Prokit's Industries MT-1620 - Manual (Page 35)

steady the reading when measuring high
capacity.
(When measuring low capacity range under the
open circuit, put down the “REL” to make the
display show “000”, then you might get reading
from it.)
4.15 DIODE TESTING
4.15.1 Connect the black test lead to the COM jack
and the red test lead to the jack.
4.15.2 Set the transform switch at the 
range position.
4.15.3 Put down the "FUNC." transformed at
test.
4.15.4 Connect the red lead to the anode, the
black lead to the cathode of the diode under
testing.
4.15.5 You can get reading from LCD.
NOTE:
 The meter will show the approximate forward
voltage drop of the diode.
 If the lead connection is reversed, only
figure‘0L’will be displayed.
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