Oscilloscope/Logic Analyzer Skill

Overview

This skill provides test equipment integration for signal analysis, enabling automated measurements, protocol decoding, and timing verification using oscilloscopes and logic analyzers.

Capabilities

Oscilloscope Operations

• Channel configuration
• Trigger setup and management
• Measurement automation
• Waveform capture and export
• Math and FFT operations
• Cursor measurements
• Mask testing

Logic Analyzer Operations

• Digital channel configuration
• Protocol decoder setup
• Trigger configuration
• Capture depth management
• State vs timing mode
• Parallel bus capture

Signal Measurements

• Rise/fall time measurement
• Frequency and period
• Duty cycle analysis
• Amplitude measurements
• Pulse width measurement
• Signal integrity metrics
• Eye diagram analysis

Protocol Decoding

• I2C protocol decoding
• SPI protocol decoding
• UART/RS-232 decoding
• CAN/LIN decoding
• Custom protocol definitions

Timing Analysis

• Setup and hold time verification
• Propagation delay measurement
• Clock jitter analysis
• Timing margin verification
• Glitch detection

FFT and Frequency Analysis

• Spectrum analysis
• Harmonic analysis
• THD calculation
• EMI pre-compliance
• Noise floor analysis

Instrument Integration

• Keysight/Agilent instruments
• Tektronix oscilloscopes
• Rigol oscilloscopes
• Saleae Logic analyzers
• Sigrok/PulseView
• SCPI command automation

Target Processes

• signal-integrity-testing.js - Signal quality validation
• hardware-bring-up.js - Initial signal verification
• real-time-performance-validation.js - Timing validation

Dependencies

• Oscilloscope software/drivers
• Logic analyzer software (Saleae Logic, Sigrok)
• VISA/SCPI libraries
• Protocol decoder plugins

Usage Context

This skill is invoked when tasks require:

• Signal integrity verification
• Timing analysis and validation
• Protocol debugging
• Hardware validation
• EMI pre-compliance testing

Measurement Examples

Rise Time Measurement

scope.channel[1].enabled = True
scope.channel[1].scale = 1.0  # V/div
scope.trigger.source = "CH1"
scope.trigger.level = 1.65  # V
scope.trigger.slope = "RISE"

measurement = scope.measure.rise_time("CH1")
print(f"Rise time: {measurement * 1e9:.2f} ns")

Logic Analyzer Capture

analyzer.set_sample_rate(24e6)  # 24 MHz
analyzer.set_capture_depth(10e6)  # 10M samples
analyzer.add_decoder("i2c", sda=0, scl=1)
analyzer.trigger.add_condition("i2c_start")
analyzer.start_capture()

Configuration

equipment:
  oscilloscope:
    type: keysight | tektronix | rigol
    connection: visa | usb | ethernet
    address: "TCPIP::192.168.1.100::INSTR"
  logic_analyzer:
    type: saleae | sigrok
    sample_rate: 24MHz
    channels: 8