Download Manuals, Datasheets, Software and more:



Digital Multimeter

Choose the best Keithley digital multimeter (DMM) for your application

Keithley offers the widest range of bench and system digital multimeters to meet any measurement requirement. This line of digital multimeters (DMMs) addresses the requirements for student labs with basic DMMs and fast and accurate DMMs for component, module, and assembled product manufacturing testing.

If multi-channel measurements greater than ten channels are needed, see our Switching and Data Acquisition Systems.

Also consider Keithley Source Measure Unit (SMU) instruments, with integrated digital multimeter, power supply, current source, and electronic load capabilities.

Benefits of Keithley digital multimeters

Get the following performance benefits of a bench digital multimeter from Keithley:

Digital multimeter FAQs

What is a digital multimeter?

A digital multimeter measures electrical stimuli, including voltage, current, and resistance. It’s a diagnostic tool used by technicians and electrical engineers daily and combines the features of a voltmeter, ammeter, and ohmmeter.

How do digital multimeters work?

Digital multimeters attach to probes, leads, or clamps, which are connected to an electronic device. They then measure the device’s voltage, current, or resistance and use an analog to digital converter to present a value on the display.

How do I choose a digital multimeter?

When it comes to choosing a digital multimeter, there are a number of factors to consider, starting with where you will be using it. You’ll also want to look at accuracy, speed, and the number of channels needed to complete your job. 

How do you use a digital multimeter?

A digital multimeter is very easy to use. When using a benchtop DMM, you select the correct measurement mode, then attach probes, clamps, or leads to both the DMM and the device under test to make a measurement.

What is a digital multimeter used for?

A DMM is often used to verify one of the factors of Ohm’s Law (voltage, current, and resistance). Engineers in the lab and in the field also use DMMs to verify the state of a system or circuit for safety purposes.

What’s the difference between handheld and benchtop digital multimeters?

Handheld digital multimeters, like those manufactured by Fluke, are used by electricians, electrical contractors and HVAC specialists to make measurements and troubleshoot potentially hazardous systems in the field. Benchtop DMMs, like those made by Keithley, are instruments used by electrical and electronic engineers to perform more advanced measurements and gain confidence in their designs. These instruments are extremely precise and have a variety of advanced functionality, including the ability to program automation, slow or speed up measurements to observe low-level or transient signal behavior, and interface with other instruments.

How do I measure current with a digital multimeter?

A digital multimeter measures current by becoming part of a circuit and measuring the current as it passes through the instrument. Learn more about how to break your circuit and take measurements with step-by-step instructions for how to measure current with a digital multimeter.

Digital multimeter safety tips

Digital multimeters are generally safe provided they are used according to the instrument’s instructions and safety best practices are followed. Below are a few tips to ensure your safety when using a digital multimeter.

Digital multimeter resources

Want detailed specifications? Download our Selector Guide or the Comparison Table. Need to step back and learn the basics? Read our blog on how to use and choose a digital multimeter.