Logic Probes

What is a Logic Probe?

A logic probe is a tool used in conjunction with mixed signal instruments, like oscilloscopes and ScopeCorders, to capture digital signals. The effectiveness of waveform measurement depends significantly on the quality of the probe, its interaction with the measuring instrument, and its connection to the circuit under test.

Yokogawa Logic Probes

Yokogawa provides a range of low and high-voltage, isolated, and non-isolated logic probes. These probes support up to 8 logic inputs, ensuring compatibility with various testing needs. For detailed specifications, refer to our Precision Waveform Measurement Essentials brochure.

Key Features

  • High Accuracy: Ensures precise digital signal capture.
  • User-Friendly Interface: Simplified operations for both experienced technicians and novices.
  • Durable Design: Built for robust performance in various testing environments.
  • Versatile Applications: Suitable for a wide range of digital logic testing scenarios.
  • Pre-configured Tests: Easy to run tests with minimal setup.
  • Compact Portability: Lightweight and easy to use in different settings.

Logic Probe Application Areas

  • Design and Validation: Verify the performance of digital circuits during the design phase.
  • Manufacturing: Ensure quality control in the production of digital devices.
  • Maintenance and Troubleshooting: Diagnose and resolve issues in existing digital circuits.

Why Choose Yokogawa Logic Probes?

  • Proven Reliability: Trusted by industry professionals for consistent performance.
  • Comprehensive Support: Access expert guidance and support for optimal use of equipment.
  • Innovative Technology: Stay ahead with cutting-edge tools that meet the evolving needs of digital logic testing.

Equip your testing toolkit with Yokogawa's advanced logic probes to ensure your digital circuits operate flawlessly.

701988 (PBL100) Logic Probe

100 kΩ input resistance, toggle frequency of 250 MHz

8-bit, non-isolated, response speed: 1µs, threshold level approx 1.4V
Two measurement leads (B9879PX and B9879KX) included.

  • 700987 Logic Probe - Isolated Inputs
  • 8-bit, isolated, response speed: 1ms or less (DC), 20ms or less (AC), threshold level 6VDC, or 50VAC.
  • 758917 and 758922, 758929, 701954 

8-bit, non-isolated, response speed: 3µs or less, treshold level approx 1.4V
702911: 1 meter cable, 702912: 3 meter cable


After a disastrous 2009, the large publicly held test companies enjoyed booming business in 2010.

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