Introduction
Two types of signals commonly converted and displayed on a DMM?
What is Rapid electrical pulse signals & Steady state or Slow Changing signals
The 4 main sections of the DMM?
What is Display, buttons, rotary dial and test lead terminals
What are two inspections that should be done to the test leads before using them?
When testing for DC Voltage which rotary dial setting is used?
What is the second setting Volts DC (V with straight line and 3 dashed ones)
What tests should be done on an unpowered circuit or isolated component? (2 of the 3)
What is Resistance, Continuity, and Diode
True of False: DMMs can measure a wide range of signals with accuracy
What is True
Give three of button you can press and 1 word how there functions expand the meter’s capabilities
What is - RANGE, REC, HZ/Duty, REL, FUNCTION, LPF, HOLD
What feature of the meter is used to verify the test leads have no intermittent faults?
What is Continuity
Why would you use the millivolt (mV) setting?
What is if measuring a small voltage (millivolts) this setting will be more accurate than the standard voltage setting.
The threshold resistance value in order for the continuity test to “beep.”
Explain the 2 of the 4 basic operations DMMs help us to perform.
What is
- Convert Electrical Signals into Understandable Values
- Perform highly accurate electrical measurements
- Solve electrical equation calculations
- Enable testing of sensitive electronic circuits
The function of the rotary dial?
What is to select the desired test measurement
For testing the fuses which two terminals should be probed by the red test lead?
What is A and mAuA
THe most common cause of a blown meter fuse?
What is forgetting to remove the test leads from the amperage terminals and then performing a VOLTAGE reading
Two values does the Record feature capture?
What is the MAX and the MIN
Define High Impedance. Why is it important when testing electronic circuits?
What is High impedance is high resistance and limits the amperage draw from an electronic circuit to protect it.
How many test lead terminal ports are there? Name them.
What is 4 – amps, milliamps& micro amps, Com or ground and Volts, ohms and hertz
Values indicate a good fuse?
What is any numeric valve
How can you avoid blowing the meter fuse?
What is REMOVE THE RED TEST LEAD IMMEDIATELY when done performing any amperage test.
This happens when the hold button is pressed
What is the displayed value will be frozen or paused for easy reference.
FINAL JEOPARDY List the good and bad diode test values.
What is
-OL should show on one test of the diode, a numeric value on the other = GOOD Diode.
Bad diodes - no reading (OL) on both sides = OPEN or numeric reading on both sides = SHORT