Fluke 78 User Manual page 33

Insert test leads in the jacks shown.
1
2
Turn rotary switch to continuity test.
3 Press pushbutton for 2 secs.
4 Clip leads to switch as shown.
5
Press brake pedal and listen for tone. If tone sounds,
stoplight switch is good.
TYPICAL STOPLIGHT SWITCH
BRAKE PEDAL
PIVOT POINT
BRAKE PEDAL
is displayed.
_
4
+
FEMALE
CONNECTOR
5
Figure 8. Testing Continuity in a Switch
0
OFF
3
Press for
2 seconds
RED
A
RPM
+
10A
30V
BLACK
Typical Testing Applications
78
AUTOMOTIVE METER
1 2 3 400
V Hz
V Hz
2
RPM
2 1
C F
PRESS
MIN / MAX 1 SEC
Hz 1 2 SEC
V
1
300V 30V
COM
COM
CAT C F
FUSED
mt08f.eps
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