4
(2)
When measuring components within circuit that circuit must be switched
off and de-energized before connecting the test leads.
(3)
Do not close (black & red) test leads.
(4)
Instruments used in dusty environments should be stripped and cleaned
periodically.
(5)
Do not leave the instrument exposed to direct heat from the sun for long
periods.
(6)
Before removing the battery and fuse compartment cover, ensure that the
instrument is disconnected with any circuit and the power switch is in the
off position.
(7)
For all measurements, should connect BLACK test lead into “
-
” terminal
and RED test lead into
“+”
terminal.
5. CAPACITANCE(C) MEASURING PROCEDURE
(1) Select the range selector for the maximum expected capacitance.
(2) The power will on when the selector switch away from OFF position.
(3) Check "0" indication: If test range is 200pF, 2nF, 20nF, should check "0"
indication before test.
(4) Observe polarity when connecting polarized capacitors.
(5) Full discharge any capacitors.
(6) Connect the alligator clips to the capacitors leads.
(7) Read the display. The value is direct reading in the electrical unit (pF, nF, uF)
indicated at the selected range switch. If display sho
w “1”, It indicate on
Out-of-Range measurement. If the display indicates one or more leading
zeros, shift to the next lower range scale to improve the resolution of the
measurement.
NOTE:
(a) If the capacitance value is unmarked, start with the 200pF range and keep
increasing until the over-range indication goes off and a reading is
obtained.
(b) A shorted capacitor will read over-range on all ranges. A capacitance with
low voltage leakage will read over range, or a much higher value than
normal. An open capacitor will read zero on all ranges (possibly a few pF
on 200pF range, due to stray capacitance of the instrument).
(c) Measure of very low capacitance should be performed using extremely
