LeCroy MSO 44XS-A Mixed Signal Oscilloscope 400MHz, 2.5GS/s, 4+18ch, 10Mpts/ch

The LeCroy MSO 44XS-A is a mixed-signal oscilloscope combining 4 analog channels and 18 digital channels for embedded system design, debugging, and signal analysis. With 400 MHz analog bandwidth, 2.5 GS/s sample rate, and up to 10 Mpts/ch record length, it delivers the acquisition depth and speed required for complex embedded applications. The 10.4-inch color touch screen and advanced triggering architecture streamline troubleshooting across analog and digital domains simultaneously.

Technical Specifications

• Bandwidth: 400 MHz


• Sample Rate: 2.5 GS/s


• Record Length: 5 Mpts/ch (standard), 10 Mpts/ch (optional)


• Vertical Resolution: 8-bit


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


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


• Input Impedance: 1 MΩ || 16 pF or 50 Ω selectable


• Maximum Input Voltage: 5 Vrms (50 Ω); 400 V max (1 MΩ)


• Input Coupling: AC, DC, GND


• Bandwidth Limit: 20 MHz, 200 MHz Digital Channels (18)


• Maximum Input Frequency: 250 MHz


• Sample Rate: 1 GS/s per channel


• Record Length: 10 Mpts per channel


• Input Impedance: 100 kΩ || 5.0 pF


• Maximum Input Voltage: ±30 V non-destruct


• Threshold Groupings: D0–D8, D9–D17


• Threshold Levels: TTL, ECL, CMOS (2.5 V, 3.3 V, 5 V), PECL, LVDS, or user-defined Horizontal & Trigger


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


• Timebase Accuracy: ≤ 5 ppm @ 25 °C (typical)


• Trigger Hold-off: 1 ns to 20 s or 1 to 1,000,000,000 events


• Trigger Types: Edge, Glitch, Width, Logic (Pattern), TV (NTSC, PAL, SECAM, HDTV 720p/1080i/1080p), Runt, Slew Rate, Interval, Dropout, Qualified (State or Edge)


• Pre-trigger Delay: 0–100% of full scale


• Post-trigger Delay: 0–10,000 divisions Measurement Capabilities


• Up to 6 simultaneous parameters


• Gated measurements supported


• Parameters: Amplitude, Area, Delay, Duty, Fall Time, Frequency, Maximum, Mean, Minimum, Overshoot+/−, Period, Peak-Peak, Phase, Rise Time, RMS, Skew, Standard Deviation, Width+

Key Features

• Dual-domain analysis with synchronized analog and digital capture


• Flexible trigger architecture supports pattern, state, and edge-qualified triggering


• High-resolution touch interface for rapid navigation and control


• Selectable bandwidth limits reduce noise in low-frequency measurements


• Configurable digital thresholds for mixed-voltage logic families

Typical Applications

• Embedded system validation and protocol debugging


• Digital-analog interface characterization


• Low-speed serial and parallel protocol analysis


• Power supply and clock distribution troubleshooting

Compatibility & Integration Accepts AC, DC, and GND input coupling modes. External trigger input accepts EXT/10 (±4 V) or EXT (±400 mV) signals.