C4 LT5 Flashcards
What should you do during a visual inspection of the test leads?
Check insulation for damage
What should you do after visually inspecting the test leads for damage?
Conduct an ohms measurement
How can you ensure the electric reliability of the test leads?
Perform a resistance test with DMM
What reading indicates good condition of the test leads during an ohms measurement?
0.5 ohms or less
How can you test the battery of the DMM?
Battery symbol in display
What should you do if a battery symbol appears in the display of the DMM?
Needs to be replaced
How can you test for any intermittent problems with the DMM leads?
Move and wiggle the leads
How should a digital meter be stored?
Consult manufacturer’s instructions, control humidity, temperature, and dust, use protective case
Why should a meter be calibrated according to the manufacturer’s instructions?
To ensure performance according to specifications
How often should you perform meter calibration?
Once a year
What should you do if a meter’s accuracy is in doubt?
Compare readings with a reliable meter
What should you check if a meter fails to operate?
Battery and fuses
What are the steps to replace a DMM’s battery?
Turn off, disconnect leads, remove screws, replace battery, secure cover
What battery should be used for replacement in a DMM?
One specified by the manufacturer
What should be done after replacing the battery in a DMM?
Replace and secure the back cover
