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As in the example below, we want to measure a 9V battery so the best range would be the 20 V range. If you have an auto-ranging meter you only need to set the function on the dial to VDC or V . AC Voltage Measurement: To measure AC voltage, we place the Red lead into the V Ω port and black lead into the COM port.
- When using a DMM The black lead goes in which port?
- When using current clamps the DMM is set to read what?
- How can a test light be used to test a ground connection?
- When measuring resistance a reading of OL on the DMM indicates <UNK>?
- Why do multimeters have 3 ports?
- What is the 10A port on a multimeter?
- When using a DMM How do you measure resistance?
- Can you use a multimeter as a test light?
- How do I test a ground wire?
- What does OL mean in ohms?
- What does OL mean on a capacitor?
- When testing for <UNK> DMM beeps based on the resistance of the component under test?
When using a DMM The black lead goes in which port?
If you're testing a 12-volt car battery, select the next highest option—20 DCV. Then make sure to connect your test leads to the proper jacks before testing: For voltage testing, plug the red lead in to the port labeled “V.” For this and all multimeter tests, the black lead plugs into the common (COM) port.
When using current clamps the DMM is set to read what?
Current clamps are typically used to read the magnitude of alternating current (AC) and, with additional instrumentation, the phase and waveform can also be measured. Some clamp meters can measure currents of 1000 A and more.
How can a test light be used to test a ground connection?
A test light can be used to check for grounds by attaching the clip of the test light to the positive terminal of the battery or any 12 volt electrical terminal. The tip of the test light can then be used to touch the ground wire. If there is a ground connection, the test light will light.
When measuring resistance a reading of OL on the DMM indicates <UNK>?
Most DMMs measure down to 0.1 Ω, and some measure as high as 300 MΩ (300,000,000 ohms). Infinite resistance (open circuit) is read as “OL” on the Fluke meter display, and means the resistance is greater than the meter can measure.
Why do multimeters have 3 ports?
Your multimeter will also have two or three ports for plugging in the probes (pictured above): The COM port stands for “Common”, and the black probe will always plug into this port. The VΩmA port (sometimes denoted as mAVΩ) is simply an acronym for voltage, resistance, and current (in milliamps).
What is the 10A port on a multimeter?
10A is the special port used when measuring large currents (greater than 200mA). mAVΩ is the port that the red probe is conventionally plugged in to. This port allows the measurement of current (up to 200mA), voltage (V), and resistance (Ω).
When using a DMM How do you measure resistance?
To perform a measurement with a DMM simply connect V+ to one end of the resistor and V - to the other end and set the DMM to measure resistance. The DMM supplies a constant current source to the resistor and the meter measures the voltage across it, the voltage being proportional to the resistance.
Can you use a multimeter as a test light?
If you don't happen to have a working bulb handy, you can use a light socket tester or test the fixture with a multimeter. ... The first test is a voltage test, which you perform with the multimeter set to measure AC voltage in the 200-volt range.
How do I test a ground wire?
Touch one probe of the multimeter to the ground wire and touch one probe to the ground wire electrical post. Because your multimeter is now functioning an an ammeter, it will register any current that is flowing between the post and the wire. A correctly grounded wire will show zero voltage.
What does OL mean in ohms?
If you're ohming something and it reads “OL” then your loop is open, in other words the path is not continuous (broken/separated) If you're in the voltage setting and it reads “OL” then the voltage you're measuring is too high for your meter to read.
What does OL mean on a capacitor?
Wait for the result.
An "OL" or "overload" reading means the capacitance is too high for the multimeter to measure. Set the multimeter to a higher range if possible. This result can also mean the capacitor has shorted. An auto-ranging multimeter will test the lowest range first, then increase if it hits an overload.
When testing for <UNK> DMM beeps based on the resistance of the component under test?
When testing for continuity, a multimeter beeps based on the resistance of the component being tested. That resistance is determined by the range setting of the multimeter. Examples: If the range is set to 400.0 Ω, a multimeter typically beeps if the component has a resistance of 40 Ω or less.
