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- Handheld unit combines a two-channel digital oscillo for viewing electrical signals with a digital multimeter for measuring voltage, resistance, capacitance, frequency, and duty cycle.
- The oscillo'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.
The Fluke Meter series 120 is a handheld electrical test
device that combines a two-channel digital oscillo 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 oscillo
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 oscillo'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 s—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 oscillo 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 ( https://images-na.ssl-images-.com/images/G/01/BISS/OscillosMix/FlukeMeter123_124.usermanual.pdf#page=70 ) 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 Meter 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.
Specifications
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Display2.83" monochrome LCDBandwidths available20MHz, 40MHzInput
channelsTwoReal-time sample rate25MS/sRecord length512 points per
channelMaximum DC voltage measured1,250VMaximum resistance
measured30MΩMaximum capacitance measured500μFMaximum frequency
measured50MHz for 20MHz bandwidth models, 70MHz for 40MHz
bandwidth modelsInstallation ratingCAT III, 600VStandards 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.
Oscillos are electrical testing devices used to verify the
functionality of equipment that generates an electrical signal.
Oscillos 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
oscillos have two or four channels for inputting a signal.
Some digital oscillos 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 oscillo can capture. A constant image will display if a
signal is shown at a high frequency. Oscillos may be analog,
digital, or mixed signal. An analog oscillo directly
displays an input signal as a continuous waveform, typically in a
luminous phosphor on a cathode ray tube (CRT). A digital
oscillo converts the input signal into a digital format and
reassembles the waveform for display, typically on an LCD. A
mixed signal oscillo (MSO) displays both analog and digital
formats. Some oscillos can display more than one channel and
type of measurement simultaneously. Some oscillos 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. Oscillos 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?
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* Fluke Meter series 120 handheld oscillo/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
