Specifications: Fluke 120B series industrial portable ScopeMeter® oscilloscopes

Oscilloscope mode

Vertical

• Frequency response: DC coupled
  • Without probes or test leads (with BB120):
    • 123B: DC to 20 MHz (-3 dB)
    • 124B and 125B: DC to 40 MHz (-3 dB)
  • With shielded test leads STL120-IV 1:1: DC to 12,5 MHz (-3 dB) / DC to 20 MHz (-6 dB)
  • With probe VP41 10:1:
    • 123B: DC to 20 MHz (-3 dB)
    • 124B and 125B: DC to 40 MHz (-3 dB)
• Frequency response: AC coupled (if offset is disabled)
  • Without probes or test leads: < 10 Hz (-3 dB)
  • With shielded test leads STL120-IV 1:1: < 10 Hz (-3 dB)
  • With probe VP41 10:1: < 10 Hz (-3 dB)
• Rise time (excluding probe)
  • 123B: < 17,5 ns
  • 124B and 125B: < 8,75 ns
• Input impedance
  • Without probes or test leads: 1 MΩ / 20 pF
  • With BB120: 1 MΩ / 24 pF
  • With shielded test leads STL120-IV 1:1: 1 MΩ / 230 pF
  • With probe VP41 10:1: 5 MΩ / 15,5 pF
• Sensitivity: 5 mV to 200 V/div
• Analogue 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
  • With BB120: 600 Vrms
• Maximum floating voltage from any terminal to earth: 600 Vrms

Horizontal

• Oscilloscope modes: Normal, single, roll
• Ranges (normal)
  • Equivalent sampling
    • 123B: 20 ns to 500 ns/div
    • 124B and 125B: 10 ns to 500 ns/div
  • Real-time sampling: 1 μs to 5 s/div
• Sampling rate (for both channels simultaneously): Up to 4 GS/s (equivalent sampling), 40 MS/s (real time)

Dual-input multimeter

• DC voltage (V DC)
  • Ranges: 500 mV, 5 V, 50 V, 500 V, 750 V
  • Accuracy: ± (0,5 % + 5 counts)
• True RMS voltages (V AC and V AC+DC)
  • Ranges: 500 mV, 5 V, 50 V, 500 V, 750 V
  • Accuracy:
    • DC to 60 Hz (V AC+DC): ± (1% + 10 counts)
    • 60 Hz to 20 kHz (V AC): ± (2,5% + 15 counts)
• Frequency (Hz)
  • Ranges:
    • 123B: From 1 Hz to 50 MHz
    • 124B and 125B: From 1 Hz to 70 MHz
  • Accuracy: ± (0,5% + 2 counts)

Advanced oscilloscope functions

• Display modes
  • Normal: Captures transients up to 25 ns
  • Smooth: Suppresses noise
  • Envelope: Records minimum and maximum waveforms
  • Auto setup (Connect-and-View™): Continuous automatic adjustments

Logger

• Multimeter readings
  • Measurement speed: Up to 2 measurements/s
  • Log size: 2 M readings per channel
• Waveform logging
  • Maximum sampling rate: 400 K samples/s
  • Internal memory size: 400 M samples

Environmental specifications

• Operating temperature: From 0 °C to 40 °C
• Altitude: Operative at 3 km (CAT III 600 V), 2 km (CAT IV 600 V)
• Enclosure protection: IP51

Other specifications

• Display: 5,7 inch TFT
• Power supply
  • External: Power adapter BC430
  • Internal: Battery pack BP290 (runtime of 7 hours)
• Dimensions: 259 x 132 x 55 mm
• Weight: 1,4 kg