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100G QSFP28
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QSFP28 Loopback

100G QSFP28
QSFP28 Loopback
QSFP28 Electrical Passive Loopback has Excellent signal integrity, It is used for Economical and flexible 100Gbps QSFP28 port testingBoard level system testing and Power on validation.
The loopback module is packaged in a standard MSA housing compatible with all QSFP+/QSFP28 ports. Transmit data from the host is electrically routed, (internal to the loopback module), to the receive data outputs and back to the host. It provides an economical way to exercise QSFP/QSFP+ ports during R&D validation, production testing, and field testing.

FeaturesCustomizable power consumption
Custom memory maps available
Supports 100Gbps total data rate
Host-pluggable MSA footprint
Full SFF-8665 MSA compliant
Temperature range from 0℃ to 80℃
Compliant with SONET, SDH, GBE, Fibre Channel
MSA Compliant EEPROM
ApplicationsQSFP port/system testing
Ethernet IEEE 802.3
SDR, DDR and QDRInfiniband Transmission
SONET, SDH, GBE, Fibre Channel

Technical Parameters

DescriptionThickness of Gold-fingerPlug in and outAttenuation OptionOperating Temperature(TA)+3.3V Supply Voltage(VCC)Data RateInput/ Output Load Resistance(RL)Power Option
Parameter15 μ500 Times0~5.0dB0~70°C3.15~3.45 V100 Gbps100±10 Ω0~3.5W

Order Information

Part NumberDescription
CAB-ZQP-LB0QSFP28 electrical passive loopback 0dB
CAB-ZQP-LB3.5 QSFP28 electrical passive loopback 3.5dB
CAB-ZQP-LB5QSFP28 electrical passive loopback 5dB
Part NumberDescription
CAB-ZQP-LB0PL1QSFP28 electrical passive loopback 0dB, 1W
CAB-ZQP-LB0PL2.5QSFP28 electrical passive loopback 0dB, 2.5W
CAB-ZQP-LB0PL3.5QSFP28 electrical passive loopback 0dB, 3.5W
Product Type :

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