Contec E3M Electrocardiograph – 3-Channel 12-Lead ECG Machine

The Contec E3M Electrocardiograph is a portable 3-channel, 12-lead digital ECG/EKG machine designed to simultaneously acquire, display, analyze, and print cardiac waveforms in clinical and hospital environments.

It provides simultaneous 12-lead acquisition, digital signal processing, built-in AC/baseline/EMG filters, automatic ECG measurement and interpretation, multiple thermal printing formats, internal case storage, USB connectivity, and dual AC/DC power with a rechargeable lithium battery.

✅ Key Features

• Portable 3-channel 12-lead ECG machine
• Simultaneous 12-lead ECG acquisition
• Digital signal processing
• Built-in AC, baseline and EMG filters
• High-resolution ECG display
• Multiple thermal printing formats
• Adjustable waveform length and timed printing
• Automatic ECG parameter measurement
• Automatic ECG interpretation
• Heart rate measurement
• PR interval measurement
• QRS duration measurement
• QT/QTc interval measurement
• Axis measurement
• Built-in pacing ECG detection
• Electrode-disconnection alerts
• Out-of-paper alerts
• Internal ECG case storage
• Historical record review and statistics
• USB connectivity
• Optional PC synchronization through ECG-Sync software
• AC/DC dual power supply
• Built-in rechargeable lithium battery

Simultaneous 12-Lead ECG Acquisition

The Contec E3M acquires all 12 ECG leads simultaneously, providing a comprehensive digital representation of cardiac electrical activity.

Digital signal processing helps produce clear ECG traces, while integrated filtering helps reduce unwanted interference.

Built-In Filters

The E3M incorporates:

• AC filter
• Baseline filter
• EMG filter

These filtering functions are designed to help reduce common sources of ECG signal interference and improve waveform readability.

High-Resolution ECG Display

The E3M features a high-resolution display that allows users to view ECG waveforms together with important operating information.

The display can show:

• ECG waveforms
• Operating status
• Filter modes
• Paper speed
• Sensitivity

This allows the operator to review important acquisition and recording settings while performing an ECG examination.

Thermal Printing System

The Contec E3M includes a thermal printing system with multiple recording layouts.

Supported printing modes include:

• Manual
• Auto 4×3
• Auto 3×4+1
• Auto 3×4
• Auto 2×6+1
• Auto 2×6

The machine also supports adjustable waveform lengths and timed print options, providing flexibility for different ECG recording requirements.

Automatic ECG Analysis & Interpretation

The E3M can automatically measure commonly used ECG parameters, including:

• Heart rate
• PR interval
• QRS duration
• QT interval
• QTc interval
• Axis measurements

It also provides automatic ECG interpretation to assist medical professionals in reviewing recorded ECG information.

Pacing ECG Detection

The Contec E3M includes built-in pacing ECG detection.

This feature helps identify ECG signals associated with pacing during ECG acquisition.

Smart Alerts & Prompts

The ECG machine provides automated prompts for certain operating conditions, including:

• Electrode disconnection
• Out-of-paper condition

These alerts help the operator identify common problems during ECG recording and printing.

ECG Data Storage & Review

The E3M provides internal case storage, allowing previously recorded ECG cases to be reviewed.

Stored information can also be used for record review and statistics.

USB Connectivity

The ECG machine includes a USB port for optional connection with a PC.

Using ECG-Sync software, ECG data can be synchronized with a computer for data management and review.

AC/DC Power & Rechargeable Battery

The Contec E3M supports dual AC/DC power operation.

It also incorporates a built-in rechargeable lithium battery, making the ECG machine suitable for portable clinical use when AC power is not immediately available.

Technical Specifications