Chapter II
4.6. Continuity test with buzzer
600
V
CAT
I I I
1000A
PEAK
1mS
HOLD
A
V
1000
400
40
40
Hz
REL
750
V
600
V
CAT
II I
1000
V
600V
Set the switch to
.
Connect the red test lead to the "+" terminal and the black to
the "COM" terminal.
Put the touch prods into contact with the circuit to be tested.
If the resistance is less than R < 75 Ω ± 25 Ω, the buzzer will
make a continuous sound.
Note : Always ensure that the circuit is disconnected from the
power supply before measuring continuity! To offset lead
resistance, short circuit the lead touch prods, then press on
Δ
the
REL button.
4.7. Diode test
Set the switch to
Connect the red test lead to
the "+" terminal and the
black test lead to the "COM"
terminal.
Put the red touch prod into
contact
anode and the black prod
600
V CAT
I I I
1000
A
PEAK
1mS
into
HOLD
A
1000
V
400
cathode.
40
Read
Hz
threshold voltage off the
REL
display.
Note: Always ensure that
750
V
600
V
CAT
II I
1000
V
the circuit is disconnected
600V
from
before testing diodes! If the
connection is made back to
front, the display indicates
"OL"
enables
distinguish the anode from
the cathode.
MX 650 / MX 655
600
V
CAT
I I I
1000A
PEAK
1mS
HOLD
A
1000
V
400
Hz
REL
750
V
600
V
CAT
II I
1000
V
600V
.
with
the
diode
contact
with
the
the
value
of
its
the
power
supply
(Overload);
this
the
user
to
25