Category 8 Short Channel Performance Demonstration Using Multiple Sourced Prototypes

of Cabling and ICM

B. Moffitt CommScope Systems Engineering

7/4/2015 1 CommScope - 802.3 bq by Submission

Supporters: Victor Renteria Steve Sedio

7/4/2015 2 CommScope - 802.3 bq by Submission

CommScope Prototype Category 8 Short Cabling Link measured two ways

1m cord

3m Cable

1m cord

Mod Jack

Mod Jack

Bel ICM

FoxconnICM

Through ICM from two different manufacturers as PHY chip to PHY chip:

With end plugs removed as measured for TIA compliance:

CommScope Test Head

CommScope Channel

7/4/2015 3 CommScope - 802.3 bq by Submission

Side by side Insertion Loss and Return Loss

Small amount of additional RL

Expected BALUN Loss

Some Additional ILD

Short Channel – Significant RL

Short Channel – Low IL and strong reflections

7/4/2015 4 CommScope - 802.3 bq by Submission

Side by side NEXT and FEXT

Short Channel – Significant Connector NEXT

Manageable Additional FEXT

Manageable Additional NEXT

Conclusions:

• Excellent results in support of ongoing work on 802.3bq and PN-568-C.2-1 demonstrated with critical short channel

• 4 primary cabling performance parameters significantly maintained by the ICM

• Demonstrated compatibility with independent prototype designs from 3 different suppliers

7/4/2015 5 CommScope - 802.3 bq by Submission