Parameter box
Electrocardiogram (ECG)
Input.........................................: Isolated; IEC type CF; for ECG leads with 3, 4 or 5 electrodes; colour-coded red.
Input impedance .......................: > 20 M
Ω
at 10 Hz
> 4 M
Ω
at 40 Hz
Leads .......................................: 1, 2, 3 or I, II, III, AVR, AVL, AVF, V
Display .....................................: Position can be configured as required.
Input voltage .............................: Max. 6 mV peak
Graph display ...........................: 0.5 to 8 mV
DC offset..................................: Max. 300 mV (only if filter set to »
On
«)
Bandwidth ................................: 0.5 to 30 Hz (– 3 dB) with filter set to »
On
«
0.05 to 70 Hz (– 3 dB) with filter »
Off
«
Interference suppression
(50/60 Hz) ................................: With ECG lead and 5 kohm unbalanced: > 127 dB
Output impedance ....................: < 10
Ω
, output current < 1 mA, short-circuit-proof.
Noise........................................: < 25
µ
Vpp with an impedance of 51 k
Ω
// 0.047
µ
F to each neutral line per electrode.
Zero stabilization.......................: Automatic; when mean peak value exceeds display range.
Stabilization time.......................: < 0.5 s; artefact message and alarm after 15 seconds.
Pacemaker pulses ....................: Automatically magnified on display when detection function active. Not counted in
the majority of cases.
Defibrillator ...............................: Protected against defibrillation shocks; synchronization pulse available.
Socket receptacle, outer contact:
Ground
Socket receptacle, inner contact:
TTL output with 15 ms pulse duration
Maximum retardation relative to R-wave:
26 ms
Heart rate/pulse rate
Source of heart rate/pulse rate..: Derived from the 1st ECG, SpO
2
, and iBP.
Heart beat indication.................: Acoustic and visual; acoustic indication derived from SpO
2
value
(can be programmed).
Frequency ................................: Over approx. 10 beats on average.
Measuring range.......................: 30 to 300 beats per minute.
Accuracy ..................................: 1 beat/minute or 1%.
Resolution ................................: 1 beat/minute
Pulse deficit indication ..............: Difference between heart rate (derived from ECG) and pulse rate
(derived from SpO
2
).
Detection of asystole/
ventricular fibrilation ..................: Cannot be deactivated; asystole alarm after 6 seconds; ventricular fibrillation
detected after approx. 3 seconds; not available for children.
S-T segment analysis ................: Amplitude:
±
3 mV
Resolution:
0.01 mV
Max. heart rate:
150 beats per minute
Only active in adult mode and only if
»S-T segment analysis«
has been selected.
Must not be undertaken with HF-shielded ECG leads!
Technical data
157
