Datasheet
OSCILLOSCOPE MODE
VERTICAL DEFLECTION
Number of inputs 2
Input coupling AC, DC with ground level indicator
Input sensitivity 5 mV ... 500 V/div (with included
VPS40 (Fluke 124) and STL120
shielded test leads measure up to
600Vrms CAT III)
Vertical resolution 8 bit
Accuracy ± (2% of reading + 0.05 x
range/div)
Input impedance 1 MΩ ± 1% // 225 pF with STL120
shielded test leads
1 MΩ ± 1% // 20 pF ± 3 pF with
BB120
5 MΩ ±1 % // 15.5 pF with
VPS40, 10:1 Voltage probe
HORIZONTAL
Maximum sample rate Fluke 124: 2.5 GS/s for repetitive
signals; 25 MS/s for single shot
Fluke 123: 1.25 GS/s for repetitive
signals; 25 MS/s for single shot
Number of digitizers 2
Time base range 10 ns/div to 1 min/div (Fluke 124);
20 ns/div to 1 min/div (Fluke 123)
Maximum record length 512 Min-Max points per input
Accuracy ± (0.1% of reading + 1 pixel)
Glitch detect 40 ns
DISPLAY AND ACQUISITION
Display modes Input A, input A and B, envelope,
smooth
Acquisition modes Normal, single shot, roll, glitch
capture (always on)
TRIGGER AND DELAY
Source Input A, input B, external via
optional ITP120
Modes Automatic Connect-and-View™,
Free Run, Edge, Single Shot, Video,
Video Line
Connect-and-View™ Advanced automatic triggering that
recognizes signal patterns and auto-
matically sets up and continuously
adjusts triggering, time base and
amplitude. Automatically displays
stable pictures of complex and
dynamic signals like motor drive
and control signals.
Video triggering NTSC, PAL, PAL+, SECAM. Includes
line select
Time delay Up to 10 divisions pre-trigger view
MEASUREMENTS VDC, VAC, VAC+DC, Vpeak max,
Vpeak min, Vpeak to peak, frequen-
cy (Hz), positive pulse width, negati-
ve pulse width, positive duty cycle,
negative duty cycle, Amp AC,
Amp DC, Amp AC+DC, Phase,
Temperature °C, Temperature °F,
dBV, dBm into 50Ω and 600Ω.
(Amps, °C or °F with optional
probes)
CURSOR MEASUREMENTS (124 only)
Sources Input A, Input B
Modes Single or dual vertical cursor, dual
horizontal cursor, rise- or falltime
Measurements:
Single vertical line Average, min value, max value, time
from start of recording in roll mode
Dual vertical lines ∆V at markers, time between
cursors, 1/T between cursors (in Hz)
Dual horizontal lines High, low or ∆V - readout, rise- and
falltime: transition time, 0 %-level,
100 %-level, with markers at 10 %
and 90 %
Accuracy As oscilloscope
DUAL INPUT METER
The specified accuracy is valid over the temperature range 18 °C to
28 °C (65 °F to 82 °F). Add 10 % of specified accuracy for each degree
C below 18 °C or above 28 °C.
Max. meter bandwidth 40 MHz (for Fluke 124) and 20 MHz
(for Fluke 123)
VDC
Ranges 500mV, 5V, 50V, 500V, 1,250V
Max. Resolution 5,000 counts
Accuracy ± (0.5% + 5 counts)
VAC RMS
Ranges 500mV, 5V, 50V, 500V, 1,250V
Max. Resolution 5,000 counts
Accuracy 1 Hz...60 Hz: ±(1% + 10 counts)
60 Hz...1 kHz: ±(2.5% + 15 counts)
20 kHz...1 MHz (5% + 20 counts)
VAC+DC TRUE RMS
Ranges 500mV, 5V, 50V, 500V, 1,250V
Max. Resolution 5,000 counts
Accuracy DC ... 60 Hz: ±(1% + 10 counts)
60 Hz...1 kHz: ±(2.5% + 15 counts)
20 kHz...1 MHz ±(5% + 20 counts)
OHMS
Ranges 500Ω, 5kΩ, 50kΩ, 500kΩ, 5MΩ,
30MΩ
Max. Resolution 5,000 counts
Accuracy ± (0.6% of reading + 5 counts)
CAPACITANCE
Ranges 50 nF ... 500µF
Max. Resolution 5,000 counts
Accuracy ± (2% of reading + 10 counts)
OTHER METER FUNCTIONS
Frequency Up to 70 MHz (Fluke 124) and up to
40 MHz (Fluke 123)
Continuity Beeper on < 30Ω
Diode test Up to 2.8V
Amps Amp DC, Amp AC, Amp AC+DC
using an optional current clamp or
shunt. Scaling factors: 0.1 mV/Amp ...
100 V/Amp
Temperature (°C, °F) With optional accessories. Scale
factors 1 mV/°C or 1 mV/°F
Number of inputs 2
Input impedance 1MΩ ± 1% // 10 pF ± 2 pF
Advanced meter Auto/manual ranging
functions TouchHold
®
Relative measurements
(zero reference)
TrendPlot recording
Technical Specifications ScopeMeter 120 Series
Bandwidth and risetime Fluke 124 Fluke 123
• with VPS40 probes 40 MHz 20 MHz
• input A and B directly 40 MHz 20 MHz
• with STL120 Shielded Test Leads 12.5 MHz 12.5 MHz
Instrument risetime (input directly) 8.75 ns 17.5 ns
Technical Datasheet Fluke ScopeMeters 5