SpecificationsOscilloscope bandwidth40 MHzDual input true RMS meterVDC, VAC, VAC + VDC, Ohms,Continuity, Diode-test Current, °C, °F, Capacitance, dBV, dBM, Crest Factor, Touch Hold and ZerosetTrendPlot recordingAutomatic vertical scaling and time compression
Display the actual, MIN, MAX and AVG readingCursorsFluke 125/124: ∆T, 1/∆T, V, ∆V, rise- and fall timeSample rate2.5 GS/s repetitive sampling
25 MS/s single shot samplingInputs and digitizers2Timebase range20 ns - 1 min/divInput sensitivity5 mV - 500 V/divTrigger typesConnect-and-View™, Free Run, Single Shot, Edge, Video, ExternalGlitch capture40 nsScope measurementsAutomatic measurements: 26 (all instruments) On top, Fluke 125 has additional measurement functions for Power (W), VA, VAR and Power Factor (PF) for single phase and balanced-three-phase (delta) power systemsHarmonics modeCapability to analyze the harmonics contents of power signals
(see Harmonics Mode Section below for details)Maximum record length512 min/max pts per inputMemory20 screens and setupsAdditional Power Measurement CapabilitiesMeasurement types

• Watt,
• VA
• VAR,
• Power Factor (PF)

Power configurationSingle phase or balanced three-phase (delta-configuration) mains supplyVoltage measurementChannel A; using STL120, voltage probe or direct inputCurrent measurementChannel B, using i400s (included) or other compatible current clampCurrent clamp or
shunt sensitivity0.1 / 1 / 10 / 100 / 1000 mV/A, 10 mV/mA and 400 mV/AHarmonics mode Converts waveform information into a harmonics display (using FFT processing) which shows the relative amplitudes of the 1st up to the 33rd harmonicAnalyzed waveformVoltage waveform(Ch.A), Current wavefrom (Ch.B) or Power (Ch.A x Ch.B), automatically generatedHarmonics frequency rangeDC up to 33rd harmonic (for fundamental up to 60 Hz);
DC up to 24th harmonic (for fundamental up to 400 Hz)DisplayBargraph showing 1st up to 33rd harmonic and DC; amplitude displayed in % relative to fundamentalMeasurementsRelative amplitude of individual harmonics;
THD in %r or %fBus Health Test FunctionsBus health testVerifies the electrical parameters of industrial bus systems using automatic measurement and analysis functions. Next to that, an Eyepattern mode is provided for visual inspection of signal quality.Parameter classificationDefault values:

• well within limits = 'good'
• within certain percentage of the limit values = 'weak'
• beyond limit values = 'bad'

Limits values, as a default, are based on industry standard for the selected bus type or may be set by the user.

Bus systems supportedAS-i (EN50295, 166 kb/s);
CAN-bus (ISO-11898, up to 1 Mb/s);
Interbus S (EIA-485, 500 kb/s);
ControlNet (61158 type 2, 5Mb/s);
Modbus (EIA-232 up to 115 kb/s and EIA-485 up to 10 Mb/s);
Foundation Fieldbus H1 (61158 type 1, 31.25 kb/s);
Profibus DP (EIA-485 up to 10 Mb/s);
Profibus PA (61158 type 1, 31.25 kb/s);
Ethernet 10Base2 (coaxial);
Ethernet 10BaseT (UTP, 10 Mb/s);
RS-232 (EIA-232, up to 115 kb/s);
RS-485 (EIA-485, up to 10 Mb/s);
User defined single wire or balanced systemModesWaveform Parameter Analysis With Automatic Read-out And Parameter:

• validation (good / weak / bad); test limits are based on industry standards or may be set by the user
• Eyepattern display mode

Measured parameters
(where applicable)Baud rate,
Risetime,
Fall time,
High level,
Low level,
Bias voltage level,
Signal amplitude,
Distortion,
JitterEyepattern display modeGives waveform display of bus signals with display persistence
Timebase and attenuator settings may be altered by the userEnvironmental SpecificationsOperating temperature0°C to 50°CStorage temperature-20°C to +60°COperating altitude3,000 mSafety SpecificationsElectrical safety600V CAT III (EN61010-1)Mechanical And General SpecificationsSize232 x 115 x 50 mmWeight1.2 kgWarranty3-years on main instrument
1-year on accessoriesBattery life7 hrs using NiMHRS232/USB interfaceOptically isolated via optional PM9080 or OC4USB for interfacing to Printer or PC