Generic QSFP-40G-LB Compatible 40Gbps QSFP 0W 0dB Passive Loopback Testing Module Dawnray’s QSFP-40G-LB is a 40Gbps Quad Small Form-factor Pluggable QSFP loopback module for cost effective 40GBASE Ethernet network port testing. QSFP LB routes 41.2Gb/s data stream from transmitting side back to receiving side of the same host port by looping back the electrical signal. This loopback is fully compliant with QSFP Multi-Source Agreement (MSA), IEEE 802.3ba 40GBASE-CR4 and XLPPI standard. The electrical interface is MSA compliant 38-pin edge type connector and the internal loopback by AC coupling internally. The QSFP loopback module implements 4 independent 10.3125Gbps transmit and receive signal channels in each differential trace for an aggregate 41.25Gbps data rate. MSA memory map is accessible via 2-wire (TWI/I2C) interface. Our loopback is designed for R&D evaluation, production testing of QSFP equipped network routers/switches, blade servers and adapter cards. Protocol-transparent design ensures widely compatibility with various signal standards, including 40 Gigabit Ethernet (40GbE), 4x EDR InfiniBand and proprietary interconnection. Feature Hot pluggable QSFP loopback testing module Aggregate data rate up to 41.25Gbps 4x 10.3125Gbps NRZ XLPPI electrical interface MSA memory accessible via 2-wire interface Single 3.3V power supply voltage Extremely low power consumption near 0W Ambient temperature range -20 to 85°C for extended application Compliant with SFF-8436, SFF-8635, SFF-8661, SFF-8679, SFF-8636 Compliant with IEEE 802.3ba 40GBASE-CR4 Compliant with RoHS, REACH, CE, FCC standards Application 40G Ethernet Board Level System Testing 56G 4X FDR InfiniBand Specification Part Number QSFP-40G-LB Form Factor QSFP Max Data Rate 41.25Gbps DDM/DOM Not support Signal Conditioner None Attenuation 0dB Extended Temperature Range -20 to 85°C (-4 to 185°F) Power Consumption 0W
