FLUKE-125B/NA/S

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

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

Watt, VA, var ranges (auto) When selected: total (% r)

±(2% + 6 counts)

Watt, VA, var ranges (auto) 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 kHz40.0 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

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)

Frequency response - dc coupled

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)

Frequency response - ac coupled (lf roll off)

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 ns124B and 125B <8.75 ns

Input impedance Without probes and test leads

1 MΩ//20 pF

Input impedance With BB120

1 MΩ//24 pF

Input impedance

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.

Max. input voltage A and B With BB120

600 Vrms

Max. floating voltage, from any terminal to ground

600 Vrms Cat IV, 750 Vrms up to 400Hz

Ohm (Ω)

Ranges 123B and 124B

500 Ω , 5 kΩ, 50 kΩ, 500 kΩ, 5 MΩ, 30 MΩ

Ranges 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

Crest factor (CREST)

Range

1 to 10

Full scale reading

90 Counts

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/div11 hours at 20 ms/div

Record Size SD card

1.5 G samples

Recorded Time Span SD card

11 hours at 500 μs/div14 days at 20 ms/div

Maximum number of events

64

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

Pulse width (PULSE)

Frequency range

15 Hz (1 Hz) to 30 MHz in continuous autoset

Full scale reading

1000 counts

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

Phase

Modes

A to B, B to A

Range

0 to 359 degrees

Resolution

1 degree

Advanced scope functions

Display modes Normal

Captures up to 25 ns glitches and displays analog-like persistence waveform

Display modes Smooth

Suppresses noise from a waveform

Display modes Glitch off

Does not capture glitches between samples

Display modes 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.

Continuity (Cont)

Beep

<(30 Ω ±5 Ω) in 50 Ω range

Measurement current

0.5 mA

Detection of shorts of

≥1 ms

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.

Diode

Measurement voltage

@0.5 mA: >2.8 V

Measurement voltage @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

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 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

Amperes (AMP)

With current clamp Ranges

Same as V dc, V ac, V ac+dc, or PEAK

With current clamp Scale factors

0.1 mV/A, 1 mV/A, 10 mV/A, 100 mV/A, 400 mV/A, 1 V/A, 10 mV/mA

With current clamp Accuracy

Same as V dc, V ac, V ac+dc, or PEAK (add current clamp uncertainty)

Range

200 °C/div (200 °F/div)

Scale factor

1 mV/°C and 1 mV/°F

Accuracy

As V dc (add temp. probe uncertainty)

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

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

Modbus RS-485

RS-485/EIA-485

Foundation Fieldbus H1

61158 type 1, 31.25 kBit

Profibus DP

EIA-485

Profibus PA

61158 type 1

Horizontal

Scope modes

Normal, Single, Roll

Ranges (normal)

Equivalent sampling: 123B: 20 ns to 500 ns/div, || Equivalent sampling: 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

Ranges (normal) 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

Environmental

Environmental

MIL-PRF-28800F, Class 2

Temperature Battery Operation

0 to 40 °C (32 to 104 °F)

Temperature Power Adapter Operation

0 to 50 °C (32 to 122 °F)

Temperature 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

Altitude Storage

12 km (40,000 feet)

EMC electromagnetic compatibility International

IEC 61326-1: Industrial, CISPR 11:  Group 1, Class A

EMC electromagnetic compatibility Korea (KCC)

Class A Equipment (Industrial Broadcasting & Communication Equipment)

EMC electromagnetic compatibility 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

Wireless radio with adapter Output power

<100 mW

Enclosure protection

IP51, ref: EN/IEC60529

Safety General

IEC 61010-1: Pollution Degree 2

Safety 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 || Max. floating voltage from any terminal to ground: 600 Vrms Cat IV, 750 Vrms up to 400 Hz

Max. input voltage input A and B With Banana-to-BNC Adapter BB120

600 Vrms for derating

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

RPM

Max reading

50.00 kRPM

Accuracy

±(0.5% +2 counts)

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

Duty cycle (PULSE)

Range

2% to 98%

Frequency range

15 Hz (1 Hz) to 30 MHz in continuous autoset

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 || @ 40 MHz: 124B and 125B: 1.5 divisions || @ 60 MHz: 123B: N/A || @ 60 MHz: 124B and 125B: 4 divisions

Slope

Positive, negative

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

Miscellaneous

Display Type

5.7-inch color active matrix TFT

Display Resolution

640 x 480 pixels

Waveform Display

Vertical: 10 div of 40 pixels

Waveform Display Horizontal

12 div of 40 pixels

Power External

Via Power Adapter BC430

Power Input voltage

10 V DC to 21 V DC

Power Power consumption

5 W typical

Power Input connector

5 mm jack

Power Internal

Via Battery Pack BP290

Power Battery power

Rechargeable Li-Ion 10.8 V

Power

Operating time: 7 hours with 50% backlight brightness || Charging time: 4 hours with test tool off,  7 hours with test tool on

Power 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)

Mechanical Weight

1.4 kg (3.2 lb) including battery pack

Interface Optically isolated

Transfer screen copies (bitmaps), settings and data

Interface USB to PC/laptop

OC4USB optically isolated USB adapter/cable, (optional), using FlukeView® software for Windows®.

Interface 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.

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