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Electrocardiograph

Three-Channel Electrocardiograph ECG-301

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Three-Channel Electrocardiograph ECG-301

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Product data

Technical specifications

Key specifications and configuration details for Three-Channel Electrocardiograph ECG-301

Acquisition
Standard simultaneous 12-lead acquisition, 1000 Hz sampling, 12-24 bit A/D conversion; floating input with defibrillation protection and pacemaker pulse suppression.
Heart Rate
Heart rate measurement 30-300 BPM, calculation accuracy ±1 BPM, peak detection algorithm.
Signal Performance
Input impedance ≥50 MΩ (10 Hz); common mode rejection ratio (CMRR) >100 dB; insulation strength 4000 V rms; measurement range >±5 mV.
Sensitivity
Adjustable in multiple levels: 2.5, 5, 10 and 20 mm/mV.
Filters
Selectable EMG filter levels (25 Hz-150 Hz); low-pass filter 150/100/75 Hz; digital filtering suppresses baseline drift, EMG and power-frequency interference.
Printing
Thermal dot-matrix printing; 80 mm wide roll paper, 20 m long; paper speed 12.5/25/50 mm/s; X/Y axis recording accuracy ±5%.
Display Output
Touchscreen operation; displays 3/6/12-lead waveforms; supports rhythm leads and automatic baseline adjustment.
Recording Modes
Manual and automatic recording; timed printing (multiple levels from 1-60 minutes); waveform and medical record storage.
Alarms
Electrode detachment alarm and printer out-of-paper prompt.
Data Management
Medical record database storing patient information, with multilingual interface switching.
Power Supply
AC power plus built-in rechargeable lithium battery; automatic shutdown when idle and power failure protection.
Physical Parameters
Dimensions 253×200×52 mm; net weight 2.8 kg (including accessories).
FAQ

Frequently asked questions about Three-Channel Electrocardiograph ECG-301

Answers to common questions about product selection, use, and support.

It is a three-channel device; why does it support 12 leads?
Three-channel means that 3 traces are output simultaneously on the printout. The device performs simultaneous 12-lead acquisition internally and prints the ECG (electrocardiogram) data of all 12 leads in rotation according to the format, producing a complete 12-lead report.
The device often shows EMG interference with large waveform spikes. How should this be handled?
First have the patient relax fully to reduce muscle tremor. Adjust the EMG filter level. Prepare the skin properly to ensure good electrode-to-skin contact. Keep away from high-power electrical appliances to reduce ambient power-frequency interference.
Can it print at timed intervals? What time intervals are available?
Timed printing is supported, with automatic printing cycles of 1/2/3/5/10/20/30/60 minutes, suitable for scenarios requiring periodic recording of ECG changes.
What does pacemaker pulse suppression do? Can patients with pacemakers undergo the examination?
The pacemaker pulse suppression function filters out artifacts caused by pacemaker pulses, preventing the artifacts from interfering with automatic analysis results. It is suitable for ECG acquisition in patients with implanted cardiac pacemakers.
An electrode detachment alarm appears even though the electrodes are attached. What are the causes?
① Dried electrode gel or inadequate skin preparation causes high contact impedance; ② a loose lead wire connector or aged, damaged lead wires. Replace the electrodes and reattach them, check the lead wire connections, and replace the lead wires if necessary.
How is the battery operating time? Can it be used without mains power?
It operates on both AC and DC power and has a built-in rechargeable lithium battery, so it can work without mains power. It shuts down automatically when idle; charge it fully before use and charge and discharge it periodically to maintain the battery if it is not used for a long time.

Compliance Notice

This product is a medical device certified under NMPA, CE, ISO13485. It shall only be used by professional medical personnel in accordance with user manual and local regulations. Not for self‑diagnosis or self‑treatment. All information is for product display only, not medical advice.

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