| standard five leads connection | Red:R Yellow:L Green:F Black:N White:C |
| Overload protection | 1V minimum 1V |
| Measurement mode | Diagnosis mode,monitor mode,surgical mode |
| Respiration,Lead off condition detected and active noise
suppression | Active lead of DC current | ≤0.1μA |
| The current jointed by electrode for any other patients | ≤1μA |
| Lead off detected waveform | U=2V I=0.04uA |
| active noise suppression | the electric current which don’t apply to the body of patients. |
| Tall T -wave suppression | 1.4mV |
| QRS wave detected | Range(p-v RTI) | not less than 0.5～5mV |
| Width(adult) | Not less than 70～120ms |
| WIDTH(newborn/children) | Not less than 40～120ms |
| No response for the following signals | Range(p-v RTI) | no response under0.15mV |
Width when the range is 1mv
| no response under 10ms |
| Power frequency voltage tolerance(p-v RTI) | ≥100μV |
| Drift tolerance(0.1HZ signal superimposes on a bunch of QRS WAVE | when the triangular wave signal of 0.1HZ,4MV superimposes on the
wave signal of 05.mv, 100ms, 80bpm, heart rate display
accuracy:80bpm. |
| Averaging calculation method of Heart rate | averaging by taking 4-12 R wave cycles |
| Heart rate display refresh rate | 1s |
| Responsive time of heart rate changes | 80-120 BPM:Range 4-7 seconds average 6 seconds 80-40 BPM: Range 4-7 seconds average 6 seconds
|
| The range and accuracy of heart rate meter | Range(adult) | not less than 30-200 bpm |
| Range(newborn/children) | not less than 30-250 bpm |
| error | ≤±10% |
| Repetition rate=300 bpm( adult mode) signal display heart rate | 300 bpm |
| Repetition rate=350 bpm(newborn/children mode)signal display heart
rate | 350 bpm |
| Alarm range | Upper limit(adult) | not less than 100-200bpm |
| Upper limit(newborn/children) | not less than 100-250bpm |
| lower limit(adult/newborn/children) | not less than 30-100bpm |
| Alarm resolution | ≤±10% |
| The limit error of alarm | ≤±10% |
| The startup time of cardiac arrest alarm | ≤10s |
| The startup time of the low heart rate alarm | ≤10s |
| The startup time of the high heart rate alarm | ≤10s |
| Alarm silent | Provide silent and restart setup |
| Alarm is prohibited | Display alarm be prohibited |
| Input dynamic range | Input signal range | ±5mV |
| speed rate(RTI) | ≤320mV/s |
| DC offset voltage | -300～+300 mV |
| Input signal changes | ≤±10% |
| display can’t -work (display previous attenuation degree ) | ≤50% |
| Input impedance:signal attenuation(0.67HZ～40HZ) | ≤20% |
| System noise(p-v RTI) | ≤30μV |
| multi-channel crosstalk: No signal channel gets disturbed by
signaled channel | ≤5% |
| Gain select | 5mm/mv,10mm/mv At least having the gain select of 5mm/mv, 10mm/mv |
| Gain control methods | Manual switch |
| Gain stability | Gain change per minute | ≤0.66%/min |
| Total change of gain within 1 hour | ≤±10% |
| Benchmark choice and accuracy of time | Time benchmark | At least having 25mm/s time benchmark choice |
| The biggest error of time benchmark | ≤±10% |
| Output display the width of channel | At least having a channel whose width is 30mm |
| Output display aspect ratio | 10mm/mv 25mm/s AT least with aspect ratio of 0.4s/mv gear. The
corresponding gain and time benchmark respectively are 10mm/mv and
25mm/mv. |
| Typical minimum input slew rate | 50V/s RTI |
| The accuracy of the reconstruction of the input signal | Total error of system | ≤±20% |
| Frequency response | a) Sine-input | Under all the modes of 0.67-40hz attenuation:-3bm, upper limit:110% |
| b)Input 20ms-width trangle wave response | 0～25% The attenuation value of the wave crest:0-25% |
| To the response of the 0.3mv.s impact out of the range | shift | ≤0.1mV |
| Slope rate | ≤0.30mV/s |
| Electrode weighing factor | ≥±5% |
| Lag effect of drifting 15mm | ≤0.5mm |
| Calibration voltage | 1mv 1hz squire signal Error≤±10% |
| Commo mode rejection | ≤1mV |
| The baseline control and stability | Recovery time after reset | ≤3s |
| The drifting rate within 10 seconds | ≤10μV/s |
| baseline drifting within 1h | ≤500μV |
| Baseline drift under the working temperature | ≤50μV/℃ |
| The display ability of the pacemaker pulse | ≥0.2mV |
| Electric surgical interference suppression: The Heart rate
variation compared with before disturbance. | ≤±10% |
| protection | Isolation pressure- tolerant 4000V/50HZ,Anti-electric surgical
interference, anti-defibrillation protection |
| Recovery time after defibrillation | ECG waveform recovery to baseline within 5s under the mode of
monitor and surgery. |
| Recovery time after defibrillation(electrode polarization) | ECG waveform recovery to baseline within 10s under the mode of
monitor and surgery. |
| Recovery time to the electric surgical interference | ECG waveform recovery to baseline within 10s under the mode of
monitor and surgery. |
| No overshoot pacemaker suppression |
| Range±2mV～±700mV,Pulse width 0.1ms～2ms | QRSwave | instrument display |
| a) a single pacemaker pulse | No display |
| b)with the normal pacemaker of QRS-T pacemaker pulse | 60 | 60±2bpm |
| 30 | 30±2bpm |
| 0 | -- |
| c)with the ineffective pacemaker of QRS mode pacemaker pulse.In all
situations,overshoot should be less than 5% the range of pacemaker
and the settling time of the overshoot must less than 5μs .Rising
and falling time should be 10% of the pulse width , but can’t
greater than 100μs,Besides the starting moment of the pacemaker
pulse should before the starting moment of QRS composite wave. | no suppression, don’t for reference |
| when the ventricular atrial pacemaker pulse has the same range and
duration time with the ventricular pacemaker pulse
above-mentioned,also ahead of ventricle pacemaker pulse 150ms to
250ms. | No suppression, don’t for reference |
