16
3 Design and Function
4. Application:
DC VOLTAGE MEASUREMENT
1. Connect the red test lead to the „V.
Ω
.mA“ jack and the black test lead to the „COM“ jack.
2. Set rotary switch to the desired DCV position. If the voltage to be measured is not known
beforehand, set range switch to the highest measuring range position and then reduce it
until satisfactory resolution has been obtained.
3. Connect the test leads to the source or load being measured.
4. Read voltage value on the LCD display along with the polarity of the red lead connection.
DC CURRENT MEASUREMENT
1. Connect the red test lead to the „V.
Ω
.mA“ jack and the black test lead to the „COM“ jack.
(For measurements between 200mA and 10A, remove red lead to „10A“ jack.)
2. Set the rotary switch to the desired DCA position.
3. Open the circuit in which the current is to be measured and connect the test leads in series
with the circuit.
4. Read current value on the LCD display along with the polarity of red lead connection.
AC VOLTAGE MEASUREMENT
1. Connect the red test lead to the „V.
Ω
.mA“ jack and the black test lead to the „COM“ jack.
2. Set the rotary switch to the desired ACV position.
3. Connect the test leads to the source or load being measured.
4. Read voltage value on the LCD display.
RESISTANCE MEASUREMENT
1. Connect the red test lead to the „V.
Ω
.mA“ jack and the black test lead to the „COM“ jack.
(The polarity of red lead is positive „+“.)
2. Set the rotary switch to the desired „
Ω
“ range position.
3. Connect the test leads to both sides of the resistor to be measured and read the value on
the
display.
4. If the resistance to be measured is connected to a circuit, turn off power and discharge all
capacitors before applying the test probes.
DIODE TEST
1. Connect the red test lead to the „V.
Ω
.mA“ jack and the black test lead to the „COM“ jack.
(The polarity of red lead is positive „+“.)
2. Set the rotary switch to the „
“ position.
3. Connect the red test lead to the anode of the diode to be tested and the black test lead to
the cathode of the diode.
4. The approximate forward voltage drop of the diode will be displayed. If the connection is
reversed only „OL“ will be shown.
