Model 88 V
Users Manual
42
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
L
.
3.
Connect the test leads as shown.
4.
Press
G
three times to select Pulse Width. The
display shows ms.
5.
Start the engine. Read the display.
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