Cardio Display Corp CD-200 Cardiac Monitor Electrically Isolated 15-Pin Input

Cardio Display Corp CD-200 Cardiac Monitor Electrically Isolated 15-Pin Input

The Cardio Display Corp CD-200 is a compact benchtop cardiac monitor designed for patient ECG/heart rate display. The front panel features Volume, Gain, and Freeze controls along with a single patient INPUT jack. The unit carries an "Electrically Isolated" designation, indicating a patient-safe isolated input circuit — a standard safety requirement for equipment making direct patient contact. Manufactured by Cardio Display Corp. of Elmont, New York.

Specifications & What's Included

• Manufacturer: Cardio Display Corp., Elmont, N.Y., U.S.A.
• Model / Part Number: CD-200
• Type: Cardiac Monitor (benchtop/desktop form factor)
• Front panel controls: Volume knob (with OFF position), Gain knob, Freeze control
• Patient INPUT jack on front panel
• Rear panel: 15-pin D-sub printer/data port
• Rear panel: 4-pin circular DIN patient lead wire connector
• Electrically isolated patient input circuit
• Enclosure: cream/beige metal housing with black angled front panel
• Includes: Medtronic patient lead wire (as shown in photos)
• Not included: power cord

Applications

The CD-200 is a cardiac monitor built for displaying patient ECG waveforms in a clinical or laboratory setting. Compact benchtop cardiac monitors of this type were used at patient bedsides, in procedure rooms, and in small clinical environments where a portable, self-contained heart monitoring display was needed. The electrically isolated patient input is a critical design feature — it protects patients from microshock by isolating the monitoring circuitry from the power line ground, a requirement governed by standards such as UL 544 (now UL 60601) for medical electrical equipment. Units like the CD-200 date from an era — roughly the 1970s through early 1980s — when dedicated standalone cardiac display monitors were common before integration into larger multi-parameter patient monitoring systems. Today, this type of unit is primarily of interest to collectors of vintage medical equipment, biomedical engineering training programs, and research or educational settings.