40G QSFP plus DAC Cable

QSFP plus DAC high-speed cables are divided into two types: active and passive. The passive QSFP plus DAC high-speed cable does not have a driver chip, so it can transmit signals without electric energy driving, and the signal will not be amplified or amplified during the transmission process. Balance and other adjustments. Generally speaking, the maximum transmission distance of passive QSFP plus DAC high-speed cable is 7 meters, while the active QSFP plus DAC high-speed cable has a driver chip that can perform signal conditioning, so its transmission distance is slightly longer, about 10 meters or even longer

Today, the QSFP plus DAC high-speed cables on the market include 40G QSFP plus to QSFP plus DAC high-speed cables and 40G QSFP plus to 4*SFP plus high-speed branch cables. These two QSFP plus DAC high-speed cables have different application scenarios. Among them, the QSFP plus to QSFP plus DAC high-speed cable is mainly used for direct connection of short-distance 40G links, such as the direct connection between a 40G switch and a 40G network card; while QSFP plus to 4*SFP plus branch DAC High-speed cables can split 40G signals into four 10G signals, so it is mainly used for 10G-40G network upgrades.

Due to the different structures of QSFP plus DAC and QSFP plus AOC, their working principles are different. Both passive and active QSFP plus DACs can use copper cables for signal transmission. Passive QSFP plus DACs can transmit directly without signal conditioning, and active QSFP plus DACs have a built-in driver chip that will amplify the signal before transmission.