Datasheet
8 Fluke Corporation Fluke 120B Series Industrial ScopeMeter
®
Hand-Held Oscilloscopes
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 measurements/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