Fluke PM 3384B Autoranging CombiScope, 100 MHz, 4-Channel

The Fluke PM 3384B is a 100 MHz, 4-channel Autoranging CombiScope that combines digital storage oscilloscope and analog oscilloscope capabilities in a single benchtop instrument. Engineers and technicians switch between real-time analog display for dynamic signal visualization and digital mode for detailed waveform analysis, storage, and automated measurements. The instrument features autoranging for vertical settings and timebase, plus autocalibration support.

Technical Specifications

• Analog and digital bandwidth: 100 MHz


• Analog risetime: 3.5 ns


• Analog frequency response: ≥ 2 MHz @ -3 dB


• Phase shift: < 3° up to 100 kHz Digital Storage Capabilities


• Maximum sample rate (repetitive): Up to 10 GS/s using random sampling


• Maximum sample rate (single shot): 200 MS/s real-time sampling


• ADC resolution: 8-bit


• Memory resolution: 16-bit


• Record length: 1 CH × 32K, 2 CH × 16K, 4 CH × 8K, or 4 CH × 512 s (trace view)


• Trace storage: Up to 208 traces


• Pre-trigger view: Up to 1 full record (160 or 640 divisions depending on memory depth)


• Maximum captured frequency (single shot, 5 samples/period): 40 MHz (1 CH), 20 MHz (2 CH), 1 MHz (4 CH) Timebase


• Main timebase sweep speed: 0.5 s/div to 50 ns/div (1-2-5 sequence) Channels & Display


• 4 analog input channels


• Display modes: CH1, +/− CH2, CH3, +/− CH4, Add, Subtract, Alternate, or Chopped

Key Features

• Single-button switching between analog and digital modes


• Autoranging vertical settings and timebase


• Mathematical functions including FFT


• Waveform averaging to increase resolution beyond 8 bits


• Pre-trigger capture for event observation prior to trigger point

Typical Applications Complex waveform analysis across digital electronics, power systems, telecommunications, and embedded systems development where dual-mode capability reduces measurement setup time.