User Manual for Vital Signs Monitor
37
Chapter 6 Technical Specifications
6.1 ECG Monitoring
1. Input signals range in amplitude: ± (0.5 mVp ~ 5 mVp)
2. Heart rate display range: 15 bpm ~ 350 bpm
3. Heart rate display accuracy: ± 1% or ± 2 bpm, whichever is greater.
4. Heart rate averaging: Averages the recent eight beats having RR intervals falling within the
acceptable limits.
5. Heart rate alarm delay time:
≤
10s
6. Response time to change in heart rate:
Change from 80 bpm to 120 bpm: < 8 sec
Change from 80 bpm to 40 bpm:
< 8 sec
7. Tall T-wave rejection:
Rejects all T-wave less than or equal to 120% of 1mV QRS.
8. Sensitivity selection:
×1/4, 2.5mm/mV
tolerance: ± 5%
×1/2, 5mm/mV
tolerance: ± 5%
×1,
10mm/mV
tolerance: ± 5%
×2,
20mm/mV
tolerance: ± 5%
9. Sweeping speed: 25mm/s
tolerance: ±10%
10. ECG noise level:
≤
30
μ
V
P-P
.
11. ECG input loop current:
≤
0.1
μ
A
12. Differential input impedance:
≥
5M
Ω
13. Common-mode rejection ratio (CMRR):
≥
105dB
14. Time constant:
≥
0.3s
15. Frequency response: 0.67 Hz~40 Hz (
＋０．４ｄＢ
－３．０ｄＢ
)
