The Tektronix CSA7404B Communications Signal Analyzer delivers high-performance signal characterization across 4 GHz bandwidth with four independent acquisition channels operating at 20 GS/s. This instrument provides the acquisition speed, vertical resolution, and measurement depth required for complex communication signal analysis, protocol decoding, and signal integrity validation in modern communication system development.
Technical Specifications
Acquisition System
• Bandwidth: 4 GHz
• Channels: 4 independent inputs
• Sample Rate: 20 GS/s per channel (interleaved mode)
• Vertical Resolution: 10 bits
• Record Length: Up to 250,000 points per channel
• Input Impedance: 50 Ω ± 2%
• Input Coupling: DC, AC, GND
• Vertical Sensitivity: 1 mV/div to 10 V/div
• Offset Range: ±5 V (10–50 mV/div), ±50 V (100 mV/div to 1 V/div), ±500 V (2–10 V/div)
• Bandwidth Limit: Selectable 20 MHz to 4 GHz in 1 MHz increments
Trigger System
• Modes: Auto, Normal, Single
• Sources: CH1, CH2, CH3, CH4, Ext, Line
• Holdoff: 200 ns to 10 s
• Advanced Trigger Types: Edge, Pulse Width, Glitch, Runt, Logic, Setup/Hold, Video
Power
• Input: 100–240 VAC ±10%, 50/60 Hz
• Consumption: < 400 VA typical
Physical
• Dimensions: 445 × 191 × 500 mm (W × H × D)
• Weight: 18.1 kg
– Key Features
• Measurement functions: Amplitude, Rise/Fall Time, Pulse Width, Duty Cycle, RMS, Frequency, Period, Noise, Jitter, Eye Diagrams
• Signal integrity analysis for reflections, crosstalk, and channel loss characterization
• Jitter decomposition and automated eye diagram measurements
• Protocol decoder support for I²C, SPI, and parallel bus standards
• Advanced math: FFT, Integration, Differentiation, Averaging, Filter functions
– Interfaces & Integration
• Front Panel: 4 × BNC inputs (channels), 1 × BNC external trigger, USB ports
• Rear Panel: Ethernet, GPIB, VGA output, Auxiliary I/O for synchronization
– Typical Applications
Signal characterization in high-speed serial communications, protocol validation, jitter and timing analysis, signal integrity measurements, and multi-channel signal correlation.
