LeCroy 42XS-A Digital Oscilloscope 400MHz, 2 Channel

The LeCroy 42XS-A is a 400 MHz, 2-channel digital oscilloscope engineered for signal analysis across diverse applications. Its 10.4-inch color TFT-LCD touch screen (800 × 600 SVGA) delivers clear waveform visualization with high-speed capture at 2.5 GS/s single-shot or 50 GS/s RIS mode. The instrument captures 5 Mpts per channel across all channels and combines advanced triggering - including SMART Triggers, glitch, width, video pattern, dropout, runt, and slew rate detection - with 23 built-in measurements and optional serial data decode (SPI, I2C, UART, RS-232, LIN, CAN).

WaveStream™ fast viewing mode provides analog-like display with high update rates ideal for jitter and anomaly observation.

Technical Specifications

• Bandwidth: 400 MHz


• Channels: 2


• Sample Rate: 2.5 GS/s (single-shot); 50 GS/s (RIS)


• Record Length: 5 Mpts/channel (all channels)


• Rise Time: 875 ps


• Vertical Resolution: 8-bit


• Vertical Sensitivity: 1 MΩ: 2 mV/div to 10 V/div; 50 Ω: 2 mV/div to 1 V/div


• Vertical DC Gain Accuracy: ±1.0% of full scale (typical); ±1.5% of full scale @ 10 mV/div (warranted)


• Bandwidth Limiting Filters: 20 MHz, 200 MHz


• Maximum Input Voltage: 50 Ω: 5 Vrms; 1 MΩ: 400 V max (DC + Peak AC ≤ 5 kHz)


• Input Impedance: 1 MΩ || 16 pF; 50 Ω ±1%


• Time Base Range: 200 ps/div to 1000 s/div (roll mode: 500 ms/div to 1000 s/div)


• Time Base Accuracy: ≤ 5 ppm @ 25°C (typical); ≤ 10 ppm @ 5–40°C


• Waveform Capture Time: Up to 1 ms at full sample rate on all channels

Key Features

• 10.4-inch capacitive touch display with 800 × 600 SVGA resolution


• SMART Trigger with exclusion, glitch (500 ps), width, video, logic pattern, dropout, interval, runt, and slew rate modes


• 23 parametric measurements including rise/fall time, frequency, phase, duty cycle, and deviation


• Math functions: Sum, Difference, Product, Ratio, FFT (up to 25 kpts)


• Optional extended math: Absolute Value, Averaging, Derivative, Envelope, Enhanced Resolution (11-bit), Integral, Invert, and function chaining


• AC, DC, and GND input coupling (DC and GND for 50 Ω only)


• QuickZoom front panel control plus touch and mouse zooming

Typical Applications Signal integrity validation, digital design debug, analog circuit characterization, and transient event capture across embedded systems, power electronics, and communication circuits.

Compatibility & Integration Optional serial data trigger and decode support includes SPI, I2C, UART, RS-232, LIN, and CAN protocols for protocol-aware triggering and analysis.