Fluke 125B ScopeMeter Oscilloscope | 40 MHz Handheld Oscilloscope

AUD $4,600.00 .( AUD $5,060.00 inc. GST )

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    FLUKE 125B handheld oscilloscope has a 40 MHz bandwidth, this oscilloscope is ideal for troubleshooting and maintenance of industrial electrical and electro-mechanical equipment.

    The 125B combines an oscilloscope, a multimeter, and a high-speed recorder.

    • Dual input digital oscilloscope and multimeter in a ScopeMeter® test tool
    • 40 MHz oscilloscope bandwidth
    • Features Connect-and-View™ trigger simplicity for hands-off operation
    • Includes IntellaSet™ technology to automatically and intelligently adjust numerical readout based on measured signal
    • Provides a dual-input waveform and meter reading recorder for trending data over extended periods

    PDF download  Fluke 120B Datasheet

    Fluke 120B series, 40MHz, 2-channel scopemeter is a compact and rugged scopemeter that combines oscilloscope, multimeter, and high-speed recorder into one user-friendly instrument for
    industrial electrical and electro-mechanical equipment troubleshooting and maintenance applications. Further collaboration, data analysis, and archive of critical test information are made possible through integration with Fluke connect and Fluke View for scopemeter software.

    With the Fluke 125B, you can measure scope cursors, power, harmonics, and bus health.


    • Dual-input digital oscilloscope and multimeter
    • 40 MHz oscilloscope bandwidth
    • Two 5000-count True RMS digital multimeters
    • Connect-and-View™ trigger simplicity for hands-off operation
    • IntellaSet™ technology automatically and intelligently adjusts numerical readout based on the measured signal
    • Dual-input waveform and meter reading recorder for trending data over extended periods
    • Recorder Event Detect captures elusive intermittent signals on repetitive waveforms up to 4 kHz
    • Shielded test leads for oscilloscope, resistance and continuity measurements
    • Resistance, continuity, diode and capacitance meter measurements
    • Power measurements (W, VA, VAR, PF, DPF, Hz)
    • Voltage, current and power harmonics
    • Check Industrial networks with BusHealth physical layer tests against defined reference levels
    • Save or recall data and instrument setups
    • Store instrument setups defined by a test sequence for routine maintenance or most often used test procedures
    • External optically isolated USB interface to transfer, archive and analyze scope or meter data
    • Optional WiFi adapter connected to internal USB port to wirelessly transfer information to the PC, laptop or Fluke Connect® mobile app
    • FlukeView® ScopeMeter® Software for Windows®
    • Rugged design to withstand 3g Vibration, 30g shock, and rated IP51 according to EN/IEC60529
    • Highest safety rating in the industry: safety rated for CAT IV 600 V
    Weight 2 kg


    Oscilloscope mode
    Frequency response – dc coupled Without probes and test leads (with BB120) 123B: dc to 20 MHz (-3 dB)
    124B and 125B: dc to 40 MHz (-3 dB)
    With STL120-IV 1:1 shielded test leads DC to 12.5 MHz (-3 dB) / dc to 20 MHz (-6 dB)
    With VP41 10:1 Probe 123B: dc to 20MHz (-3 dB)
    124B and 125B: dc to 40 MHz (-3 dB)
    Frequency response – ac coupled (lf roll off) Without probes and test leads <10 Hz (-3 dB)
    With STL120-IV 1:1 shielded test leads <10 Hz (-3 dB)
    With VP41 10:1 Probe <10 Hz (-3 dB)
    Rise time, excluding probes,
    test leads
    123B <17.5 ns
    124B and 125B <8.75 ns
    Input impedance Without probes and test leads 1 MΩ//20 pF
    With BB120 1 MΩ//24 pF
    With STL120-IV 1:1 shielded test leads 1 MΩ//230 pF
    With VP41 10:1 Probe 5 MΩ//15.5 pF
    Sensitivity 5 mV to 200 V/div
    Analog bandwidth limiter 10 kHz
    Display modes A, -A, B, -B
    Max. input voltage A and B Direct, with test leads, or with VP41 Probe 600 Vrms Cat IV, 750 Vrms maximum voltage.
    With BB120 600 Vrms
    Max. floating voltage, from any terminal to ground 600 Vrms Cat IV, 750 Vrms up to 400Hz
    Scope modes Normal, Single, Roll
    Ranges (normal) Equivalent sampling 123B: 20 ns to 500 ns/div,
    124B and 125B: 10 ns to 500 ns/div
    Real time sampling 1 μs to 5 s/div
    Single (real time) 1 μs to 5 s/div
    Roll (real time) 1s to 60 s/div
    Sampling rate (for both channels simultaneously) Equivalent sampling (repetitive signals) Up to 4 GS/s
    Real time sampling 1 μs to 60 s/div 40 MS/s


    Screen update Free run, on trigger
    Source A, B
    Sensitivity A and B @ DC to 5 MHz 0.5 divisions or 5 mV
    @ 40 MHz 123B: 4 divisions
    124B and 125B: 1.5 divisions
    @ 60 MHz 123B: N/A
    124B and 125B: 4 divisions
    Slope Positive, negative


    Advanced scope functions
    Display modes Normal Captures up to 25 ns glitches and displays analog-like persistence waveform
    Smooth Suppresses noise from a waveform
    Glitch off Does not capture glitches between samples
    Envelope Records and displays the minimum and maximum of waveforms over time
    Auto set (Connect-and-View™) Continuous fully automatic adjustments of amplitude, time base, trigger levels, trigger gap, and hold-off. Manual override by user adjustment of amplitude, time base, or trigger level.


    Dual input meter
    The accuracy of all measurements is within ±(% of reading + number of counts) from 18 °C to 28 °C.
    Add 0.1x (specific accuracy) for each °C below 18 °C or above 28 °C. For voltage measurements with 10:1 probe, add probe  uncertainty +1%. More than one waveform period must be visible on the screen.


    Input A and input B
    DC voltage (VDC)
    Ranges 500 mV, 5 V, 50 V, 500 V, 750 V
    Accuracy ±(0.5% +5 counts)
    Common mode rejection (CMRR) >100 dB @ dc, >60 dB @ 50, 60, or 400 Hz
    Full scale reading 5000 counts
    True-rms voltages (V ac and V ac+dc)
    Ranges 500 mV, 5 V, 50 V, 500 V, 750 V
    Accuracy for 5% to 100% of range (DC coupled) DC to 60 Hz (V ac+dc) ±(1% +10 counts)
    1 Hz to 60 Hz (V ac) ±(1% +10 counts)
    Accuracy for 5% to 100% of range (AC or dc coupled) 60 Hz to 20 kHz ±(2.5% +15 counts)
    DC rejection (only VAC) >50 dB
    Common mode rejection (CMRR) >100 dB @ dc
    >60 dB @ 50, 60, or 400 Hz
    Full scale reading 5000 counts, reading is independent of any signal crest factor.
    Modes Max peak, Min peak, or pk-to-pk
    Ranges 500 mV, 5 V, 50 V, 500 V, 2200 V
    Accuracy Accuracy Max peak or Min peak 5% of full scale
    Accuracy Peak-to-Peak 10% of full scale
    Full scale reading 500 counts
    Frequency (Hz)
    Ranges 123B: 1 Hz, 10 Hz, 100 Hz, 1 kHz, 10 kHz, 100 kHz,1 MHz, 10 MHz, and 50 MHz
    124B and 125B: 1 Hz, 10 Hz, 100 Hz, 1 kHz, 10 kHz, 100 kHz, 1 MHz, 10 MHz, and 70 MHz
    Frequency range 15 Hz (1 Hz) to 50 MHz in continuous autoset
    Accuracy @1 Hz to 1 MHz ±(0.5% +2 counts)
    Full scale reading 10,000 counts
    Max reading 50.00 kRPM
    Accuracy ±(0.5% +2 counts)
    Duty cycle (PULSE)
    Range 2% to 98%
    Frequency range 15 Hz (1 Hz) to 30 MHz in continuous autoset
    Pulse width (PULSE)
    Frequency range 15 Hz (1 Hz) to 30 MHz in continuous autoset
    Full scale reading 1000 counts
    Amperes (AMP)
    With current clamp Ranges Same as V dc, V ac, V ac+dc, or PEAK
    Scale factors 0.1 mV/A, 1 mV/A, 10 mV/A, 100 mV/A, 400 mV/A, 1 V/A, 10 mV/mA
    Accuracy Same as V dc, V ac, V ac+dc, or PEAK (add current clamp uncertainty)
    Temperature (TEMP) with optional temperature probe
    Range 200 °C/div (200 °F/div)
    Scale factor 1 mV/°C and 1 mV/°F
    Accuracy As V dc (add temp. probe uncertainty)
    Decibel (dB)
    0 dBV 1 V
    0 dBm (600 Ω /50 Ω) 1 mW referenced to 600 Ω or 50 Ω
    dB on V dc, V ac, or Vac+dc
    Full scale reading 1000 counts
    Crest factor (CREST)
    Range 1 to 10
    Full scale reading 90 Counts
    Modes A to B, B to A
    Range 0 to 359 degrees
    Resolution 1 degree
    Power (125B only)
    Configurations 1 phase / 3 phase 3 conductor balanced loads (3 phase: fundamental component only, AUTOSET mode only)
    Power factor (PF) Ratio between watts and VA range – 0.00 to 1.00
    Watt RMS reading of multiplying corresponding samples of input A (volts) and input B (amperes)
    Full scale reading 999 counts
    VA Vrms x Arms
    Full scale reading 999 counts
    VA reactive (var) √((VA)2-W2)
    Full scale reading 999 counts
    Purpose To measure on pulse width modulated signals, like motor drive inverter outputs
    Principle Readings show the effective voltage based on the average value of samples over a whole number of periods of the fundamental frequency
    Accuracy As Vrms for sinewave signals


    Input A to common
    Ohm (Ω)
    Ranges 123B and 124B 500 Ω , 5 kΩ, 50 kΩ, 500 kΩ, 5 MΩ, 30 MΩ
    125B 50 Ω, 500 Ω , 5 kΩ, 50 kΩ, 500 kΩ, 5 MΩ, 30 MΩ
    Accuracy ±(0.6% + 5 counts) 50 Ω ±(2% + 20 counts)
    Full scale reading 50 Ω to 5 MΩ – 5000 counts, 30 MΩ – 3000 counts
    Measurement current 0.5 mA to 50 nA, decreases with increasing ranges
    Open circuit voltage <4 V
    Continuity (Cont)
    Beep <(30 Ω ±5 Ω) in 50 Ω range
    Measurement current 0.5 mA
    Detection of shorts of ≥1 ms
    Measurement voltage @0.5 mA >2.8 V
    @open circuit <4 V
    Measurement current 0.5 mA
    Polarity + on input A, – on COM
    Capacitance (CAP)
    Ranges 50 nF, 500 nF, 5 μF, 50 μF, 500 μF
    Full scale reading 5000 counts
    Measurement current 500 nA to 0.5 mA, increases with increasing ranges


    Advanced meter functions
    Zero Set Set actual value to reference
    AutoHold (on A) Captures and freezes a stable measurement result. Beeps when stable. AutoHold works on the main meter reading, with thresholds of 1 Vpp for AC signals and 100 mV for DC signals.
    Fixed decimal point Activated by using attenuation keys


    Cursor Readout (124B and 125B)
    Sources A, B
    Single vertical line Average, min and max readout
    Average, min, max and time from start of readout (in ROLL mode; instrument in HOLD)
    Min, max and time from start of readout (in RECORDER mode; instrument in HOLD)
    Harmonics values in POWER QUALITY mode.
    Dual vertical lines Peak-peak, time distance and reciprocal time distance readout
    Average, min, max and time distance readout (in ROLL mode; instrument in HOLD)
    Dual horizontal lines High, low and peak-peak readout
    Rise or fall time Transition time, 0%-level and 100%-level readout (manual or auto leveling; auto leveling only
    possible in single channel mode)
    Accuracy As oscilloscope accuracy


    The recorder captures meter readings in Meter Recorder mode or continuously captures waveform samples in Scope Recorder mode. The information is stored on internal memory or on optional SD card (with the 125B or 124B).
    The results are displayed as Chart recorder display that plots a graph of min and max values of Meter measurements over time or as a waveform recorder display that plots all the captured samples.
    Meter readings
    Measurement Speed Maximum 2 measurement/s
    Record Size (min, max, average) 2 M readings for 1 channel
    Recorded Time Span 2 weeks
    Maximum number of events 1024
    Waveform record
    Maximum sample rate 400 K sample/s
    Size Internal memory 400 M samples Recorded Time
    Span internal memory 15 minutes at 500 μs/div
    11 hours at 20 ms/div
    Record Size SD card 1.5 G samples
    Recorded Time Span SD card 11 hours at 500 μs/div
    14 days at 20 ms/div
    Maximum number of events 64


    Power Quality (125B only)
    Readings Watt, VA, var, PF, DPF, Hz
    Watt, VA, var ranges (auto) 250 W to 250 MW, 625 MW, 1.56 GW
    When selected: total (% r) ±(2% + 6 counts)
    When selected: fundamental (% f) ±(4% + 4 counts)
    DPF 0.00 to 1.00
    PF 0.00 to 1.00, ±0.04
    Frequency range 10.0 Hz to 15.0 kHz
    40.0 Hz to 70.0 Hz
    Number of Harmonics DC to 51
    Readings / Cursor readings
    (fundamental 40 Hz to 70 Hz)
    Vrms / Arms /Watt Each harmonic from fundamental maybe selected for individual readings
    Includes frequency of fundamental, phase Angle and K-factor (in Amp and Watt)


    BusHealth tester (Fluke 125B only)
    Type Subtype Protocol
    AS-i NEN-EN50295
    CAN ISO-11898
    Interbus S RS-422 EIA-422
    Modbus RS-232 RS-232/EIA-232
    RS-485 RS-485/EIA-485
    Foundation Fieldbus H1 61158 type 1, 31.25 kBit
    Profibus DP EIA-485
    PA 61158 type 1


    Display Type 5.7-inch color active matrix TFT
    Resolution 640 x 480 pixels
    Waveform Display Vertical 10 div of 40 pixels
    Horizontal 12 div of 40 pixels
    Power External Via Power Adapter BC430
    Input voltage 10 V DC to 21 V DC
    Power consumption 5 W typical
    Input connector 5 mm jack
    Internal Via Battery Pack BP290
    Battery power Rechargeable Li-Ion 10.8 V
    Operating time 7 hours with 50% backlight brightness
    Charging time 4 hours with test tool off,  7 hours with test tool on
    Allowable ambient temp 0 to 40 °C (32 to 104 °F) during charging
    Memory Internal memory can store 20 data sets  (screen waveform and setup) Micro SD card slot with optional SD card  (max size of 32 GB)
    Mechanical Size 259 x 132 x 55 mm
    (10.2 x 5.2 x 2.15 in)
    Weight 1.4 kg (3.2 lb) including battery pack
    Interface Optically isolated Transfer screen copies (bitmaps), settings and data
    USB to PC/laptop OC4USB optically isolated USB adapter/cable, (optional), using FlukeView® software for Windows®.
    Optional WiFi adapter Fast transfer of screen copies (bitmaps), settings and data to PC/laptop, tablet, smartphone, etc. A USB port is provided for attaching the WiFi dongle. Do not use the USB port with a cable for safety reasons.


    Environmental MIL-PRF-28800F, Class 2
    Temperature Battery Operation 0 to 40 °C (32 to 104 °F)
    Power Adapter Operation 0 to 50 °C (32 to 122 °F)
    Storage -20 to 60 °C (-4 to 140 °F)
    Humidity (Operating) @ 0 to 10 °C (32 to 50 °F) Non-condensing
    @ 10 to 30 °C (50 to 86 °F) 95%
    @ 30 to 40 °C (86 to 104 °F) 75%
    @ 40 to 50 °C (104 to 122 °F) 45%
    Storage @ -20 to 60 °C (-4 to 140 °F) Non-condensing
    Altitude Operating at 3 km (10,000 feet) CAT III 600 V
    Operating at 2 km (6,600 feet) CAT IV 600 V
    Storage 12 km (40,000 feet)
    EMC electromagnetic compatibility International IEC 61326-1: Industrial, CISPR 11:  Group 1, Class A
    Korea (KCC) Class A Equipment (Industrial Broadcasting & Communication Equipment)
    USA (FCC) 47 CFR 15 subpart B. This product is considered an exempt device per clause 15.103.
    Wireless radio with adapter Frequency range 2412 MHz to 2462 MHz
    Output power <100 mW
    Enclosure protection IP51, ref: EN/IEC60529
    Safety General IEC 61010-1: Pollution Degree 2
    Measurement IEC 61010-2-033: CAT IV 600 V/CAT III 750 V
    Max. input voltage input A and B Direct on input or with leads 600 Vrms CAT IV for derating
    With Banana-to-BNC Adapter BB120 600 Vrms for derating
    Max. floating voltage from any terminal to ground 600 Vrms Cat IV, 750 Vrms up to 400 Hz


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