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OPERATING INSTRUCTIONS
WARNING
•
To avoid electric shock hazard and/or damage to the instrument, do not measure voltages that
might exceed 600V above earth ground.
•
Before the use of instrument, inspect test leads, connectors and probes for cracks, breaks, or
crazes in the insulation.
•
Dangerous voltages may be present at the input terminals and may not be displayed.
•
To avoid electric shock or damage to the Meter when measuring resistance or continuity in a
circuit, make sure the power to the circuit is turned off and all capacitors are discharged.
DC & AC VOLTAGE MEASUREMENT
1. Connect red test lead to "VΩmA" jack, Black lead to "COM" jack.
2. Set RANGE switch to desired VOLTAGE position, if the voltage to be measured is not known
beforehand, set switch to the highest range and reduce it until satisfactory reading is obtained.
3. Connect test leads to device or circuit being measured.
4. Turn on power of the device or circuit being measured voltage value will appear on Digital Display
along with the voltage polarity.
DC CURRENT MEASUREMENT
1. Red lead to "VΩmA", Black lead to "COM" (for measurements between 200mA and 10A, connect
red lead to "10A" jack with fully depressed.)
2. RANGE switch to desired A position.
3. Open the circuit to be measured, and connect test leads INSERIES with the load in with current is
to measure.
4. Read current value on Digital Display.
5. Additionally, "10A" function is designed for intermittent use only. Maximum contact time of the test
leads with the circuit is 10 seconds, with 15 minutes intermission time between tests.
RESISTANCE MEASUREMENT
1. Red lead to "VΩmA". Black lead to "COM".
2. RANGE switch to desired "Ω" position.
3. If the resistance being measured is connected to a circuit, turn off power and discharge all
capacitors before measurement.
4. Connect test leads to circuit being measured.
5. Read resistance value on Digital Display.
6. At 200Ω range, shorten test lead, one certain digit will be shown on LCD. This resistance is
caused by internal resistance of tested electric circuit (including fuse resistance). So when
measuring resistance, please deduct the result by this certain digit.
DIODE MEASUREMENT
1. Red lead to "VΩmA", Black lead to "COM".
2. RANGE switch to "
3. Connect the red test lead to the anode of the diode to be measured and black test lead to
cathode.
4. The forward voltage drop in mV will be displayed. If the diode is reversed, figure "1" will be
shown.
TRANSISTOR hFE MEASUREMENT
1. RANGE switch to the hFE position, plug the multi-function socket to the COM and "VΩmA"
ternimal.
2. Determine whether the transistor is PNP of NPN type and locate the Emitter, Base and Collector
leads. Insert the leads into the proper holes of the Socket.
3. The meter will display the approximate hFE value at the condition of base current 10μA and
2.8V.
V
CE
TEST SIGNAL USE
1. RANGE switch to "
2. A test signal (50Hz) appears between "VΩmA" and "COM" jack, the output voltage is approx 5V p-p
with 50KΩ impedance
SW-Stahl und Werkzeugvertriebs GmbH
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