Illumination tester HRS200

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Overview / Origins
Wearable devices using PPG (photoplethysmography) for non‑invasive heart‑rate measurement are essential to modern healthcare monitoring. Traditional verification checked only LED/detector function and could not reproduce realistic PPG signals for algorithm validation. The HRS200 generates green‑light PPG signals with adjustable parameters (BPM, DC to represent skin tone reflectance, AC for arterial volume variation, and PI) so engineers can perform repeatable performance and accuracy tests on wearable heart‑rate functions. The unit also overlays electrical noise (50 Hz / 60 Hz and white noise) and can play back raw or clinically recorded PPG waveforms to reproduce clinical or user‑defined signals for full signal‑processing verification.

Functions

• Adjustable BPM, DC, AC and PI to accurately simulate real PPG conditions for wearable devices.
• Electrical noise generation including 50 Hz, 60 Hz and adjustable white noise amplitudes to assess immunity and filtering.
• LED brightness and frequency detection: set brightness range and maximum pulse count to verify DUT LED pulse behavior and sensor response.
• Raw data playback: supports PPG waveform playback and clinically recorded/user‑defined waveforms for algorithm validation.
• Command mode: auto‑generate test command scripts; edit sequences and save command files to reproduce test flows.
• Includes 40 clinically recorded PPG waveforms covering arrhythmias such as AF, APC, VPC and 1st‑degree AV block for realistic validation.

Highlights

• Performance‑focused PPG heart‑rate simulator designed for R&D and verification of wearable heart‑rate functions.
• Playback of clinical databases and user signals to evaluate DUT interpretation and algorithm robustness.
• Provides SDK for automated testing and control to reduce repetitive manual setups.
• Supports fine‑tune mode, standalone presets and PC software high‑resolution measurement modes for versatile test workflows.

Ordering / System Composition (summary)
Model No.: HRS200 — Advanced PPG heart‑rate simulator for healthcare wearables. Supports fine‑tune, raw‑data playback and command‑line test modes. Optional accessories: USB isolator. Optional software add‑on: clinical PPG playback pack including 40 clinically recorded PPG waveforms (25 records with arrhythmias). Optional calibration and warranty extension services available.

Technical characteristics / specifications

• BPM: Supported range 30 ~ 300 BPM (PC software); 30 ~ 240 BPM (standalone). Accuracy: ±1 BPM.
• DC (PC software HRS mode): 1 ~ 20 level. Accuracy: N/A.
• DC (PC software Fine Tune mode): 100 mV ~ 2500 mV. Accuracy: ±5 mV.
• PI (PC software HRS mode): 0.1% ~ 20% (AC/DC, varies with DC level). Accuracy: N/A.
• AC (PC software Fine Tune mode): 0.75 mV ~ 25 mV (BNC measurement magnified 100×). Accuracy: N/A.
• Lumen (5 mm from diffusion film): 50 ~ 800 Lux. Accuracy: ±3% (±10 Lux when source < 400 Lux).
• Light wavelength: 525 nm. Accuracy: ±10 nm.
• PD sampling rate: <8 ksps (Normal mode); 30 ksps (High Resolution mode). Accuracy: ±5 μS.
• S/N ratio: >51 dB (with USB isolator). Accuracy: N/A.
• Power - USB: USB Type‑B connector, DC 5V IN.
• Power - Battery: 3 × AA batteries.
• Size (L × W × H): 6.12 cm × 13.5 cm × 7.6 cm.
• Operating temperature: 10 °C ~ 40 °C.
• Notes: In standalone mode heart rates selectable from presets (30, 60, 70, 80, 90, 120, 150, 180, 210, 240 BPM) plus 3 user‑selectable values between 30 and 300 BPM. Under High Resolution Mode select “LED Off” to disable optical emission for analog PD observation via BNC to oscilloscope.