Shenzhen, China, August 30, 2021 − GIGALIGHT’s today launched an 8-channel 400G QSFP56-DD passive direct-attached cable (PCC) assembly that supports 3m transmission, marking its successful return to the technology track of DAC products.
The newly developed 400G QSFP56-DD PCC assembly can reach a maximum transmission distance of 3m, the insertion loss is better than 17.16dB@13.28GHz, the Pre-FEC bit error ration is better than average 1E-8, and the Post -FEC bit error ration is better than 1E-14 level, showing superior consistency of each channel.
(Partial testing diagram of 400G DACs)
Table ：400G QSFP56-DD 3m DAC Case A
Table 2：400G QSFP56-DD 3m DAC Case B
GIGALIGHT has started the R&D and production of passive DAC assemblies since 2011 and gained a large amount of customers of Passive DAC products worldwide. Through 10 years of technological innovation and practice, the company has completely solved the compliance problem of COM computing software & hardware and protocols, and has endowed high-density DACs with a set of efficient and reliable manufacturability procedures.
Over the years of R & D, GIGALIGHT has a complete family of DAC and its branch products:
|Product name||Protocol||Maximum insertion loss||Transmission distance|
|10G SFP+ PCC||IEEE 802.3ae||17.04dB@5.16GHz||7m|
|25G SFP28 PCC||IEEE 802.3by||22.48dB@12.89GHz||5m|
|40G QSFP PCC||IEEE 802.3ba||17.04dB@5.16GHz||5m|
|100G QSFP28 PCC||IEEE 802.3bj||22.48dB@12.89GHz||5m|
|200G QSFP56 PCC||IEEE 802.3cd||17.16dB@13.26GHz||3m|
|400G QSFP-DD PCC||IEEE 802.3cd||17.16dB@13.26GHz||3m|
Table 3: GIGALIGHT DAC and branch product family