Gould Biomation K100D Digital Logic Analyzer 16-Ch GPIB CRT 100-240V w/ Probes

Gould Biomation K100D Digital Logic Analyzer 16-Ch GPIB CRT 100-240V w/ Probes

The Gould Biomation K100D is a portable benchtop digital logic analyzer with a built-in CRT display and a full alphanumeric keypad interface. Produced under the Gould Biomation brand — a name well known in the digital test and measurement field — the K100D captures and displays digital logic states across two input banks, making it a capable tool for real-time hardware debugging and digital circuit analysis. It features a GPIB (IEEE-488) interface for instrument control and data transfer, plus TRIG OUT and VIDEO OUT outputs on the rear panel.

Specifications & What's Included

• Model: K100D Digital Logic Analyzer
• Brand: Gould Biomation
• Channels: 16 — Input A (Ch.0–7) and Input B (Ch.20–7), via ribbon cable connectors on front
• Display: Built-in CRT
• Interface: GPIB (IEEE-488), 24-pin rear connector
• Outputs: TRIG OUT (3× BNC), VIDEO OUT (1× BNC), ±5V reference outputs
• Power: 100/120/220/240V AC selectable (rear voltage selector switch), IEC C13 power inlet
• Cooling: Rear-mounted fan
• Form factor: Portable benchtop with integrated carry handle
• Country of Manufacture: USA
• Includes: Logic probe set with IC clip-style tips on flat ribbon cable, and two loose wire leads

Applications

The Gould Biomation K100D belongs to a class of standalone logic analyzers that were widely used in electronics development labs, field service, and manufacturing test environments during the 1980s and early 1990s. Logic analyzers of this type capture multiple digital signal lines simultaneously and display them as timing waveforms or state tables, allowing engineers to observe bus activity, verify timing relationships, and troubleshoot microprocessor-based hardware — tasks that a standard oscilloscope cannot easily handle due to channel count limitations. The built-in CRT and keypad made the K100D self-contained, eliminating the need for an external PC or display. The GPIB interface allowed it to be integrated into automated test setups controlled by HP-IB compatible instruments or a PC running test software, which was the standard automation bus of the era. The VIDEO OUT connector let users connect an external monitor or printer for documentation. Today, units like the K100D remain useful for maintaining and debugging legacy digital systems, vintage microcomputer hardware, and any circuit environment where a period-correct instrument is needed or preferred.