Preparing the Device Under Test (DUT) for IEC 63180 Compliance

Preparing the Device Under Test (DUT) for IEC 63180 Compliance

Platform: Fresnel Factory Scaled Performance Test (SPT) machine

Overview

IEC 63180 defines test conditions and procedures for evaluating motion detectors based on passive infrared (PIR) sensing.
Fresnel Factory’s SPT machine is a compliant evaluation system that can assess performance using a detector’s
simple on/off event signal; it also supports recording the signal amplitude when needed. For IEC 63180 testing specifically,
the amplitude capture is not required, so your DUT only needs to provide a clean detection (on/off) signal and a common ground.

What the SPT Machine Needs from the DUT

  • Detection Output (on/off): A single digital output that changes state when motion is detected.
    Configure the SPT machine to trigger on the edge (rising or falling) that matches your DUT’s output polarity.
  • Common Ground: Share ground between the DUT and the SPT machine to ensure a stable reference.

Learn about DigiPyro-based PIR modules

LowPower DigiPyro Application Note (PDF)

Electrical Interface Requirements

The SPT machine accepts logic-high inputs in the range of 3 V to 12 V, so typical 3.3 V or 5 V
PIR module outputs can be connected directly. To maximize signal integrity:

  • Output Level: 3.3 V or 5 V logic is recommended (both are compatible).
  • Drive/Impedance: The SPT input is high impedance (≈10 MΩ), so a standard MCU pin or buffer op-amp can drive it.
  • Damping (optional): A small series resistor (≈100–330 Ω) at the DUT output can reduce ringing on long or noisy runs.

Cabling and Layout Guidance

  • Length: Keep the detection line short—preferably ≤ 1 m—to minimize edge delay and noise pickup.
  • Cable Type: Use twisted pair (signal+GND) and shielding where practical.
  • Environment: During tests, minimize nearby EMI sources (e.g., Wi-Fi radios, high-power LEDs) and thermal disturbances that can influence PIR behavior.

Minimal Wiring: Example

Basic Connections between DUT and SPT Machine
Line DUT Pin SPT Input Signal Type Typical Level
Power VDD (3.3 V or 5 V) — — —
Ground GND GND (shared) Reference 0 V
Detection Motion/Interrupt Output Trigger Input On/Off (edge-triggered) 3–5 V logic

Note: The SPT machine can record signal amplitude if you provide an additional measurement connection. However, IEC 63180 testing does not require amplitude data—only the on/off detection signal is needed.

Pre-Test Checklist

  1. Confirm the SPT input range (3–12 V) matches your DUT output level (3.3 V or 5 V).
  2. Share ground between DUT and SPT; verify a solid, low-noise return path.
  3. Set the SPT trigger edge to match your DUT’s output polarity (rising or falling).
  4. Use short, shielded cabling and tidy routing; add a small series resistor if edges ring.
  5. Allow PIR warm-up time, then verify a clean state transition when motion occurs.

Summary

For IEC 63180, the SPT machine only needs a reliable on/off detection signal from the DUT to evaluate motion-detection performance.
While the platform can also capture amplitude, that feature is optional for this standard. Prepare a clean digital output, keep wiring short and quiet,
and you’ll get repeatable, standards-aligned results with minimal setup.