The Tektronix 2440 is a 300 MHz, two-channel digital sampling oscilloscope engineered for high-speed signal acquisition and analysis. This instrument delivers simultaneous 500 MS/s sampling per channel with equivalent-time sampling to 50 ns/div, capturing transient events as narrow as 2 ns. The 8-bit vertical resolution and 1K record length per channel support detailed waveform characterization across diverse measurement scenarios.
Technical Specifications
Bandwidth & Sampling
• Bandwidth: 300 MHz (Channels 1 and 2); 300 MHz X-Y at probe tip
• Simultaneous sampling: 500 MS/s per channel
• Equivalent-time sampling: 50 ns/div and faster
• Maximum single-shot bandwidth: 200 MHz
• Minimum glitch capture: 2 ns
Vertical Resolution
• Resolution: 8 bits
• Record length: 1024 points per channel
• Deflection range: 2 mV/div to 5 V/div (1-2-5 sequence)
• Expanded/Average sensitivity: 200 µV/div
• Vertical position: ±10 div with adjustable offset
• Input coupling: AC, DC, GND with selectable noise, HF, and LF rejection
Horizontal & Triggering
• Main time base: 2 ns/div to 5 s/div (1-2-5 sequence)
• Time base accuracy: 0.0015% crystal-controlled
• Delay matching (CH1 to CH2): ±150 ps
• Trigger sources: Internal and External
• Trigger level range: ±18 div × V/div
• Glitch trigger minimum: 2 ns
Acquisition Modes
• Envelope mode: 2 to 50 ns/div sweep speeds
• Average mode: 2 to 256 acquisitions (11-bit effective resolution)
• Single sequence trigger operation supported
Electrical
• Input impedance: 1 MΩ ±1% (standard); 50 Ω (option)
• Maximum input voltage (1 MΩ): 400 V dc + peak ac; 800 V p-p ac at ≤10 kHz
• Maximum input voltage (50 Ω): 5 V RMS; 0.5 W per 1 s interval
• Line voltage: 115 V (90–132 V) or 230 V (80–250 V)
• Power consumption: 160 W typical (250 VA); 200 W maximum (300 VA)
– Key Features
• Dual-channel simultaneous acquisition eliminates timing uncertainties
• Envelope and average modes extend effective resolution to 11 bits
• Delay matching precision supports dual-channel correlation analysis
• Crystal timebase ensures drift-free long-term measurements
• Selectable trigger couplings optimize noise rejection in varied environments
– Typical Applications
• High-speed digital and mixed-signal circuit debugging
• Transient capture and glitch detection in logic designs
• Equivalent-time waveform reconstruction for repetitive signals
• Multi-channel timing and synchronization verification
– Compatibility & Integration
• GPIB (IEEE 488.1-1987) and RS-232C interfaces
• Tektronix Standard Codes and Formats support
• MATE/CIIL capability (2440M model)
• HP 7400 Series, Tektronix HC 100, and HP ThinkJet printer/plotter output
