> Public anonymized edition, 2026-10-20. Reference A is a commercial 1.0 m comparison cable; manufacturer/model and cable-identifying E-Marker fields are withheld. Power measurements, test settings, outcomes and acquisition warnings are retained. Identification capture files listed in ANONYMIZATION.md are excluded from public distribution. References to originals describe the retained internal acquisition records. Public hashes describe the anonymized files, not the private originals.

USB-C cable validation record

<b>DAISO YMU-25-P10 / G273-011 / 1.0 m / c_sample1</b>

19 October 2026 | 100 Vac / 50 Hz | DAISO-CABLE-20261019-01

Finding: all 29 cases passed in one uninterrupted run

All 29 cases passed the v5.8.13 full cable procedure. The original outcome is SCREENING_COMPLETE. Coverage comprises Fixed 5 / 9 / 15 / 20 / 28 / 36 / 48 V current round trips, seven 120 s loaded holds, before/after light-load baselines and a final 48 V to 5 V return. There was no CY4500 capture interruption.

The 120 s hold at the 48 V / 5 A setpoint produced median ASD input readings of <b>47.051 V / 5.000 A / 235.255 W</b>. Nominal 240 W is the setpoint product, not measured power of 240 W at the ASD input.

Voltage droop exceeded the 1 m Reference A reference by approximately 117 - 120 mV at 3 A and 207 - 210 mV at 5 A. This is a power-path comparison, distinct from isolated cable resistance or a standards-compliance verdict.

Specimen and test conditions

| Item | Record |

| --- | --- |

| DUT | DAISO; entered model YMU-25-P10; package code G273-011; JAN 4550480762425 |

| Specimen name | DAISO_YMU-25-P10_G273-011_1m_c_sample1 |

| Declared specifications | 1.0 m; detachable; 5-48 V / up to 5 A / 240 W; E-Marker; USB 3.2 Gen2 10 Gbps [P01] |

| SRC | Framework FRANDVCH00_s_sample1; C1; entered maximum 240 W |

| Power path | SRC > DUT Cable > CY4500-EPR > ASD-PD31 |

| AC / orientation | 100 Vac / 50 Hz; operator-entered metadata; as-connected; ASD cc2 |

| Procedure | full; 0.1 A start, 0.2 A steps; 3 readings/point; 120 s holds; hold-settle 1 s; cooldown 5 s |

| Capture / control | Mandatory CY4500 live guard; ASD v5.8.13; COM3 USB Type-B |

YMU-25-P10 is the entered model. The manufacturer meaning of the two package codes is unconfirmed; both are retained. Records identify one specimen; both CH32 capture sets use the same c_sample1 name.


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Loaded holds and reference comparison

Each of the seven 120 s holds yielded 120 samples at 1 s intervals, spanning approximately 119 s in recorded sample times. The 1 s wait after LOAD_ON is outside the hold duration. Values are steady ASD input readings.

| Target V/A | V min | V median | V max | I median | P median W |

| --- | --- | --- | --- | --- | --- |

| 5/3 | 4.851 | 4.855 | 4.859 | 3.000 | 14.565 |

| 9/3 | 8.553 | 8.558 | 8.562 | 3.000 | 25.674 |

| 15/3 | 14.550 | 14.554 | 14.559 | 3.000 | 43.662 |

| 20/5 | 19.159 | 19.169 | 19.183 | 5.000 | 95.845 |

| 28/5 | 27.050 | 27.061 | 27.076 | 5.000 | 135.305 |

| 36/5 | 35.039 | 35.047 | 35.060 | 5.000 | 175.235 |

| 48/5 | 47.035 | 47.051 | 47.066 | 5.000 | 235.255 |

Comparison with Reference A / 1 m

| Target V/A | DUT droop V | Ref droop V | Delta mV | Apparent path delta mOhm |

| --- | --- | --- | --- | --- |

| 5/3 | 0.2185 | 0.0985 | +120.0 | +41.38 |

| 9/3 | 0.5185 | 0.4005 | +118.0 | +40.69 |

| 15/3 | 0.5155 | 0.3990 | +116.5 | +40.17 |

| 20/5 | 0.8895 | 0.6800 | +209.5 | +42.76 |

| 28/5 | 0.8830 | 0.6765 | +206.5 | +42.14 |

| 36/5 | 0.8850 | 0.6775 | +207.5 | +42.35 |

| 48/5 | 0.8855 | 0.6790 | +206.5 | +42.14 |

Reference RA01 is the 17 October 2026 Reference A c_sample1 full run (29/29 PASS). Source/port, 100 Vac / 50 Hz metadata, cc2, loads and procedure settings match. Both cables are nominally 1 m; measurements were taken at different times.

Droop = mean of before/after 0.1 A voltage medians minus the loaded-hold median. Apparent path resistance = droop / measured high-low current difference. Both DUT and reference metrics were independently reproduced from their original CSVs. Apparent path resistance differences are approximately 40 - 43 mOhm.

Source regulation, contacts, CY4500, the ASD input path and time-dependent differences contribute; these are not isolated cable resistances. The reference used RS232 ASD control, this run USB Type-B. The reference is a same-bench comparator, not a calibration standard or independently verified USB-IF certification.


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Current round trips and 5 V return

Round trips reached 3 A at 5 / 9 / 15 V and 5 A at 20 / 28 / 36 / 48 V. Traces show medians of three readings per point; solid/dashed lines distinguish the two legs. All acquired points, including the return legs, met the procedure tracking checks.

T29: light-load return from Fixed 48 V to 5 V

| Setpoint | Read voltages V | Read currents A | Result |

| --- | --- | --- | --- |

| 48 V / 0.1 A | 47.936, 47.937, 47.934 | 0.100, 0.100, 0.100 | PASS |

| 5 V / 0.1 A | 5.077, 5.073, 5.074 | 0.100, 0.100, 0.100 | PASS |

The configured endpoint delay is 2 s with three readings at each endpoint. This verifies settled endpoints, not transition-time compliance. Logs also confirm final LOAD_OFF acknowledgement and zero current.

Procedure criteria

Tracking checks use +/-1 V and +/-max(0.050 A, 2% of setpoint). Safety ceilings are 252 W, 5.25 A and 80 degrees C ASD internal temperature. These are procedure checks, not USB compliance limits. The minimum 48 V hold reading, 47.035 V, is 0.965 V below target and within the procedure +/-1 V window.


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Capture and data integrity

| Audit item | Result |

| --- | --- |

| Original run | initial_cable_suite_20261019_191249_471751 |

| Cases / cleanup | SCREENING_COMPLETE; 29/29 PASS; 29 exit code 0; 29 LOAD_OFF verified |

| Case / preflight rows | 1,786 / 58; steady=1,779, precheck=7 |

| Raw ADC responses | All 1,844 rows independently checked for CRC, V/I decoding and tracking. |

| Power calculation | P versus V x I differs by no more than 0.00101 W. |

| Control logs | 3,027 CRC-valid receive buffers; no matched warnings/errors. |

| Live capture | 59 guard PASS; 59 exported PD CSVs |

| Versions / PDOs | 59 instrument snapshots match; all 29 preflight PDO lists match discovery. |

| Hold continuity | 7 x 120 samples; max adjacent gap 1.009 s |

CY4500 PD traffic inventory

| PD CSV rows | REQUEST | EPR_REQUEST | PS_RDY | SOFT_RESET |

| --- | --- | --- | --- | --- |

| 14,831 | 282 | 132 | 414 | 131 |

HARD_RESET, REJECT and WAIT counts are all zero. No SOP packets were marked invalid by CY4500. The 59 files include discovery, each case 5 V preflight and main measurements. SOFT_RESET totals include procedure-driven reacquisition and must not all be treated as spontaneous faults.

Every REQUEST/EPR_REQUEST has a later PS_RDY in the same capture. This is not certification of one-to-one transaction matching, transition timing or complete protocol compliance. CH32 acquisition history is reported separately and is not mixed into these 59-file totals.

ASD and CY4500 used separate externally powered WCH CH319M-MagIso-R0 USB paths to the PC. No USB capture stall was observed during this cable run.


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Coverage map for all 29 cases

| Case | Phase | Target V/A | Steady N | Result |

| --- | --- | --- | --- | --- |

| T01 | low_before | 5/0.1 | 3 | PASS |

| T02 | current | 5/3 | 93 | PASS |

| T03 | loaded_hold | 5/3 | 120 | PASS |

| T04 | low_after | 5/0.1 | 3 | PASS |

| T05 | low_before | 9/0.1 | 3 | PASS |

| T06 | current | 9/3 | 93 | PASS |

| T07 | loaded_hold | 9/3 | 120 | PASS |

| T08 | low_after | 9/0.1 | 3 | PASS |

| T09 | low_before | 15/0.1 | 3 | PASS |

| T10 | current | 15/3 | 93 | PASS |

| T11 | loaded_hold | 15/3 | 120 | PASS |

| T12 | low_after | 15/0.1 | 3 | PASS |

| T13 | low_before | 20/0.1 | 3 | PASS |

| T14 | current | 20/5 | 153 | PASS |

| T15 | loaded_hold | 20/5 | 120 | PASS |

| T16 | low_after | 20/0.1 | 3 | PASS |

| T17 | low_before | 28/0.1 | 3 | PASS |

| T18 | current | 28/5 | 153 | PASS |

| T19 | loaded_hold | 28/5 | 120 | PASS |

| T20 | low_after | 28/0.1 | 3 | PASS |

| T21 | low_before | 36/0.1 | 3 | PASS |

| T22 | current | 36/5 | 153 | PASS |

| T23 | loaded_hold | 36/5 | 120 | PASS |

| T24 | low_after | 36/0.1 | 3 | PASS |

| T25 | low_before | 48/0.1 | 3 | PASS |

| T26 | current | 48/5 | 153 | PASS |

| T27 | loaded_hold | 48/5 | 120 | PASS |

| T28 | low_after | 48/0.1 | 3 | PASS |

| T29 | transition | 48/0.1 | 6 | PASS |

All cases come from the same R01 full run. Before/after baselines, loaded holds and current round trips are not combined across different runs. T29 lists its initial 48 V setpoint; its return endpoint is 5 V.


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E-Marker records and assessment scope

| Item | Observation / record |

| --- | --- |

| Cable | Passive; current 5 A; maximum 48 V; Cable VDO 0x000A2642 |

| VID / PID / XID | 0x0000 / 0x0000 / 0x00000000 |

| ID Header / Product VDO | 0x18000000 / 0x00000000 |

| Speed field | usb_speed=2; CH32 decoder label: USB4 Gen2; cable VDO version=0 |

| ID | Capture / session | CC | Overall | EPR objects |

| --- | --- | --- | --- | --- |

| C01 | CH01 / 1 | 2 | PARTIAL | 0 |

| C02 | CH01 / 2 | 1 | PASS | 11 |

| C03 | CH02 / 1 | 1 | PASS | 11 |

| C04 | CH02 / 2 | 2 | PASS | 11 |

Cable identity fields agree across all four sessions. C01 remains PARTIAL because the EPR PDO list was not acquired. C02-C04 obtained all 11 EPR objects and passed. The load test is linked to C04 result.json. JSON and raw logs survived the final report-update interruption.

Zero VID/PID/XID values limit identification and traceability; alone they do not establish defect, counterfeit status or certification. The official 10 Gbps claim and CH32 speed label are retained with separate attribution. No USB data-transfer test was performed; neither 10 Gbps nor USB4 performance was demonstrated.

Assessment limits

This is Fixed-power screening of one specimen at 100 Vac in the recorded orientation. PPS/AVS loaded sweeps, all orientations, temperature rise, insulation withstand, mechanical durability, long-duration operation and USB-IF certification were not assessed. Temperature columns are fan-dependent ASD internal readings, not source/cable/plug temperatures. Independent ripple bandwidth/calibration checks, traceable calibration evidence and independent AC meter logs are not included.

Package and sources

reports contains bilingual PDFs and Markdown. analysis contains cases, normalized ADC/preflight rows, holds, sweeps, path/reference comparisons and PD/CRC audits. evidence retains anonymized R01, both CH32 captures/four sessions and the Reference A reference. source_csv/source_csv_line trace original CSV rows. Original mode has no literal steady value; measured rows without -precheck/-ramp suffixes are steady.

P01: <link href="https://jp.daisonet.com/products/4550480762425" color="#147C86">DAISO official product page / JAN 4550480762425</link> (2026-10-19). Source of declared specifications. Package codes are operator-reported. File hashes and mappings: manifest_sha256.csv / source_manifest.csv / evidence_index.csv.