LeCroy 42MXS-B Digital Oscilloscope 400MHz, 2 Channel

The LeCroy 42MXS-B is a 400 MHz, 2-channel digital oscilloscope engineered for signal analysis and electronic troubleshooting. Part of the WaveSurfer MXs-B series, it delivers 5 GS/s single-shot sampling with 50 GS/s equivalent sample rate and up to 32 Mpts/channel memory depth. The instrument combines analog acquisition with advanced waveform processing, touch screen interface, and flexible triggering to enable rapid capture and analysis of complex signals across diverse test environments.

Technical Specifications

• Bandwidth: 400 MHz


• Analog channels: 2


• Maximum sample rate: 5 GS/s per channel (single-shot)


• Equivalent sample rate: 50 GS/s


• Memory depth: 16 Mpts/channel or 32 Mpts/channel (2-channel mode)


• Vertical resolution: 8 bits


• Rise time: 875 ps Vertical System


• Input impedance: 1 MΩ ± 1.0% || 16 pF ± 2 pF, or 50 Ω ± 1.0%


• Input coupling: AC, DC, GND


• Maximum input voltage: ±250 Vpk (1 MΩ), 5 VRMS (50 Ω)


• Sensitivity: 2 mV/div to 10 V/div (1 MΩ), 2 mV/div to 1 V/div (50 Ω)


• DC gain accuracy: ±1.5%


• Offset range: ±1 V, ±10 V, ±100 V (variable per scale)


• Channel-to-channel isolation: ≥52 dB at 100 MHz; ≥40 dB at 400 MHz


• Bandwidth limiters: 20 MHz, 200 MHz Horizontal System


• Time/division: 200 ps/div to 1000 s/div


• Clock accuracy: 5 ppm


• Trigger and interpolator jitter: 3 ps (rms) Acquisition Modes


• Averaging: Up to 1,000,000


• Interpolation: Linear, Sin x/x


• Enhanced resolution: Up to 11 bits


• Sequence mode: Up to 5,000 segments Triggering


• Modes: Normal, Auto, Single, Stop


• Sources: Ch 1–Ch 2, EXT, EXT/10, AC Line


• Coupling: AC, DC, LF Rej, HF Rej


• Pre-trigger delay: 0–100% full scale


• Post-trigger delay: 0–10,000 divisions


• Trigger sensitivity: 1.0 division (200 MHz), 2.0 divisions (400 MHz)


• Standard trigger types: Edge, Glitch, Width, Logic (Pattern), TV, Runt, Slew Rate, Interval, Dropout, Qualified


• Optional triggers: I2C, SPI, UART, RS-232, USB, Audio (I2S, LJ, RJ, TDM), MIL-STD-1553, AR

Key Features

• Large touch screen display for intuitive navigation


• Flexible input impedance selection (1 MΩ or 50 Ω)


• External trigger support with ±0.4 V (Ext) and ±4.0 V (EXT/10) input ranges


• Deep memory enables long-duration waveform capture


• Advanced waveform processing with up to 11-bit vertical resolution via enhancement


• Sequence mode segmentation for multi-trigger event analysis

Typical Applications

• Digital and analog circuit debugging


• High-speed signal characterization


• Transient and pulse measurements


• Serial protocol analysis (I2C, SPI, UART, USB)


• Audio and embedded system validation

Compatibility & Integration External trigger inputs accept logic and analog signals. Optional serial data trigger licenses enable protocol-specific analysis without external decode modules.