Diode Check( ) - Bosch MMD 540H Instruction Manual

MMD 540H Hybrid Multimeter | Meter Functions | 15
Meter Functions – Diode Check (
IMPORTANT: Turn the power OFF to
the test circuit
Ñ
Select the Diode Check "
function with the rotary switch and
mode button.
Insert:
Ñ
Black lead in COM terminal.
Ñ
Red lead in V-Ω-RPM terminal.
Touch the Black test probe to the
negative (-) side of the diode.
Touch the Red test probe to the
positive (+) side of the diode. Reverse
the probes: Black to the positive (+)
side and Red to the negative (-) side.
NOTE: A "good" diode will read low
in one `direction and high in the
other direction when the probes are
reversed (or vice versa).
A defective diode will have the same
reading in both directions or read
between 1.0 to 3.0 V. in both directions.
Diode - to +
.4 to .9V
Good
OL
OL
1.0 to 3.0V
Bad .4 to .9V
OL
.000V
MMD 540H Instruction Manual | Version 1 | February 2008
"
Reverse Probes
+ to -
OL
.4 to .9V
1.0 to 3.0V
OL
.4 to .9V
OL
.000V
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)
Black– Red+
Robert Bosch LLC