USER’S MANUAL
PD-185
11/2015 Page
19
4.7 Resistance measurements
CAUTION
Turn off power on the test circuit and discharge all
capacitors before attempting in-circuit resistance
measurements. If an external voltage is present across a
component, it will be impossible to take an accurate
measurement of the resistance of that component.
1.
Insert
the
BLACK
and
RED
test leads into the
COM
and
V
Ω
input terminals respectively.
2.
Set the rotary selector switch to the (
Ω
) position.
3.
Connect the
BLACK
and
RED
test probe tips to the circuit or
device under test, making sure it is de-energized first.
4.
The resistance in the test leads can diminish accuracy on
the lowest (400
Ω
) range. The error is usually 0.1 to 0.2
Ω
for a standard pair of test leads. To determine the error,
short the test leads together and then use the (
REL
)
Relative mode to automatically subtract the lead resistance
from resistance measurements.
4.8 Continuity testing
1.
Select the (
Ω /
/
) position by turning the rotary
selector switch.
2.
Press
SHIFT
until the symbol
appears
on the screen.
3.
Follow steps 1 and 3 as for resistance measurements. An
audible tone will sound for resistance less than
approximately 40
Ω
.
Summary of Contents for PD-185
Page 1: ...MULT METRO DIGITAL DIGITAL MULTIMETER PD 185 0 MI1426...
Page 4: ...MANUAL DE INSTRUCCIONES PD 185...
Page 28: ...MANUAL DE INSTRUCCIONES PD 185 P gina 24 11 2015...
Page 32: ...USER S MANUAL PD 185...
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Page 59: ......
