TM-87/TM-88
4.3.7. Capacitance
measurement
CAUTION
Before taking capacitance measurements in circuit remove power from the
circuit being tested and discharge all capacitors. Use the short test lead pair
for measurement to reduce the stray capacitance. Before connecting the
test capacitor observe the display, which may have a reading other than
zero every time the range is changed. Subtract this offset reading from the
displayed reading of the test result of a capacitor to obtain the true value.
Connect the test capacitor to the inputs respecting the polarity connections
when required. Due to internal delay time, bargraph it’s no operative in
capacitance measurement.
Fig. 8: Using the instrument for Capacitance measurement
1. Selecting the position
.
2. Insert the test leads into the jacks, the red plug into
HzV
Ωµ
A
jack and black plug
into
COM
jack (see Fig. 8).
3. Connect the red and black test clamps to the capacitor terminals respecting if
necessary the proper polarities. The capacitance value is shown on display.
4. Pressing
the
R/SEL
key to select the correct range or using the Autorange feature
(see paragraph 4.2.4). If the capacitance value under test is unknown, select the
highest range.
5. If the message "
O
.
L
" is displayed the maximum readable value is reached.
6. For HOLD function, Minimum and Maximum value measurement and Relative
measure please refer to paragraph 4.2.
15
Summary of Contents for TM-87
Page 1: ...Autoranging True RMS Multimeter TM 87 TM 88 User s manual HB2TM8700000 ...
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