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Model 88 V
Users Manual
ii
Measuring Duty Cycle............................................................................................... 29
Measuring Pulse Width ............................................................................................. 30
Bar Graph ...................................................................................................................... 30
Zoom Mode (Power Up Option Only)........................................................................ 30
Uses for the Zoom Mode........................................................................................... 30
HiRes Mode ................................................................................................................... 31
MIN MAX Recording Mode ............................................................................................ 31
Smooth Feature (Power Up Option Only) ...................................................................... 32
AutoHOLD
Mode ........................................................................................................... 34
Relative Mode................................................................................................................ 34
Using the Meter for Automotive Applications ................................................................. 34
Measuring RPM ........................................................................................................ 35
Testing MAP or BP/MAP Sensors with Frequency Output........................................ 38
Measuring Internal Resistance of an Ignition Coil ..................................................... 40
Measuring Pulse Width on a Port Fuel Injector ......................................................... 42
Testing Ripple Voltage on an Alternator.................................................................... 44
Measuring Voltages on a Typical Oxygen Sensor .................................................... 46
Measuring Starter Circuit Voltage Drop..................................................................... 48
Testing the Throttle Position Sensor Voltage ............................................................ 50
Testing the Throttle Position Sensor Resistance ...................................................... 50
Isolating a Circuit Causing a Current Drain ............................................................... 52
Measuring System Voltage ....................................................................................... 54
Testing for Continuity in a Switch.............................................................................. 56
Maintenance .................................................................................................................. 58
General Maintenance................................................................................................ 58
Testing the Fuse ....................................................................................................... 58
Replacing the Battery................................................................................................ 59
Replacing the Fuses ................................................................................................. 60
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
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