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BIOTRONIK ProMRI Estella SR Manual Tecnico página 21

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Technical Data
Mechanical Characteristics
Measurements for the housing
Device
W x H x D [mm]
DR-T
53 x 44.5 x 6.5
DR
53 x 43 x 6.5
SR-T
53 x 39 x 6.5
SR
53 x 39 x 6.5
Note: D = housing without header
X-ray identification
BIO SF
Materials in contact with body tissue
• Housing: titanium
• Header: epoxy resin
• Coating, if applicable: silicone
Electrical Characteristics
Components and input values
Electrical characteristics determined at 37°C, 500 ohm
Circuit
Input impedance
Pulse form
Polarity
Housing shape
The device housing has the following shape:
Device type
Uncoated
Coated
3
Mass [g]
Volume [cm
]
12
25
11
26
11
24
10
25
Hybrid electronics with VLSI-CMOS chip
> 10 kOhm
Biphasic, asymmetric
Cathodic
Dual-chamber, single-chamber
Flattened ellipsoid
Electrically conductive surface
The device housing has the following surface:
Device type
2
Uncoated [cm
]
2
Coated [cm
]
Pulse form
The pacing pulse has the following form:
The pulse amplitude reaches its maximum value at the beginning of the pulse (Ua).
With increasing pacing duration (tb), the pulse amplitude is reduced dependent on the
pacing impedance.
Resistance to interference
All variants of BIOTRONIK devices comply with the requirements of 
prEN 45502-2-1: 2006, § 27.5.1 at the highest sensitivity.
Telemetry
Telemetry data for Home Monitoring:
Nominal carrier frequency
403.62 MHz
Industry Canada
Telemetry data
• This device must not interfere with stations operating in the 400.150 - 406.000 MHz
band in the meteorological aids, meteorological-satellite, and earth exploration-
satellite services and must accept any interference received, including interference
that may cause undesired operation.
20
Dual-chamber, single-chamber
33
7
Maximum power of transmission
< 25 µW
-16 dBm

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Promri estella sr-tPromri estella drPromri estella dr-t