33
UT108/109 OPERATING MANUAL
F. Diode Testing
(see figure 9)
Warning
To avoid possible damage to the Meter and to the device under test, disconnect
circuit power and discharge all high-voltage capacitors before testing diodes and
continuity.
To avoid harm to yourselves, never attempt to input an effective voltage over 60V in DC or
30V in AC.
To test a diode out of a circuit, connect the Meter as follows:
1. Insert the red test lead into the terminal and the black test lead into the
COM
terminal.
2. Set the rotary switch to .
3. For forward voltage drop readings on any semiconductor component, place the red test
lead on the component’s anode and place the black test lead on the component’s
cathode. The polarity of red test lead is “
+
” while black test lead is “
-
“.
4. The measured value shows on the display.
Summary of Contents for UT108
Page 1: ...P N 110401102526 ...
Page 2: ...Operating Manual UT108 109 Handheld Automotive Multi Purpose Meters ...
Page 20: ...UT108 109 OPERATING MANUAL 18 Display Symbols see figure 3 Figure 3 ...
Page 24: ...UT108 109 OPERATING MANUAL 22 Figure 4 ...
Page 26: ...UT108 109 OPERATING MANUAL 24 Figure 5 ...
Page 29: ...27 UT108 109 OPERATING MANUAL Figure 6 ...
Page 34: ...UT108 109 OPERATING MANUAL 32 Figure 8 ...
Page 37: ...35 UT108 109 OPERATING MANUAL Figure 9 ...
Page 39: ...37 UT108 109 OPERATING MANUAL Figure 10 ...
Page 41: ...39 UT108 109 OPERATING MANUAL Figure 11 ...
Page 43: ...41 UT108 109 OPERATING MANUAL Figure 12 ...
Page 45: ...43 UT108 109 OPERATING MANUAL Figure 13 ...
Page 61: ...59 UT108 109 OPERATING MANUAL Figure 16 ...
Page 63: ...61 UT108 109 OPERATING MANUAL Figure 17 ...
Page 65: ...63 UT108 109 OPERATING MANUAL Figure 18 ...
Page 68: ...UT108 109 OPERATING MANUAL 66 Figure 20 ...
Page 76: ...UT108 109 OPERATING MANUAL 74 Figure 24 ...
Page 79: ...77 UT108 109 OPERATING MANUAL Figure 26 Figure 25 ...
Page 93: ...91 UT108 109 OPERATING MANUAL Figure 27 ...
Page 95: ......
