................
7 Logic Function .................................................................................. 7 Simple ECU Inputs ................................................................................ 8 Voltage ON/OFF (Switch) Input ........................................................ 9 Variable Voltage Input .................................................................... 10 Variable Resistance Input ............................................................... 11 Pulse Pattern Input ......................................................................... 12 Simple ECU Outputs ...........................................................................
13 Transistors as Switches .................................................................. 13 Pulse Width Modulation ...................................................................... 14 Duty Cycle ........................................................................................... 15 Power-Side Control ......................................................................... 16 Self Diagnosis ..................................................................................... 17 Differences in Self-Diagnosis .......................................................... 17 ECU Memory ......................................................................................
19 Types of ECU Memory ................................................................... 19 Customization ..................................................................................... 20 Initialization ......................................................................................... 21 Why Initialize? ................................................................................. 21 Section 2: Section 2 Topics ................................................................................. 23 Electronic Communication ..................................................................
24 Signals & Waveforms Types of Waveforms ....................................................................... 24 Waveform Measurements ................................................................... 25 Amplitude ........................................................................................ 25 Frequency ....................................................................................... 26 Pulse Width ..................................................................................... 27 Duty Cycle ...................................................................................... 28 Section 3:
Measuring Section 3 Topics ................................................................................. 29 Advanced DVOM Features ................................................................. 30 Signals MIN/MAX Recording ....................................................................... 30 Peak MIN/MAX ............................................................................... 30 Relative Delta ................................................................................. 30 Frequency Measurement ................................................................ 31 Duty Cycle ......................................................................................
31 Demonstration ................................................................................ 33 The Oscilloscope ................................................................................ 34 PC Oscilloscopes ................................................................................ 35 Basic Operation .................................................................................. 36 Oscilloscope Scales ............................................................................ 37 Repair Manual Suggested Scales .................................................. 38 Technical Training i