Cold start-up test

Identifiers

"TestType":"COLD_STARTUP"

Short description

Need to include a new test during QC that allows to verify which modules have issues during cold startup. The proposal is to run this test during the temperature ramp down at the beginning of the cold stage. This is the proposed algorithm for now:

• Operator set target T of the testing box to -35, -45C with module unpowered
• the COLD_STARTUP measurement is run. It continuously measure the temperature from the external NTC, and once a module reached a certain temperature (within +/-1 C), the module is power-on, the Vin from the PS is measured, the module is powered off.

For now, we are suggesting 4 temperature values at which to power-on the module and measure Vin: 0, -10, -20, -35

The measurement is currently run only at -45C. The measurment config can be editied for other temperature values.

Raw data format

{ "serialNumber": "20UPGFC0085314", "testType": "COLD_STARTUP", "runNumber": "67d37c47eb811b4bfc388319", "subtestType": "", "results": { "property": { "YARR_VERSION": "v1.5.3", "COLD_STARTUP_MEASUREMENT_VERSION": "2.4.0" }, "comment": "", "Measurements": { "Temperature": { "X": false, "Unit": "C", "Values": \[ 0, -10, -20, -35 \] }, "Vin": { "X": false, "Unit": "V", "Values": \[ 1.46, 1.46, 1.46, 1.46\] }, } "Metadata" {...} }

Where the Temperature is the value measured from the module NTC before powering-on the module.

Changes in the PDB:

• MODULE E-SUMMARY pass/fail and link to all 4 chips test runs (they are all the same, but for consistency with other test runs)
• FE_CHIP new test COLD_STARTUP with usual properties (measurement version, analysis version, yarr version, date measurement performed, measurement duration) and parameter V_DIFF (float)
• possible to save in both FINAL_COLD and THERMAL_CYCLE (optional)