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4.1.
MEASURING DC VOLTAGE
4.1.1.
Set the function switch to the V
4.1.2.
Set the range to the desired position. If the magnitude of the voltage to be measured is not known beforehand, set the range switch to
the highest range first and then reduce it range by range until satisfactory resolution is obtained.
4.1.3.
Connect the test leads across the source or circuit to be tested.
4.1.4.
Read the display. The polarity of the red test lead connection will be indicated as well.
NOTE: To avoid electric shock to you or damage to the meter, DO NOT measure a voltage higher than 250V.
4.2.
MEASURING AC VOLTAGE
4.2.1.
Set the function switch to the V
4.2.2.
Set the range switch to 250V
4.2.3.
If the magnitude of the voltage to be measured is not known beforehand, set the range to the highest first and then reduce it until a
satisfactory resolution is obtained.
4.2.4.
Read the display.
NOTE: To avoid electric shock to you or damage to the meter, DO NOT measure a voltage higher than 250V.
4.3.
MEASURING DC CURRENT
4.3.1.
Set the function switch to A
4.3.2.
Set the range switch to the 200mA range position.
4.3.3.
Turn off the circuit to be tested. Then discharge all capacitors.
4.3.4.
Break the circuit path to be tested, then connect the test leads in series with the circuit.
4.3.5.
Turn on the power to the circuit, then read the display. The polarity of the red test lead connection will be indicated as well.
4.4.
MEASURING RESISTANCE
4.4.1.
Set the function switch to
4.4.2.
Set the range switch to the desired resistance measuring range position.
4.4.3.
Connect the test leads across the object to be measured.
4.4.4.
Read the reading on the display.
NOTE:
1. For measurements > 1MΩ, the meter may take a few seconds to stabilise a reading. This is normal for high resistance
measurements.
2. When the test leads are in open circuit state , "1" will be displayed as an over-range indication.
3. Before measurement, disconnect all power to the circuit to be tested and discharge all capacitors thoroughly.
4.5.
DIODE TEST
4.5.1.
Set the function to the
4.5.2.
Set the range switch to the
4.5.3.
Connect the red test lead to the anode of the diode to be tested and the black lead to the cathode of the diode.
4.5.4.
The display shows the approximate forward voltage drop of the diode. If the connection is reversed, "1" will be shown on the display.
4.6.
CONTINUITY TEST
4.6.1.
Set the function switch to the
4.6.2.
Set the range switch to the
4.6.3.
Connect the test leads across the circuit to be tested.
4.6.4.
If the resistance is less than about 30Ω, the built in buzzer will sound.
NOTE: Before test, disconnect all power to the circuit to be tested and discharge all capacitors thoroughly.
5. MAINTENANCE
5.1.
CLEANING
5.1.1.
Wipe the case clean with a damp cloth and mild detergent.
DO NOT use abrasives or solvents.
8
5.2.
BATTERY REpLACEMENT
5.2.1.
When
symbol appears on the display, the batteries are low and need to be replaced immediately.
WARNING! Remove all leads from the circuit under test before opening back cover.
‰
5.2.2.
Remove the screws securing the back cover, refer to fig.1. below.
5.2.3.
Replace the batteries (1.5V button cell LR44 or equivalent). make sure the polarity connections are correct (refer to indication on the
bottom of each cell compartment).
5.2.4.
Refit back cover.
5.3.
FUSE
5.3.1.
The fuse rarely needs to be replaced and will blow as a result of operator error.
WARNING! Remove all leads from the circuit under test before opening back cover.
‰
5.3.2.
Remove screws securing back cover, refer to fig.1, and replace with 250mA/250V, fast, Ø5 x 20mm fuse.
© Jack Sealey Limited
position.
~
position.
or 200V
range position.
position.
position.
position.
position.
position.
position.
Original Language Version
mm18 | Issue:3 (H,F) 07/12/18
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