Measuring Pulse Width On A Port Fuel Injector - Fluke 88 V User Manual

Model 88 V
Users Manual

Measuring Pulse Width on a Port Fuel Injector

In Pulse Width (and Duty Cycle), the meter defaults to (-)
trigger slope; (time signal is low). Press E
(± TRIGGER) to toggle between (±) trigger slopes. The
slope is indicated by the + or - sign next to "Trig" in the lower-
left corner of the display.
To measure pulse width on most port fuel injectors:
1. Insert test leads in the input terminals shown in Figure
12.
2. Set the rotary switch to
3. Connect the test leads as shown.
Press G three times to select Pulse Width. The
4.
display shows ms.
5. Start the engine. Read the display.
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