The LeCroy 9400A is a dual-channel, 175 MHz digital oscilloscope engineered for precision signal acquisition and analysis in laboratory and field troubleshooting environments. It delivers real-time sampling up to 100 MS/s per channel with equivalent-time sampling at 5 GSa/s, coupled with 32 Kpts record length per channel and 8-bit vertical resolution. The instrument combines advanced triggering capabilities—including edge, pulse width, runt, pattern, state, dropout, interval, video, and trigger delay modes—with flexible acquisition methods such as Random Interleaved Sampling, single shot, roll, and sequence modes. A 7-inch color LCD display renders up to four simultaneous waveforms with dual-axis zoom expansion up to 100× horizontal and 10× vertical for processed signals. Integrated math functions encompass addition, subtraction, multiplication, division, FFT, and XY plotting, with optional waveform processing and spectral analysis packages available.
Technical Specifications
• Bandwidth: 175 MHz
• Channels: 2
• Sampling Rate: 100 MS/s (real-time) or 5 GSa/s (equivalent-time)
• Record Length: 32 Kpts per channel
• Vertical Resolution: 8-bit ADCs
• Rise Time: < 2.0 ns
• DC Accuracy: ±2% standard; ±1% optional
• Input Impedance: 1 MΩ (≈50 pF) or 50 Ω selectable
• Maximum Input Voltage: 250 V DC + peak AC at 1 MΩ; ±10 V peak AC at 50 Ω
• Vertical Offset: -8 divisions in 0.04-division increments
• Probe Calibration: 1 kHz squarewave, 0–5 V P-P (±0.6%), 1 V P-P (±0.5%)
– Key Features
• Triggering: Eight trigger types with auto, normal, single, and stop modes; trigger sensitivity 1 div or 1 mV
• Pre/Post-trigger: Up to 100% pre-trigger capture; up to 10,000 divisions post-trigger
• Cursor Analysis: Voltage, time, and cross-hair cursors with simultaneous frequency (Hz) and magnitude (dB or V) readout during FFT analysis
• Display Expansion: Horizontal zoom to 100×; vertical expansion 0.4–2× standard, up to 10× for processed waveforms
• Optional Processing: WP01 waveform processing and WP02 FFT packages for signal averaging and spectral analysis
– Typical Applications
Signal debugging, waveform characterization, frequency domain analysis, transient capture, and pulse train inspection across communications, power electronics, and general-purpose measurement domains.
– Compatibility & Integration
External triggering via CH1, CH2, LINE, EXT, or EXT/10 sources. Selectable 1 MΩ and 50 Ω input impedances support both high-impedance and matched-load measurements.
