18
Clamp-on Meter Models 501 and 503
4.6 Resistance Measurement
• Turn the rotary range switch to the
range.
• Insert the red test lead to the red "
+
" input jack and
the black lead to the black "
COM
" input jack.
• Bring the test probe tips into contact with the sample
under test.
WARNING:
Immediately unclamp the meter
from the conductor under test if overload " "
is displayed.
WARNING:
When making a resistance mea-
surement, make sure that the power is off
(dead circuit), and that all capacitors in the
measured circuit are fully discharged.
®
I N S T R U M E N T S
MODEL 501
CLAMP METER
HOLD
H
600V CAT II
300V CAT III
400A
0
10
20
Ω
3 0
0
0
V
V
A
CAT II
600V
OFF
Hz
!
COM
Ω
Содержание 501N
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