The Yokogawa DL7440 is a 500 MHz mixed-signal oscilloscope designed for simultaneous analog and digital signal acquisition in complex test environments. It combines four analog channels with optional 16-bit logic input capability, enabling capture of multiple signal types for debugging and characterization of modern electronic systems. The instrument delivers a 2 GS/s maximum sampling rate and up to 16 MW record length per channel, supporting extended waveform capture at high sample rates. With dual input impedance options—1 MΩ and 50 Ω—the DL7440 accommodates both standard and matched-impedance measurements across voltage ranges of 2 mV/div to 10 V/div. Channel-to-channel skew is 1 ns or less, and isolation exceeds –34 dB at 500 MHz, ensuring signal integrity in multi-channel analysis. The oscilloscope includes GIGAZoom functionality for rapid navigation through large datasets, all-points display mode to minimize transient loss, and user-defined math operations. Digital connectivity spans USB, optional Ethernet, and Type II PC card interfaces for flexible data management and network deployment.
Technical Specifications
Analog Front-End
• 4 analog input channels (CH1–CH4)
• 500 MHz bandwidth (–3 dB point)
• Input coupling: AC 1 MΩ, DC 1 MΩ, DC 50 Ω, GND
• Input impedance: 1 MΩ ±1.0% (~20 pF) or 50 Ω ±1.0% (VSWR ≤1.4, DC–500 MHz)
• Voltage sensitivity: 2 mV/div to 10 V/div (1 MΩ), 2 mV/div to 1 V/div (50 Ω)
• DC offset range: ±1 V (2–50 mV/div), ±10 V (100–500 mV/div), ±100 V (1–10 V/div)
• Maximum input: 400 V DC+ACpeak (1 MΩ, ≤1 kHz) / 5 Vrms, 10 Vpeak (50 Ω)
• Residual noise: ±1.25 mV or ±0.15 div typical
• Channel skew: ≤1 ns (identical settings)
• Channel isolation: –34 dB @ 500 MHz typical
Acquisition
• Maximum sampling rate: 2 GS/s
• Record length: 1 kW to 16 MW per channel
• Digital channels: Optional 16-bit logic input (up to 250 MHz logic probe)
Connectivity & Storage
• USB data transfer
• Optional Ethernet interface
• Type II PC card interface
– Key Features
• GIGAZoom function for high-speed navigation in large waveforms
• All-points display mode for real-time transient capture
• User-defined math operations
• Optional power supply and serial bus analysis modules
• AC coupling low-frequency response: 10 Hz or less (1 Hz with 10:1 probe)
– Typical Applications
Mixed-signal debugging, power electronics characterization, serial bus protocol analysis, and multi-channel timing verification in embedded and RF systems.
– Compatibility & Integration
Supports 1 MΩ and 50 Ω passive probes (e.g., model 700988). Logic probes compatible with 16-bit acquisition up to 250 MHz.
