Environmental
Category
Specification
Operating/
Maintenance
Temperature
0 – 50°C (32 – 122°F)
Humidity
5% – 95% (non-condensing)
One Hour Operating
Temperature Limit
(extreme cold)*
-20°C (-4°F)
Air Pressure
700 to 1060 hPa (21 to 31 inHg)
Standby/Storage/
Transport
Temperature
0 – 50°C (32 – 122°F)
Humidity
5% – 95% (non-condensing)
Air Pressure
500 to 1060 hPa (15 to 31 inHg)
Altitude
-150 to 4500 meters (-500 to 15,000 feet) per
MIL-STD-810F 500.4 Procedure II
Shock/Drop Abuse Tolerance
MIL-STD-810F 516.5 Procedure IV 48 in, (1.2 meters), any edge,
corner, or surface, in standby mode
Vibration
MIL-STD-810F 514.5 Category 20 (Ground)
RTCA/DO-160D, Section 8.8.2, Cat R, Zone 2, Curve G (Helicopter)
RTCA/DO-160D, Section 8, Cat H, Zone 2, Curves B & R (Jet Aircraft)
Sealing/Water Resistance
IEC 60529 class IP55; Dust Protected, Protected against water jets
(Battery pack installed)
ESD and EMI (radiated and immunity)
Refer to Chapter 10 for details
Radio Frequency Emissions Applicable
Directive and Standards
R&TTE Directive 1999/5/EC
ETSI EN 300 220-2 V2.1.2 (2007-06)
ERC RECOMMENDATION 70-03
ETSI EN 301 489-3 V1.4.1 (2002-08)
Aviation
Meets RTCA/DO-160G, Section 21, RF Radiated Emissions,
Category M
*From room temperature to temperature extreme, one hour duration, updated specification for DDU-2000 Series AEDs running software revision 2.4 or above.
Patient Analysis System
The DDU-2000 Series AED assesses proper pad/patient contact by measuring the impedance between the pads. To
measure this impedance, 8 and 16 kHz sine waves at 74 uA peak-to-peak maximum current are applied to the patient.
The DDU-2000 Series Patient Analysis System ensures that the patient impedance is within the proper range and
analyzes the patient’s ECG rhythm to determine whether a shock is required. On detection of a non-shockable
rhythm, the user is prompted to perform CPR. For shockable rhythms, the AED automatically charges in preparation
for shock delivery.
The patient analysis system identifies and removes artifacts from the patient’s ECG signal. Artifacts may arise from
a variety of sources, including: noise, patient motion, respiration, muscular contractions, and pacemakers. Artifact
that is caused by the patient or electrical noise may interfere with accurate rhythm analysis. When this artifact is
present, the AED will prompt the user to “Stop Motion” or “Stop Interference” until the ECG signal is free of noise
and then proceed to analysis.
Defibtech DDU-2000 Series AED (continued)
9.
Tec
hnical Specifications
53
DAC-U2510EN-BF rev H
