Fluke 125B Industrial ScopeMeter Hand-Held Oscilloscope with AC Clamp 40 MHz

Oscilloscope Mode (Vertical)

Frequency Response - DC Coupled

Without probes and test leads (with BB120): 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: 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

<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

Maximum 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

Maximum Floating Voltage, from any Terminal to Ground

600 Vrms CAT IV, 750 Vrms up to 400 Hz

Oscilloscope Mode (Horizontal)

Scope Modes

Normal, single, roll

Ranges (Normal)

Equivalent sampling: 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): 1 s 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

At DC to 5 MHz: 0.5 divisions or 5 mV
At 40 MHz: 1.5 divisions
At 60 MHz: 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

Input A and B

DC Voltage (V DC)

Ranges: 500 mV, 5, 50, 500, 750 V
Accuracy: ±(0.5% +5 counts)
Common mode rejection (CMRR): >100 dB at DC, >60 dB at 50, 60, or 400 Hz
Full scale reading: 5000 counts

True RMS Voltages (V AC and V AC+DC)

Ranges: 500 mV, 5, 50, 500, 750 V
Accuracy for 5 to 100% of range (DC coupled)
DC to 60 Hz (V AC + DC): ±(1% +10 counts)
1 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 V AC): >50 dB
Common mode rejection (CMRR): >100 dB at DC; >60 dB at 50, 60, or 400 Hz
Full scale reading: 5000 counts, reading is independent of any signal crest factor

Peak

Modes: Maximum peak, minimum peak, peak-to-peak
Ranges: 500 mV, 5, 50, 500, 2200 V
Accuracy: Maximum peak or minimum peak: 5% of full scale; peak-to-peak: 10% of full scale
Full scale reading: 500 counts

Frequency

Ranges: 1, 10, 100 Hz, 1, 10, 100 kHz, 1, 10, and 70 MHz
Frequency range: 15 Hz (1 Hz) to 50 MHz in continuous autoset
Accuracy at 1 Hz to 1 MHz: ±(0.5% +2 counts)
Full scale reading: 10,000 counts

RPM

Maximum reading: 50 kRPM
Accuracy: ±(0.5% +2 counts)

Duty Cycle

Range: 2 to 98%
Frequency range: 15 Hz (1 Hz) to 30 MHz in continuous autoset

Pulse Width

Frequency range: 15 Hz (1 Hz) to 30 MHz in continuous autoset
Full scale reading: 1000 counts

Amperes

With current clamp
Ranges: same as V DC, V AC, V AC+DC, or peak
Scale factors: 0.1, 1, 10, 100, 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)

Decibel

0 dBV: 1 V
0 dBm (600/50 Ω): 1 mW referenced to 600 or 50 Ω
dB on V DC, V AC, or V AC+DC
Full scale reading; 1000 counts

Crest Factor

Range: 1 to 10
Full scale reading: 90 counts

Phase

Modes: A to B, B to A
Range: 0 to 359°
Resolution: 1°

Power

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 sine wave signals

Input A to Common

Ohm

Ranges: 50, 500 Ω, 5, 50, 500 kΩ, 5, 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

Common Continuity (Cont)

Beep: <(30 Ω ±5 Ω) in 50 Ω range
Measurement current: 0.5 mA
Detection of shorts of: ≥1 ms

Common Diode

Measurement voltage: At 0.5 mA: >2.8 V
At open circuit: <4 V
Measurement current: 0.5 mA
Polarity: + on input A, - on COM

Capacitance (CAP)

Ranges: 50, 500 nF, 5, 50, 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

Sources

A, B

Single Vertical Line

Average, minimum and maximum readout
Average, minimum, maximum and time from start of readout (in ROLL mode; instrument in HOLD)
Minimum, maximum 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, minimum, maximum 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

Meter Readings

Measurement speed: Maximum 2 measurements
Record size (minimum, maximum, average): 2 M readings for 1 channel
Recorded time span: 2 weeks
Maximum number of events: 1024

Waveform Record

Maximum sample rate: 400 K samples
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

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 to 1, ±0.04

Frequency Range

10 Hz to 15 kHz
40 to 70 Hz

Number of Harmonics

DC to 51

Readings/Cursor Readings
(Fundamental 40 to 70 Hz)

Vrms/Arms /Watt
Each harmonic from fundamental maybe selected for individual readings

Bus Health Tester

AS-i

Subtype: NEN-EN50295

CAN

Subtype: ISO-11898

Interbus S

Subtype: RS-422
Protocol: EIA-422

Modbus

Subtype: RS-232; Protocol: RS-232/EIA-232
Subtype: RS-485; Protocol: RS-485/EIA-485

Foundation Fieldbus

Subtype: H1
Protocol: 61158 type 1, 31.25 kBit

Profibus

Subtype: DP; Protocol: EIA-485
Subtype: PA; Protocol: 61158 type 1

RS-232

Subtype: EIA-232

RS-485

Subtype: EIA-485

General Specifications

Waveform Display

Vertical: 10 div of 40 pixels
Horizontal: 12 div of 40 pixels

Maximum Input Voltage 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
Maximum floating voltage from any terminal to ground: 600 Vrms CAT IV, 750 Vrms up to 400 Hz

Display

Type: 5.7" color active martrix TFT
Resolution: 640 x 480

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®

Wireless Radio with Adapter

Frequency range: 2412 to 2462 MHz
Output power: <100 mW

Environmental

MIL-PRF-28800F, Class 2

Temperature

Battery operation: 32 to 104°F (0 to 40°C)
Power adapter operation: 32 to 122°F (0 to 50°C)
Storage: -4 to 140°F (-20 to 60°C) non-condensing

Humidity (Operating)

At 32 to 50°F (0 to 10°C): non-condensing
At 50 to 86°F (10 to 30°C): 95%
At 86 to 104°F (30 to 40°C): 75%
At 104 to 122°F (40 to 50°C): 45%

Altitude

Operating at 10,000' (3 km): CAT III 600 V
Operating at 6600' (2 km): CAT IV 600 V
Storage: 40,000' (12 km)

EMC Electromagnetic Compatibility

USA (FCC): 47 CFR 15 subpart B (this product is considered an exempt device per clause 15.103)

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

Memory

Internal memory can store 20 data sets (screen waveform and setup)
Micro SD card slot with optional SD card (maximum size of 32 GB)

Power

External: Via power adapter BC430
Input voltage: 10 to 21 V DC 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 temperature: 32 to 104°F (0 to 40°C) during charging

Dimensions

10.2 x 5.2 x 2.15" (259 x 132 x 55 mm)

Weight

3.2 lbs (1.4 kg) including battery pack