Electrical safety tester DFS400

loadvoltagefor external defibrillators

Overview
Designed for engineers at AED/defibrillator manufacturers, the DFS400 from WhaleTeq integrates multiple testing instruments and functions into a single device. Dedicated software displays and automatically saves test data (shock waveform, energy in J, parameters and characteristic points) to build a traceable test history. The unit includes switchable built-in impedance loads to evaluate shock performance under various conditions and offers Repeatability & Reproducibility (R&R) analysis to compare multiple shock waveforms for consistency (R&R module optional).

Functions

• Outputs shockable and non-shockable ECG signals (VF coarse/fine, VT, AF, Asystole, Normal Sinus Rhythm).
• Measures shock waveform and energy: displays waveform, Joules, parameters and characteristic points with 4 μs sampling resolution; voltage and time cursors for detailed inspection.
• Basic waveform output: generates Sine, Square, Triangle waveforms with adjustable BPM, frequency and amplitude; configurable ECG waveforms for basic verification.
• Switchable loads: built-in resistances (25, 50, 75, 100, 125, 150, 175, 200 Ω) selectable via software to simulate physiological conditions.
• Raw data playback: supports playback of ECG databases and reproduction of clinically recorded or user-defined waveforms for repeated verification.
• Simple automated testing: 'Auto Sequence' organizes and stores frequently used test items for automated runs.
• Shock waveform and energy analysis: R&R analysis compares multiple waveforms and computes energy mean and standard deviation for quality confirmation (optional add-on).
• SDK available to develop custom automated test software and integrate with production test workflows.

Highlights

• Single device replaces multiple instruments (defibrillation analyzer, external load box, oscilloscope), reducing setup complexity and inter-device interference.
• Quick parameter setup via dedicated software with pass/fail criteria for adult/child modes per impedance value.
• Automatic raw data storage: complete shock waveform data saved for a traceable test history.
• R&R analysis capability supports endurance and consistency testing (separate purchase for R&R module).
• SDK provided for flexible automation and to reduce repetitive operator tasks.

Energy Measurement Specifications
Maximum Energy: up to 600 J; Accuracy: ±1% of reading ±1 J up to 360 J; ±1% of reading ±1 J (typical) for 360–600 J. Voltage: up to ±3000 V; Accuracy: ±(1% of reading +1 V) for |450–3000 V|; ±(1% of reading +2 V) for -450 V – 450 V. Current: 1.2 – 100.0 A; Accuracy: ±(1% of reading +0.1 A). Load Resistance: 25, 50, 75, 100, 125, 150, 175, 200 Ω. Energy Accuracy: For 50 Ω: ±1% of reading ±0.1 J up to 360 J; ±1% of reading ±0.1 J (typical) for 360–600 J. For other resistances: ±2% of reading ±0.1 J up to 360 J; ±2% of reading ±0.1 J (typical) for 360–600 J. Pulse Trigger Level: 60 V. Pulse Width: 1.0 – 60.0 ms; Accuracy ±0.05 ms. Sample Rate: 250 kHz (4 μs sample). Maximum Average Power: 24 W (equivalent to 1 defibrillation pulse of 360 J every 15 seconds).

ECG Signal Specifications
Ventricular Fibrillation - Coarse: Vp-p = 3 mV. Ventricular Fibrillation - Fine: Vp-p = 0.5 mV. Ventricular Tachycardia (≈180 BPM): Vp-p = 3 mV. Ventricular Tachycardia Plus (≈234 BPM): Vp-p = 3 mV. Atrial Fibrillation: Vp-p = 1.2 mV. Asystole: Vp-p = 0.03 mV. Normal Sinus Rhythm (NSR) 20–360 BPM (1 BPM step): Vp-p 0.25 – 5.0 mV, step 0.5 mV. User-defined Pattern (max. 5 kHz sample rate): load up to 1000 seconds total of raw data files to device memory; Play Data supports direct playback of raw files from a computer with no file size limit. RCA Output Amplitude Range: 1:875. RCA Output Amplitude Accuracy: <7.5% Vpp, typical ±5% Vpp.

ECG Performance Waveform Parameters (selection)
Sine/Triangle/Square Frequency: 1–10 Hz; Amplitude: 0.25–5.0 mV. ECG Frequency: 0.33–6 Hz (step 1 Hz); P Amplitude 0–2 mV; R Amplitude 0–5 mV; T Amplitude 0–4.37 mV; PR Interval 0–200 ms; QRS Duration 5–200 ms; QT Interval 100–900 ms; P Duration 50–100 ms.

General Specifications
Operating Temperature: 0°C – 50°C (32°F – 122°F). Storage Temperature: -20°C – +60°C (-4°F – +140°F). Humidity: 10% – 90% non-condensing. Communications: USB Type-C; Operation Modes: Remote (PC Software via API and SDK). Power: DC 12 V power adaptor. Mechanical: Housing ABS plastic; Size (L x W x H): 24.0 x 24.0 x 6.0 cm; Weight: 1.6 kg.

Compliance Specifications
Safety Standards: CE: IEC/EN 61010-1:2010 + A1:2016; Pollution degree 2; 61010-2-030:2017. EMC Standards: CE EN61326-1; FCC: EMC P15B.

Package Contents (standard)

• DFS400 x 1
• DC12V power adaptor x 1
• Open-ended AED cable (Banana Male, 0.5 m, Black) x 1
• Open-ended AED cable (Banana Male, 0.5 m, Red) x 1
• Compact splicing connector x 2
• USB transfer cable: Type-A to Type-C (Male to Male, 1.8 m) x 1
• RCA to BNC cable (73.8 cm) x 1

Optional Accessories & Add-ons

• Optional paddle box set and docking base (various part numbers).
• Optional accessories: additional DC12V adaptor, RCA-to-BNC cable, open-ended AED cables, compact splicing connector, USB transfer cable.
• Optional software add-ons: Repeatability & Reproducibility Analysis module (optional purchase), Barcode Scanner License.
• Optional calibration service and warranty extension options (3-year calibration coverage, warranty extension to 3 years).

Technical Specifications

• Model: DFS400
• Brand: WhaleTeq
• Maximum Energy: up to 600 J; accuracy ±1% reading ±1 J (up to 360 J), typical ±1% (360–600 J).
• Voltage Range: up to ±3000 V; Current Range: 1.2–100.0 A.
• Built-in switchable loads: 25 / 50 / 75 / 100 / 125 / 150 / 175 / 200 Ω.
• Energy accuracy (50 Ω): ±1% reading ±0.1 J (up to 360 J).
• Sampling: 250 kHz (4 μs).
• Pulse width: 1.0–60.0 ms; trigger level 60 V.
• Max avg power: 24 W (360 J pulse every 15 s equivalent).
• ECG outputs: multiple arrhythmia waveforms and user-defined waveform playback (up to 5 kHz sample for user-defined).
• Communications: USB Type-C; SDK and API support for automation.
• Power supply: DC12V adaptor.
• Dimensions & Weight: 24.0 x 24.0 x 6.0 cm; 1.6 kg.
• Safety & EMC: IEC/EN 61010-1, 61010-2-030; EN61326-1; FCC EMC P15B.