Mastech MS8265, Инструкция оператора, Страница: 10 / 16

3.2.5 Capacitance measurement
To avoid electrical shock and/or damage to the
instrument, disconnect circuit power and discharge
all high-voltage capacitors before measuring
capacitance. Use the dc voltage function to confirm
that the capacitor is discharged.
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Capacitance is the ability of a component to store an
electrical charge.
The unit of capacitance is the farad (F). Most capacitors
are in the nanofarad to microfarad range.
The Meter's capacitance ranges are 20.000nF, 200.00nF,
2
.
0000F, 20.000F, and 200
.
00F.
To measure capacitance:
1. Set the rotary switch to proper range.
2. Connect the black and red test leads to the
COM
and terminals respectively(or you can measure the
capacitance by using the special Multi-Function
Socket).
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 to stabilize
reading. This is normal for high capacitance
measuring.
• To improve the accuracy of measurements less
than 20nF, subtract the residual capacitance of
the Meter and leads.
3.2.4 Continuity Check
To avoid electrical shock and/or damage to the
instrument, disconnect circuit power and
discharge all high-voltage capacitors before
testing for Continuity.
Continuity is a complete path for current flow.
The beeper sounds if a circuit is complete. These
brief contacts cause the Meter to emit a short beep.
To test for continuity:
1. Set the rotary switch to
range.
2. Press the yellow key twice to activate Continuity
Check.
3. Connect the black and red test leads to the COM
and terminals respectively.
4. Connect the test leads to the resistance in the
circuit being measured.
5. When the test lead to the circuit is below approx.
50Ω, a continuous beeping will indicate it.
Note:
Continuity test is available to check open/short of the
circuit.
Ω