Mastech MS8251C, Руководство по эксплуатации

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4.11 Continuity
4.11.1 In resistance mode, press “ FUNC ” to switch to
continuity mode.
4.11.2 Connect the red test lead to the input jack and the
black test lead to the “COM” jack.
4.11.3 Connect the test leads to the circuit.
4.11.4 If the resistance of the circuit is less than 50
Ω , a
buzzer will sound.
4.12 Diode
4.12.1 In continuity mode, press “ FUNC ” to switch to
diode mode.
4.12.2 Connect the red test lead to the input jack and the
black test lead to the “COM” jack.
4.12.3 Connect the red test lead to the anode (+) and the
black lead to the cathode (-) of the diode.
4.12.4 The meter will display the forward biased voltage
drop across the diode.
4.13 Capacitance
4.13.1 Move the rotary switch to the “
4.13.2 Connect the red test lead to the input jack and the
black test lead to the “
COM ” jack.
4.13.3 Connect the test leads to the circuit/capacitor.
4.13.4 Capacitance value will be displayed.
”position.
4.14 Frequency and Duty Cycle
4.14.1 Move the rotary switch to the “ Hz% ” position.
4.14.2 Connect the red test lead to the input jack and the
black test lead to the “
COM ” jack.
4.14.3 Connect the test leads to the circuit.
4.14.4 The measured frequency and duty cycle will be
displayed simultaneously.
4.15 Current
4.15.1 Remove power to the circuit and discharge all
capacitance.
4.15.2 Move the rotary switch to the appropriate position
(µA, mA or A).
4.15.3 Connect the black test lead to the “
COM ” jack.
If the current to be measured is <400mA, connect
the red test lead to the “
µAmA ” jack.If the current
to be measured is >400mA, connect the red test
lead to the “
10A ” jack.
4.15.4 Break the circuit.Connect the test leads across
the break, with the red lead to the higher voltage
side, and the black lead to the lower voltage side.
4.15.5 Power on the circuit and the current value will be
displayed.If “
OL ” appears on the display, it means
the current exceeds the selected mode.Move the
rotary switch to the next higher position.
5. Maintenance
5.1 Replace Battery
To avoid electrical shock, damage or personal injury,
remove test leads before openning battery cover.
5.1.1 “ ”
. .
Note:
If the low battery symbol appears, the battery
needs to be changed.
5 1 2 Unscrew the battery cover from the back of the
meter and remove the old battery.
5.1.3 Insert a new battery and replace the cover and
tighten it to the meter.
Be sure to note the battery polarity when replacing.
Warning