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Transistor hFE Test
1. Set the selector switch to the hFE position.
2. Determine whether the transistor is NPN or PNP.
3. Locate the emitter (E), base (B) or (C)and collect legs into the correct holes in the socket on the
front panel.
4. The display will read the approximate hFE value at the test condition of base current
10µA VCE 3.2V.
Frequency Measurement
1. Connect the red test lead to the ‘V/
Ω
/F’ jack socket and the black lead to the ‘COM’
jack socket.
2. Set the selector switch to the Hz position and the range button to 20KHz.
3. Connect the test leads to the circuit/source to be measured.
4. The frequency value should now be displayed on the digital display.
Note: Readings can be taken from input voltages above 10Vms, but the accuracy is not
guaranteed. In noisy environments, it is recommended that shielded cables are used for
measuring small signals.
Capacitance Measurement
1. Set the selector switch to the desired setting within the ‘F’ range (nF or µF).
NOTE: The range control mode in capacitance measurement is manual ranging and only two
ranges (326nF, 32.6µF) are provided. If the range control button is used in this function
measurement, decimal points may appear in wrong positions.
2. Before testing the capacitor be sure that the capacitor has been fully discharged.
3. When measuring capacitors with short leads, a testing adaptor has been provided. Insert
the adaptor into the testing sockets, but remember to remove it before selecting another
function, to avoid the risk of an electric shock.
4. Once the capacitor has been placed into the testing sockets, the capacitance value will be
displayed on the digital display.
Continuity Diode Test
1. Connect the red test lead to the V/
Ω
/F jack socket and the black lead to the ‘COM’
jack socket.
2. Set the selector switch to the position.
3. Connect the test leads to the circuit/source to be tested.
4. If continuity exists (i.e. resistance is less than 50
Ω
) the audible buzzer will sound.
Autoranging Feature
1. Ranges for A.C./D.C. voltage, A.C./D.C. amps (µA and mA only), resistance and frequency can
be measured manually or automatically by following this sequence:
a. Set the selector function switch to the required function.
b. Press the red range button until ‘R-H’ is displayed in the top left hand corner of the LCD screen.
c. To change the range, press the red range button until the desired measurement range is
displayed.
d. To turn the autoranging feature to manual, depress and hold the red range button down for
more than three seconds.
Summary of Contents for DMM11
Page 4: ... 3 KNOWYOUR MULTIMETER ...
