Measuring Resistance; Checking For Continuity - General CM660 User Manual

MEASURING RESISTANCE

To avoid electrical shock or damage to the meter
when measuring resistance or continuity in a circuit,
make sure power to the circuit is turned off and all
capacitors are discharged.
(1) Turn the rotary function switch to the
By default, when the switch is initially set to this
position with the test leads not plugged in, the
meter will automatically enter the 60MΩ range,
display O.L (indicating an open circuit) on the
primary readout, and display the term MΩ above
the right end of the bar graph at the bottom of
the LCD.
(2) Plug the red and black test leads into the red and
black jacks at the bottom front of the meter.
(3) Measure the resistance by touching or clipping the
tips of the leads to the desired test points of the
circuit or to the terminals of a component, as
shown below.
RED TEST LEAD
(4) Read the measured resistance on the display. If
the measured resistance value is greater than
60MΩ, O.L will appear on the primary readout.
The meter will take a few seconds to stabilize
when measuring resistances greater than 1MΩ.

CHECKING FOR CONTINUITY

(1) Turn the rotary function switch to the
Press the FUNC/INRUSH button once to select the
continuity check function. If test leads are not
plugged into the meter's front-panel jacks, the
primary readout will show .OL, with the icon of a
continuity beeper (
20
••
Warning
••
) above it.
position.
BLACK TEST LEAD
position.