Megger BMM2000 Series, Руководство пользователя

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Display: Audible:
<5
Ω
continuous bleep
<3k
Ω
short bleep
>3k
Ω
no bleep
Resistance Tests (k
Ω
)
This is a low voltage (5V) low current (25µA) test for sensitive
electronic equipment. It operates in the same way as the
continuity ranges.
1. Set the selector switch to k
Ω
.
2. Connect the test leads.
3. The test will activate automatically.
The k
Ω
range features a range lock facility. To LOCK the k
Ω
range press the key, the LOCK symbol will appear.
To scroll through the available ranges press the key. To
de-select the feature hold the key down.
The resistance range is protected by a high impedance method
and therefore if the instrument is connected to a live circuit the
fuse will not blow as on the insulation, continuity and buzzer
ranges. The instrument will merely indicate the applied over-
voltage.
Diode Testing
This range can also be used for diode testing, the positive
terminal being the source of the test current. The diode
symbol
will appear if the voltage developed across the
terminals is within semi-conductor junction limits. These
features together with the small test current and wide
measurement range(0,01k
Ω
to 10000k
Ω
) make the resistance
range very useful for general purpose testing.
Voltage Tests (V)
If >1V a.c. or d.c. is present at the terminals the measured
voltage is indicated on the display. The voltage display will
function within specification even if the fuse has blown.
If the voltmeter operation is in question, test the voltmeter on a
known source.
1. Set the selector switch to V.
2. Connect the test leads.
3. After a short settling time, the reading will be displayed
automatically.
To view the frequency of the a.c. V being measured press the
key. The frequency will be displayed in the range 16Hz-
460Hz. To view a.c. V press the key again.
Millivolt Tests (mV)
The measured a.c. or d.c. voltage is indicated on the display.
1. Set the selector switch to mV.
2. Select either ac or dc mV using the
key.
3. Connect the test leads.
4. After a short settle time, the reading will be displayed
automatically.
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