What tests should a cable factory run before shipment?

Continuity and hi-pot for every piece; impedance, attenuation and E-Marker on a lot basis.

Answer: split the tests by whether they are 100% or sample-based — mixing the two is how "all tested" becomes meaningless.

Test	Coverage	What it catches
Continuity / wiring	100%	Wrong or open conductor
Hi-pot (dielectric)	100%	Insulation defect
Impedance / attenuation	Sample per lot	High-frequency performance
E-Marker read-out	Sample per lot	Declared current/speed wrong
Visual / dimensional	100% or AQL	Jacket, print, length

Ask for the record, and for which of these are 100% versus sample.

Frequently asked questions

What tests should a cable factory run before shipment?

Continuity and hi-pot on 100%, impedance/attenuation and E-Marker on a lot-sample basis — ask which is which.

About the author

Tonetron Engineering Team· Dongguan Taitron Electronic Limited

Tonetron is the export brand of Dongguan Taitron Electronic Limited, a cable and connectivity manufacturer in Dongguan, Guangdong, China. Our engineering and QA teams write these guides from our own production and test experience — including HDMI Forum ATC confirmations (certificates 5QSIMQP4DLG, 2JCHSF3SL1X, MG3CQ3Z4BAG) and USB-IF USB4 certification testing passed under TID 6801. Our USB-IF membership has since lapsed, so that entry is no longer in the public USB-IF product search; the certificate itself is published on our credentials page. The credential you can verify yourself right now: we have been a licensed HDMI™ Adopter since June 2005 — searchable under “Dongguan Taitron” in the official HDMI™ Adopter directory.

What tests should a cable factory run before shipment?

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What tests should a cable factory run before shipment?

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