BIOTRONIK Lumax 540 Manuel Technique page 23

387158--G_GA_Lumax540_mul.book Page 22 Friday, February 1, 2013 5:38 PM
Resistance to interference
With unipolar sensing, the requirements of EN 45502-2-2:2008 are met for interference
voltages  0.6 mV (peak to peak).
EMC requirements relating to section 27.5 are met as long as atrial sensitivity is set to
1.0 mV (corresponds to factory settings) or higher ( 1.0 mV). Appropriate measures
must be taken to assure interference-free therapy if more sensitive values are chosen.
Common mode rejection
Indication of rate in Hz, of common mode rejection in dB:
Rate Atrium Atrium
VR-T DX VR-T, DR-T, HF-T
CMRR (Common Mode Rejection Ratio)
16.6 67 65
50 80 80
60 81 75
ATP amplitude
Set parameters:
Burst
Amplitude
Pulse width
R-S1 interval
Number S1
Load resistance
Results:
ATP amplitude Value with tolerance Measured minimum Measured maximum
RV 7.5 V 1,5 V
Mean value —
LV 7.5 V 1.5 V
Mean value —
BiV 7.5 V 1.5 V
Mean value —
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V right V left
64 64
67 64
66 63
Value
7.5 V
1.5 ms
300 ms
5
500 
7.42 V 7.50 V
5.18 V 5.18 V
7.50 V 7.50 V
5.18 V 5.18 V
7.42 V 7.50 V
5.16 V 5.18 V
Sensitivity setting
Indication of minimum and maximum of automatic sensitivity setting; measurement of
the actual values with positive and negative polarity:
Note: The programmed atrial sensitivity is intensified by a factor of 5 for 
Lumax 540 VR-T DX.
Sensitivity Test signal wave
shape
A: positive [mV] 2
sin 15 ms
Standard triangle
A: negative [mV] 2
sin 15 ms
Standard triangle
VR-T DX: A: positive 2
sin 15 ms
[mV]
Standard triangle
VR-T DX: 2
sin 15 ms
A: negative [mV]
Standard triangle
RV: positive [mV] 2
sin 40 ms
Standard triangle
RV: negative [mV] 2
sin 40 ms
Standard triangle
LV: positive [mV] 2
sin 40 ms
Standard triangle
LV: negative [mV] 2
sin 40 ms
Standard triangle
22
Value Tolerance Measured
value
0.2 0.2 ... 0.5 0.26
— 0.41
0.2 0.2 ... 0.5 0.28
— 0.43
0.2 0.02 ... 0.10 0.08
(0.1 - 0.5)
— 0.08
0.2 0.02 ... 0.10 0.10
(0.1 - 0.5)
— 0.12
0.5 0.3 ... 0.7 0,56
— 0.58
0.5 0.3 ... 0.7 0.45
0.58
0.5 0.3 ... 0.7 0.64
0.65
0.5 0.3 ... 0.7 0.54
— 0.68