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Oscilloscopes & Function / Waveform Instruments
Handheld Digital Oscilloscopes
Fluke 123B 2-Channel Industrial ScopeMeter 20MHz Handheld Oscilloscope
Note: there are two versions of this product available. Both kits are identical, apart from the 'S' kit includes a copy of Fluke's ScopeMeter software, a magnetic hanger, soft carrying case and a screen protector.
You can choose which version you'd like using the dropdown box above.
The next-generation of Fluke's original 123 ScopeMeter, the Fluke 123B is a powerful, dual-channel handheld oscilloscope designed for use in industrial electrical, electro-mechanical and maintenance applications.
The Fluke 123B is three instruments in one; it functions as an oscilloscope, powerful digital multimeter and a high-speed recorder, allowing you to get more done with one instrument rather than several.
With the Fluke 123B ScopeMeter, you'll be able to work faster and get all of the data you need quickly to assess what's wrong with a system. Fluke's unique Connect-and-View trigger and setup technology will automatically view related measurements using Fluke IntellaSet technology, allowing you to quickly test without the need to make manual adjustments.
Fluke 120B Series Industrial ScopeMeter® Handheld Oscilloscope Overview
As an oscilloscope, the Fluke 123B has two channels with bandwidth of 20MHz. Using this mode, you'll be able to track two individual signals over a period of time, then record all data directly into the on-board memory recorder for analysis at a later date. A Recorded Event Detect mode will also capture intermittent signals, ensuring that you get a snapshot of everything that's happening with no gaps.
The Fluke 123B has dual built-in digital multimeters included as standard. With these, you can measure resistance, continuity, diode, capacitance, voltage, frequency and more, all without the need to use a separate measuring instrument.
Recording Data with the Fluke 123B
The Fluke 123B stores all of its data directly on the built-in recorder; via USB connection, it's possible to transfer all of this data to PC for further analysis.
To do so on PC, you will require a copy of Fluke's ScopeMeter software. This is included as standard in the 'S' kit, but is not included with the standard kit.
If you don't want to use the software, how about using your phone instead?
The 123B ScopeMeter is Fluke Connect enabled (requires optional WiFi adapter); this allows the ScopeMeter to interface wirelessly with your smartphone or tablet running the Fluke Connect app! With Fluke connect, you can transfer results, share them with others, compare and contrast measurement data, upload to the Fluke Cloud and much, much more.
The Fluke Connect™ Condition Monitoring Software & App
Fluke 123B ScopeMeter Key Features
- Three tools in one - dual-channel oscilloscope and multimeter + a recorder
- 20MHz oscilloscope bandwidth
- 5000 count true-RMS digital multimeters
- Connect-and-View trigger simplicity makes it easier to configure the unit
- IntellaSet technology - automatically and intelligently adjusts numerical readout based on the measured signal
- Dual-input waveform and meter recorder for trending data over extended periods
- Recorder Event Detect - captures elusive intermittent signals on repetitive waveforms up to 4kHz
- Shielded test leads for use in oscilloscope, resistance and continuity measurements
- Measure voltage, resistance, continuity, diode, capacitance, frequency and more with the multimeer
- Save or recall instrument data and test setups
- Store instrument setups defined by a test sequence for routine maintenance or most often used test procedures
- Externally, optically isolated USB interferace for transfer, archive and analyse scope or meter data
- Optional WiFi adapter available to connect to USB port for wireless transfer to PC, laptop or Fluke Connect mobile app
- Use FlukeView ScopeMeter software for Windows to analyse test data, make reports etc (included in S kit only)
- Rugged design - made to withstand high levels of vibration and shock
- Highest safety rating in the industry - CAT IV 600V
- Lithium ion rechargeable batteries with seven hour battery life
What's Included?
The following is included in both the standard and S kits.
- Fluke 123B ScopeMeter
- Shielded Test Leads with Black Ground Leads
- Black Test Lead (For Grounding)
- Hook Clips (Red and Blue)
- Banana-to-BNC Adapters (Black, x1)
- USB Angled Adapter
- WiFi USB Adapter
- Switch Mode Power Supply, Adapter and Battery Charger
- Rechargeable Lithium Ion Battery Pack
The below items are only included in the 'S' kit.
- Soft Carrying Case
- Magnetic Hanger
- FlukeView ScopeMeter Software for Windows
- Screen Protector
Optional Accessories
- STL120-IV Shielded Test Lead Set 600 V CAT IV
- HC120-II Set of 2 hook clips
- BB120-II Set of 2 banana to BNC adapter
- VPS41 Voltage probe set 40MHz 600 V CAT IV
- C120B Soft Carrying Case For 120B Series
- SP120B Screen Protector For 120B Series
- SCC120B Accessory Kit 120B Series
- OC4USB Fluke OC4USB USB Interface Cable
- Fluke 80i 110s Fluke 80i-110s AC/DC CurrentClamp
- Fluke i1000s Fluke i1000s AC Current Probe
- Fluke i1010 Fluke i1010 AC/DC Current Clamp
- Fluke i200s Fluke i200s AC Current Clamp
- Fluke-i3000s Fluke i3000s AC Current Clamp
- Fluke i3000s Flex 24 Fluke i3000s Flex-24 AC Current Clamp, 610 mm (24 in.)
- Fluke i3000s Flex 36 Fluke i3000s Flex-36 AC Current Clamp, 915 mm (36 in.)
- Fluke i30s Fluke i30s AC/DC Current Clamp
- Fluke-i310s Fluke i310s Current Probe
- Fluke i400s Fluke i400s AC Current Clamp
- Fluke i410 Fluke i410 AC/DC Current Clamp
- Fluke i5S Fluke i5S AC Current Clamp
Fluke 120B Series Technical Specifications
| Oscilloscope mode | ||
| Vertical | ||
| 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 | |
| Horizontal | ||
| 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 | |
| Trigger | ||
| 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. | |
| Peak | ||
| 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 | |
| RPM | ||
| 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 | |
| Phase | ||
| 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 | |
| Vpwm | ||
| 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 | |
| Diode | ||
| 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 | |
| Recorder | ||
| 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 | |
| Miscellaneous | ||
| 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 | ||
| 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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Additional Information
| SKU | FLUKE-123B |
|---|---|
| Manufacturer Part Code | 4755671 |
