56
1.20
The range of voltage input
Each lead should no less than 0.03 to 5mV and the waveform should be correct.
1.21
Tolerance of Weighted parameters
Should be no more than
±
10%
。
1.22
Waveform identification and amplitude-time parameters measurement
Should match with the waveform shown in A.1,A.2 and A.3 in appendix JJG 1041-2008.
The testing result comply with the value range of A.1.1
～
A.1.4
，
A.2.1
～
A.2.2 in appendix
JJG 1041-2008.
1.23
Voltage measurement tolerance
Should not excess the value range of table A.1.1
～
A.1.4 in appendix JJG 1041-2008
1.23.1
Measurement tolerance of time interval
Should not excess the error range of table A.2.1, A.2.2 in Appendix JJG 1041-2008
Appendix C Specification
C.1 Technical Index
1) Main Machine
Lead
Standard 12 Leads
Sampling Method
12 leads simultaneously
Measurement Parameter
HR, PR interval, QRS duration, QT/QTC, R/QRS/T electric
axis, RV5/SVI amplitude
Input Method
Floating Ground input with defibrillator protection
Manual Mode (Manual 1 lead, Manual 2 Lead, Manual 3 Lead,
Manual 6 Lead)
Rhythm Mode
Recording Mode
Auto Mode
（
3CH
×
4, 3CH
×
4+1 rhythm, 3CH
×
4+3rhythm, 6CH
×
2, 6CH
×
2+1rhythm
）
Filter
AC Filter: 50 Hz /60 Hz/ Off
EMG Filter: 30 Hz /40Hz/ Off
DFT Filter:0.05 Hz /0.15 Hz /0.25 Hz /0.5Hz/ Off
Input Circuit Current
≤
0.1
μ
A
Input Impedance
≥
50 M
Ω
（
10 Hz
）
