Nvidia BlueField-3 - 11.2 Channel Insertion Loss

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Category Qty Item
Harnesses 1 Cabline CA-II Plus harness (white) - Length according to kit
OPN (15, 25 or 35cm)
1 Cabline CA-II Plus harness (black) - Length according to kit
OPN (15, 25 or 35cm)
Accessories 2 Retention Clip for Cabeline harness (shipped assembled on
the harnesses - optional)
1 PCIe Auxiliary card short bracket
1 PCIe Auxiliary card tall bracket (shipped assembled on the
Auxiliary card)
11.2 Channel Insertion Loss
Channel insertion loss is the signal power loss resulting from a device's insertionin atransmission
lineoroptical fiberand is usually expressed indecibels(dB).
The following table describes the NVIDIA® BlueField®-3channel insertion loss budget for PCIe Gen
5.0 architecture (32 GT/s).
The total PCIe channel insertion loss approved byPCI-SIG Gen5.0 specis36dB @16GHz.
The totalBlueField-3 DPU boardinsertion loss of thePCIe lanes(PCORE1) routed to theCabline CA-
II Plusis 6dB(@16GHz).
ThePassiveSocket Direct PCIe Auxiliary Card Lossis1.5dB(@16Ghz).
TheCabline CA-II Plus harnessloss at 16GHz:
Harness Length Channel Loss at Gen 5.0
15cm 3.8dB
35cm 7.6dB
55cm 11.4dB
The above is measured data; it is recommended to add0.5dB marginsfor your system (some loss
variations are possible).
TheCabline CA-II Plus harnessesloss =0.24dB/cmfor Gen 5.0.
The above loss includes theCabline CA-II Plus harnessesandconnectorson both sides.
The PCI-SIG Gen5 SPEC also defines the total loss for AIC (bump to GF) to be 9.5dB @16Ghz.
Please note that the BlueField-3 AIC, together with a 15cmCabline CA-II Plus harnesses andthe
Passive PCIe Auxiliary Card loss is 10.3dB, which is approved by NVIDIA.