Philips M3860A Instructions For Use Manual page 70

B-2
category
EMI (Immunity)
Aircraft: Method
category
Waveform Parameters
M3860A/M3861A HEARTSTART FR2+
Meets EN 60601-1-2 limits (1993), method EN 61000-4-3:1998 Level 2 (3 V/m
and 10 V/m at 26 MHz to 1 GHz).
Meets RTCA/DO-160D:1997 Section 21 (Category M - Charging).
Defibrillator
Biphasic truncated exponential. Waveform parameters are automatically adjusted as a
function of patient defibrillation impedance. In the diagram at left, A is the duration of phase
1 and B is the duration of phase 2 of the waveform, C is the interphase delay, V
voltage, and V the final voltage.
f
The HeartStart FR2+ delivers shocks to load impedances from 25 to 180 ohms.
The duration of each phase of the waveform is dynamically adjusted based on
delivered charge, in order to compensate for patient impedance variations, as
shown below:
load
resistance (ohms) duration (ms)
25
50
100
125
150
(using M3870A FR2 infant/child reduced-energy defibrillator pads)
load
resistance (ohms) duration (ms)
25
50
100
125
150
NOTE: The values given are nominal. Because of the effect of the M3870A FR2
infant/child pads' attenuation circuitry on the defibrillator's impedance
compensation feature, the actual phase durations for a given load resistance on
the table above could be those of an adjacent row.
nominal specifications
nominal specifications
adult defibrillation
phase 1 phase 2
duration (ms)
2.8 2.8
4.09 4.09
9.0 6.0
12.0 8.0
12.0 8.0
pediatric defibrillation
phase 1 phase 2
duration (ms)
4.1 4.1
5.8 3.8
7.2 4.8
7.2 4.8
9.0 6.0
is the peak
p
delivered
energy (J)
140
150
157
161
157
delivered
energy (J)
35
48
55
54
55