metadata:
  test_id: 20260226_123456
  timestamp: '2026-02-26T12:34:56.789012'
  serial_number: SN001234
  software_version: a3f2b1c8d9e
  comment: Baseline test with new capacitor values
test_results:
  - frequency_hz: 100
    latency_ms: 2.341
    thd_input_percent: 0.015
    thd_output_percent: 0.042
    snr_input_db: 88.5
    snr_output_db: 85.2
  - frequency_hz: 250
    latency_ms: 2.338
    thd_input_percent: 0.012
    thd_output_percent: 0.038
    snr_input_db: 90.3
    snr_output_db: 87.1
  - frequency_hz: 500
    latency_ms: 2.345
    thd_input_percent: 0.011
    thd_output_percent: 0.035
    snr_input_db: 91.7
    snr_output_db: 88.9
  - frequency_hz: 1000
    latency_ms: 2.342
    thd_input_percent: 0.009
    thd_output_percent: 0.029
    snr_input_db: 93.2
    snr_output_db: 90.5
  - frequency_hz: 2000
    latency_ms: 2.339
    thd_input_percent: 0.013
    thd_output_percent: 0.041
    snr_input_db: 92.1
    snr_output_db: 89.3
  - frequency_hz: 4000
    latency_ms: 2.346
    thd_input_percent: 0.018
    thd_output_percent: 0.052
    snr_input_db: 89.8
    snr_output_db: 86.7
  - frequency_hz: 8000
    latency_ms: 2.344
    thd_input_percent: 0.024
    thd_output_percent: 0.067
    snr_input_db: 87.4
    snr_output_db: 84.1