The unit of capacitance is the farad (F). Most capacitors are
in the nanofarad to microfarad range. The Meter measures
capacitance by charging the capacitor with a known current
for a known period of time, measuring the resulting voltage,
then calculating the capacitance. The measurement takes
about
1
second per range.
The Meter's capacitance ranges are
4.000nF 40.00nF,
400.0nF, 4.0001F, 40.00pF and 200.01F.
To measure capacitance:
1.
Set the rotary switch to Cap range.
2. Connect the black and red test leads to the COM and Cx
terminals respectively.
3. Connect the test leads to the capacitor being measured
and read the displayed value.
Some tips for measuring capacitance:
The meter may take a few seconds (200pF range. 30
seconds) to stabilize reading. This is normal for high
capacitance measuring.
To improve the accuracy of measurements less than 4nF,
subtract the residual capacitance of the Meter and leads.
3.2.6
Frequency measurement
A
Do not measure Frequency on hlgh voltage
(>250V) to avoid electrical shock hazard andor
I
damage to the instrument.
1.
Set the rotary switch to
Hz
range.
2. Connect the black and red test leads to the COM and Hz
terminals respectively.
3. Connect the test leads across the source or load under
measurement, and read the displayed value.
Note:
3.2.7
Transistor measurement
instrument, before attempting to Insert
transistors for testing, always
be
sure that test
leads have been disconnected from any
measurement circuits.
1.
Set the rotary switch to hFE range.
2.
Determine whether the transistor to be tested is NPN or
PNP type and locate the Emitter, Base and Collector leads.
3.
Insert leads of the transistor into proper holes of the hFE
socket.
4. The meter will show the approx.
hFE value at test condition
of base current
10vA and Vce 2.8V.
3.2.8
Current measurement (with clamp, optional)
A
To avoid electrical shock and/or damage to the
Instrument, do not apply more than
250Vdc or
250Vac nns between the
m
terminal and the
COM terminal.
1
1.
Set the rotary switch to the
m
range.
2. Press
=J-
key to select DCA or ACA measuring mode.
3.
Connect the leads of the clamp to the COM and
terminals of the meter.
4. Read the displayed value. The polarity of the
VQ
terminal
connection will be indicated when making a DCA
measurement.
5.
When only the figure
"OL
"
displayed, it indicates overrange
situation.
In noisy environment, it is preferable to use shield cable for
measuring small signal.
18
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