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  • Fluke 123/003 Industrial ScopeMeter, 20 MHz Frequency
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Fluke 123/003 Industrial ScopeMeter, 20 MHz Frequency

by Fluke

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  • Handheld unit combines a two-channel digital oscilloscope for viewing electrical signals with a digital multimeter for measuring voltage, resistance, capacitance, frequency, and duty cycle
  • The oscilloscope's real-time sample rate is 25MS/s and record length is 512 points per channel for acquiring waveforms
  • True RMS multimeter provides accurate readings when measuring linear or non-linear loads, regardless of waveform
  • 2.83" monochrome LCD with a backlight for visibility in low light
  • Meets European Standard (EN) safety standard 61010-1 and is rated for CAT III installations to 600V
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Fluke 123/003 Industrial ScopeMeter, 20 MHz Frequency + Fluke C125 Soft Meter Case
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Product Information

Technical Details
Part Number Fluke-123/003
Item Weight3 pounds
Product Dimensions12.4 x 11.1 x 4.6 inches
Item model numberFluke-123/003
Size20 MHz Frequency
Item Package Quantity1
Additional Information
Best Sellers Rank #364,086 in Home Improvement (See top 100)
Shipping Weight5.6 pounds (View shipping rates and policies)
ShippingCurrently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
Date First AvailableSeptember 5, 2007
Warranty & Support
Warranty, Parts: Parts
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Technical Details

  • Brand Name: Fluke
  • Part Number: Fluke-123/003
  • UPC: 095969052177, 013227030545

Product Description

The Fluke ScopeMeter series 120 is a handheld electrical test device that combines a two-channel digital oscilloscope for viewing electrical signals with a true RMS, manual- and auto-ranging digital multimeter on each input for measuring AC and DC voltage to 1,250V, resistance to 50MΩ, capacitance to 500μF, frequency to 50MHz for Fluke 123 models and 70MHz for Fluke 124 models, and duty cycle from 2% to 98%. The oscilloscope has a real-time sample rate of 25MS/s and a record length of 512 points per channel for acquiring waveforms. Automatic and cursor measurement parameters allow an in-depth analysis of waveforms, and edge and video triggers allow isolation of specific signals. The oscilloscope's advanced automatic triggering recognizes signal patterns and automatically optimizes triggering, timebase and amplitude settings. It has an optical port for attaching a Fluke ITP120 probe (sold separately) for external triggering. The 5,000-count, true RMS (root mean square) multimeter provides accurate readings when measuring linear or non-linear loads, regardless of waveform. It has two ranging modes: manual, which allows the user to select the operating range, and auto, which automatically selects the appropriate operating range. The relative function allows a measurement to be set as a reference value and displays subsequent measurements as a positive or negative deviation from that value, the touch-hold mode captures a stable reading, and the data-hold function freezes a reading on the display to aid documentation. A continuity buzzer confirms that the circuit conducts electricity, and a diode check detects whether a circuit’s diodes are working properly. Setups and screen shots—up to 10 for the 20MHz models and 20 for the 40MHz models—can be stored in the internal memory. A TrendPlot chart recorder graphs readings from both the oscilloscope and multimeter functions of the minimum and maximum values over time. The recorder can be programmed from 15 seconds per division over 120 seconds to 2 days per division over 16 days. Additional specifications include a rise time of 17.5ns for the 20MHz models and 8.75ns for the 40MHz models, and various triggering features. The unit has a 2.83" monochrome LCD with a resolution of 240 x 240 pixels for viewing waveforms and measurements, and a backlight for visibility in low light. A multimeter is an electrical testing tool for measuring multiple properties of an electrical circuit to verify proper operation or diagnose problems.

The unit has an optically isolated RS-232 interface for connecting to a compatible printer for direct printing of data or to a PC for data storage. It operates on a rechargeable NiMH battery pack or a 120V, 60Hz AC adapter/charger (both included). When operating on battery power, it automatically shuts down after 30 minutes of non-use to conserve battery life and has a low-battery indicator that signals when the battery needs recharging. It meets European Standard (EN) 61010-1:2001, American National Standards Institute and International Society of Automation (ANSI/ISA) S82.02.01, CAN/CSA (Canadian Standards Association) C22.2 61010-1-04, and UL (Underwriters Laboratories) 61010-1-04 safety standards, and is rated for CAT (category) III installations to 600V, which covers equipment in fixed installations, such as switches in the fixed installation and some industrial equipment that is permanently connected to the fixed installation. It has CE (European Conformity) marking. It comes with a 40MHz high-impedance voltage probe (with Fluke 124 models only), a set of test leads with mini clips and alligator clips, a BNC-to-banana adapter, a rechargeable NiMH battery pack (installed), an AC adapter/battery charger, and a user manual. The Fluke ScopeMeter 120 series is available with and without the SCC120 kit. The kit includes FlukeView CD-ROM software for storing and analyzing data, an RS-232/USB adapter cable for connecting to a PC, and a hard carrying case for storing the unit and its accessories. The software is compatible with Microsoft Windows 2000 and beyond operating systems.

Display2.83" monochrome LCD
Bandwidths available20MHz, 40MHz
Input channelsTwo
Real-time sample rate25MS/s
Record length512 points per channel
Maximum DC voltage measured1,250V
Maximum resistance measured30MΩ
Maximum capacitance measured500μF
Maximum frequency measured50MHz for 20MHz bandwidth models, 70MHz for 40MHz bandwidth models
Installation ratingCAT III, 600V
Standards metEN 61010-1:2001, ANSI/ISA S82.02.01, CAN/CSA C22.2 61010-1-04 and UL 61010-1-04 safety standards; CE marking

H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.

Oscilloscopes are electrical testing devices used to verify the functionality of equipment that generates an electrical signal. Oscilloscopes measure the voltage of an electrical signal over time, and display the measurement as a waveform in a visual graph. The waveform shows the sweeps (or refresh) of voltage on a vertical (Y) axis, and the time on a horizontal (X) axis. Details of a waveform demonstrate the signal over time. Most oscilloscopes have two or four channels for inputting a signal. Some digital oscilloscopes offer more than four channels, allowing channels to be dedicated to specific signals and applications. Bandwidth is the maximum frequency of a signal that an oscilloscope can capture. A constant image will display if a signal is shown at a high frequency. Oscilloscopes may be analog, digital, or mixed signal. An analog oscilloscope directly displays an input signal as a continuous waveform, typically in a luminous phosphor on a cathode ray tube (CRT). A digital oscilloscope converts the input signal into a digital format and reassembles the waveform for display, typically on an LCD. A mixed signal oscilloscope (MSO) displays both analog and digital formats. Some oscilloscopes can display more than one channel and type of measurement simultaneously. Some oscilloscopes can capture waveform signals to memory, and recall them. They may provide real-time intensity grading, and may have the ability to adjust frequency of display. Oscilloscopes can be powered with batteries or electricity, or may have a built-in generator. They are commonly used for testing, measuring, and inspecting in science, engineering, telecommunications, automotive, and electronics applications.

Fluke Corporation manufactures electrical testing tools and software for industrial and commercial applications. The company, founded in 1948, is headquartered in Everett, WA.

What's in the Box?
  • Fluke ScopeMeter series 120 handheld oscilloscope/multimeter
  • 40MHz high-impedance voltage probe (with Fluke 124 models only)
  • Set of test leads with mini clips and alligator clips
  • BNC-to-banana adapter
  • Rechargeable NiMH battery pack (installed)
  • AC adapter/battery charger
  • User manual
  • SCC120 kit (for model with kit)
    • FlukeView software
    • RS-232/USB adapter
    • Hard carrying case

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Most Helpful Customer Reviews

I am using the Fluke 123 scopemeter where I work. First, it is a "Fluke", It is very rugged and well built. I was apprehensive about learning a new piece of test equipment, but once I got started, it was very intuitive to use with the drop down menu. In addition to the waveform on the screen it will read out rms or peak-to-peak, VAC+DC, Hz, duty, pulse, and with both probes hooked up it will read phase shift between the two waveforms, plus a whole lot more. In addition it is a DDM. I am definitely sold on the versatility of this peace of test equipment.
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