Users Manual

15. Specification
80
ECG
Numbers of Lead
Electrode:
3-electrode, 4-electrode, or 5-electrode
(Limb+Chest) lead cable
Numbers of Input Channel: 1CH (3-electrode) or 2CH
A
ccuracy of Sensitivity: Complies with IEC 60601-2-27: 2011 and
201.12.1.101.1
(±20% or 100uV, whichever is greater.)
ECG Input Impedance: Complies with IEC 60601-2-27: 2011 and
201.12.1.101.3
(2.5MΩ and above)
Input Dynamic Range and
Offset Voltage:
Complies with IEC 60601-2-27: 2011 and
201.12.1.101.2
(Input dynamic range: ±5 mV
Offset voltage: ±300 mV
Change of amplitude caused by offset voltage:
Within ±10%)
Common Mode Rejection
Ratio:
Complies with IEC 60601-2-27: 2011 and
201.12.1.101.10
(Less than 1mVp-p (RTI))
HR Measurment
Detection:
Complies with IEC 60601-2-27: 2011 and
201.12.1.101.15
(HR Measurement Accuracy:
Less than ±10% or ± 5bpm, whichever is greater
HR measurement range and accuracy are as
follows.
HR measurement range: 0, 12 bpm to 300 bpm)
HR Display Range: QRS Detection Wide: 0, 12 bpm to 300 bpm (1bpm
increment)
QRS Detection Narrow: 0, 30 bpm to 300 bpm
(1 bpm increment)
Frequency Characteristic: 0.5 Hz to 40 Hz (within -3dB)
Time Constant: 0.4 sec ± 25%
Can be switched to 0.1 sec ± 25%
Rejection of Pacemaker
Pulse:
a) Pacemaker Pulse without Over/Undershoot
Capable to reject pulses of pulse width 0.1 ms to
2 ms, amplitude ±2 mV to ±700 mV
b) Pacemaker Pulse with Over/Undershoot
Rejection is not possible.
Protection to Defibrillation: Complies with IEC 60601-2-27
Lead-off Detection Current: 100 nA and below
Tall T-wave Rejection
Capability:
1.2 mV T-wave can be removed when tested
according to IEC 60601-2-27
A
verage of Heart Rate: HR measured from 6 seconds of heartbeat for
setting QRS width: wide, and 4 seconds of
heartbeat for setting QRS width: narrow.
Response time of heart
rate meter to change in
heart rate:
HR change from 80 bpm to 120 bpm:
Range 6 sec. to 11 sec.
HR change from 80 bpm to 40 bpm:
Range 6 sec. to 11 sec.
Sweep speed: 12.5 mm/s