RS PRO 123-1930, Instruction Manual

Page: 7 / 34

10 11
Frequency/ Duty cycle measurement
1. Set the function switch to the “ Hz/DUTY ” position.
2. Press the Hz/DUTY button once to display Duty Cycle %. Pressing the button again
will toggle the display to frequency (Hz).
3. Touch the test probe tips to the circuit under test. Be sure to observe the correct
polarity (red lead to positive, black lead to negative).
4. Read the value on the display.
Non-contact AC voltage measurements
WARNING:
Risk of Electrocution. Before use, always test the Voltage
Detector on a known live circuit to verify proper operation.
WARNING
The following safety information must be observed to ensure maximum personal
safety during the operation of this Instrument.
To avoid electric shock, disconnect the test leads before removing the battery door.
When replacing the instrument batteries, do not mix batteries of different types or
old and new batteries.
Check the battery polarity carefully when inserting the batteries.
To avoid electric shock, do not operate the meter until the battery door is in place
and fastened securely.
Do not short-circuit used batteries, disassemble them, or throw them in a fire. Doing
so may cause the batteries to explode.
Dispose of the used batteries in accordance with local regulations.
1. Touch the probe tip to the hot conductor or insert into the hot side of the electrical
outlet.
2. If AC voltage is present, the detector light will illuminate.
NOTE: The conductors in electrical cord sets are often twisted. For best results, rub the
probe tip along a length of the cord to assure placing the tip in close proximity to the
live conductor.
NOTE: The detector is designed with high sensitivity. Static electricity or other sources
of energy may randomly trip the sensor. This is normal operation.
Flashlight
Press and hold the top button to turn the flashlight on. Release the button to turn the
flashlight off.
Auto power off
The auto off feature will turn the meter off after 15 minutes.
1. Unscrew and remove the bottom cover.
2. Replace old battery with two 1.5V AAA type battery.
3. Replace the bottom cover and secure the screw.
MAINTENANCE & CLEANING
Repairs or servicing not covered in this manual should only be performed by qualified
personnel.
Periodically wipe the case with a dry cloth.Do not use abrasives or solvents.
Pocket Digital Multimeter / English Pocket Digital Multimeter / English