Model note · ECG

GE HealthCare MAC 5500 HD Resting ECG Analysis System

Name: GE HealthCare MAC 5500 HD Resting ECG Analysis System
Brand: GE HealthCare MAC

The MAC 5500 HD is a cart or desktop resting electrocardiograph that acquires, analyses, displays and prints 3, 6, 12 or 15 lead ECGs for adult and paediatric patients, running GE's Marquette 12SL interpretation. Its distinguishing hardware feature is the external CAM HD acquisition module, which digitises the signal close to the patient before it reaches the main unit. It has a thermal writer, NiMH battery, SD card storage and optional wired or wireless transfer to the MUSE cardiology information system.

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The model

Maker, model and type.

Maker: GE Medical Systems Information Technologies, Inc. (GE HealthCare)
Model: MAC 5500 HD Resting ECG Analysis System
Device type: ECG
Main document: Open the public document

Key specifications

What the public record says.

Item	Value	Source
Leads and channels	15 lead (14 channel) automatic electrocardiograph; 3, 6, 12 or 15 lead reports	Source
Sampling	4000 samples/s per channel digital sampling; analysis at 500 samples/s	Source
Frequency response	-3 dB at 0.01 to 150 Hz (0.01 to 250 Hz for Hi-Res and PHi-Res signal averaged input)	Source
Dynamic range and resolution	AC differential plus or minus 5 mV, DC offset plus or minus 320 mV; 4.88 uV/LSB at 250 sps, 1.22 uV/LSB at 500 sps	Source
Common mode rejection and input impedance	Above 140 dB (123 dB with AC filter off); input impedance above 10 Mohm at 10 Hz, defibrillator protected	Source
Pace detection	750 uV at 50 us duration, orthogonal LA, LL and V6	Source
Writer	Thermal dot array; 5, 12.5, 25 or 50 mm/s; speed accuracy plus or minus 2%, amplitude accuracy plus or minus 5%; A or A4 z-fold paper	Source
Storage and display	Up to 200 ECG records in internal memory plus SD card archive; 10.4 in (264 mm) 640 x 480 LCD	Source
Power and battery	100 to 240 VAC, 50 to 60 Hz; user replaceable 18 V 3.5 Ah NiMH pack, about 100 single page reports or 6 hours without printing, about 4.5 h recharge	Source
Size, weight and electrical safety class	38.1 x 35.1 x 9.4 cm, 6.8 kg without paper; Class I, internally powered; Type BF defibrillation proof patient cable; patient leakage below 10 uA	Source
FDA clearance	K110266 (MAC 5500 HD and MAC 3500), product code DPS, Class II, decided 29 April 2011; predicate MAC 5500 K073625	Source

Recalls

Recalls.

This note lists no recalls. Check the FDA recall database for the latest record.

Safety

Safety warnings from the record.

A qualified physician must overread every computer generated interpretation; it is only meaningful alongside clinical findings. Source
Where defibrillation is possible, use non-polarising silver or silver chloride electrodes, since polarising electrodes can hold a residual charge that blocks the ECG. Source
This is Class I equipment; if the protective earth is in doubt, run the unit from its battery. Source
Do not use near flammable anaesthetic vapours, and keep nearby equipment EMC compliant because X-ray and MRI systems can interfere. Source
Never immerse, autoclave or steam clean the unit, cables or leadwires, and avoid ammonium chloride, alcohol based and abrasive cleaners. Source

Sources

Where this note comes from.

Not covered: No FDA recall record names the MAC 5500 or MAC 5500 HD; the GE electrocardiograph recalls in openFDA cover the MAC VU360 and MAC 800, so the recalls list is empty. The service manual is a third party hosted copy of GE's version 10 document (2046275-017G) rather than a GE download, and revisions may differ. The manual has no numeric error code list, only symptom messages, so the error entries are on screen messages. MAUDE has only single figure problem counts for this brand, too few to show a trend. Part numbers were left out on purpose.

BMEssentia knowledge drafted from public information, reviewed by Hasan Khaled Ismail on 2026-10-24. Always follow the manufacturer's instructions for use and service manual.

ECG