3‑Channel ECG Machine

7″ Color TFT Display – High Resolution 800×600 dpi

Key Features

7‑inch high‑resolution color touch screen

12‑lead simultaneous acquisition and real‑time display

Automatic ECG measurement and interpretation

Comprehensive digital filters to suppress baseline drift, AC interference, and electromyographic (EMG) noise

Compact, lightweight design

Expandable memory via USB flash drive and micro SD card

Software upgradeable through USB/SD card

Built‑in rechargeable lithium‑ion battery

Technical Specifications

Parameter Specification

Lead system Standard 12 leads

Acquisition mode Simultaneous 12‑lead acquisition

Measurement range ±5 mVpp

Input circuit Floating; protected against defibrillator effect

Input impedance ≥50 MΩ

Input circuit current <0.05 μA

Recording modes Automatic: 3CH×4+1R, 3CH×4, 3CH×2+2CH×3, 3CH×2+2CH×3+1R, 6CH×2

Manual: 3CH, 2CH, 3CH+1R, 2CH+1R

Rhythm: any lead selectable

Filters EMG: 25 / 30 / 40 / 75 / 100 / 150 Hz

DFT (baseline drift): 0.05 / 0.15 Hz

AC: 50 / 60 Hz

CMRR >100 dB

Leakage current <10 μA (at 220‑240 V)

Frequency response 0.05 Hz – 150 Hz (−3 dB)

Sensitivity 2.5, 5, 10, 20 mm/mV (accuracy: ±5%)

Anti‑baseline drift Automatic

Time constant 23.2 s

Noise level <15 μV_p‑p

Paper speed 12.5, 25, 50 mm/s

Recording method Thermal printing system

Paper specification Roll paper – 80 mm × 20 m

Safety standard IEC I/CF

Sampling rate 1000 samples/second per channel (normal mode)

Power supply AC: 100–240 V, 50/60 Hz, 30–100 VA

DC: 14.8 V / 2200 mAh (built‑in Li‑ion battery)