A-5
A.6 Wireless Network
Standards IEEE 802.11b/g/n, support Wi-Fi
A.7 Measurement Specifications
The adjustable range of alarm limits is the same with the measurement range of signals unless otherwise specified.
A.7.1 ECG
ECG
Standards Meet standards of EC11, EC13, EN60601-2-27/IEC60601-2-27 and IEC60601-2-25
Lead set
3-lead: I, II, III
5-lead: I, II, III, aVR, aVL, aVF, V
ECG standard AHA, IEC
Display sensitivity
1.25 mm/mV (X0.125), 2.5 mm/mV (X0.25), 5 mm/mV (X0.5), 10 mm/mV (X1), 20
mm/mV (X2), 40 mm/mV (X4)
Accuracy:
±10%
Sweep speed
6.25 mm/s, 12.5 mm/s, 25 mm/s, 50 mm/s
Accuracy:
±10%
Bandwidth (-3dB)
Diagnostic mode:
Monitor mode:
Surgical mode:
ST mode:
0.05 to 150 Hz
0.5 to 40 Hz
1 to 20 Hz
0.05 to 40 Hz
Common mode rejection ratio
(with Notch off )
Diagnostic mode:
Monitor mode:
Surgical mode:
ST mode:
≥90 dB
≥105 dB
≥105 dB
>105 dB(with Notch on)
Notch 50/60 Hz
Differential input impedance ≥5 MΩ
Input signal range ±8 mV (peak-to-peak value)
Accuracy of reappearing input signal Based on EC11 to determine system total error and frequency response.
Electrode offset potential tolerance ±500 mV
Lead-off detection current
Measuring electrode: <0.1 μA
Drive electrode: <1 μA
Input offset current ≤0.1 μA
Baseline recovery time <5 s (after defibrillation)
Patient leakage current <10 uA
Calibration signal
1mV (peak-to-peak value)
Accuracy:
±5%
ESU protection
Cut mode: 300 W
Coagulate mode: 100 W
Recovery time: ≤10 s
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