Velleman DCM97K User manual - page 8
DCM97K v2 GB
7
4.2. Resistance Measurement
1. Connect the red test probe to the "V-
Ω
" terminal and the black test lead to the
"COM" terminal.
2. Place the function switch in the "
Ω
" position and use the "FUN."-key to
select resistance measurement.
3. Make sure that the tested device is not under tension in order to ensure a
correct reading.
4. Connect the test leads to the resistor to be measured. Short the test leads prior
to performing your measurements in order to obtain maximum accuracy when
measuring low resistance values. Memorise the displayed value and, if
necessary, subtract the displayed value from the result of the measurement.
NOTE
1. The device may need a few seconds to produce a stable reading when
performing measurements in the 30M
Ω
-range. This is normal when high
resistances are being measured.
2. The overrange indication "OL" will be displayed if the input is not connected,
e.g. with an open circuit.
4.3. Continuity Test (buzzer)
1. Connect the test probe to the "V-
Ω
" terminal and the black test lead to the
"COM" terminal.
2. Place the function switch in the "
Ω
" position and use the blue "FUN."-
key to select the continuity function.
3. Connect the test probe and the lead to the circuit to be measured. The buzzer
will sound if the resistance of the circuit < 30
Ω
.
4.4. Diode Test
1. Place the function switch in the "
Ω
" position and use the "FUN."-key to
select the diode function.
2. Connect the black test lead to the "COM" terminal and the red probe to the "V-
Ω
" input terminal.
3. Connect the red test probe to the anode and the black lead to the cathode of
the diode. The meter will display the approx. forward voltage of the diode. Only
"OL" will be displayed if the lead connection is reversed.