Product Summary
A Loopback Module is a module-type device that internally loops back electrical signals from the sender to the receiver, allowing:
・Pseudo power consumption and temperature tests can be performed by adjusting the internal load and temperature.
・Insertion loss and contents of EEPROM can be customized
Product lineup for each module standard
product name |
Module standard |
data rate |
ML4013 |
CFP |
10x10 G |
ML4029/4043 |
CFP2 |
10x10 G |
ML4030 |
CFP2 |
4/8x32 G |
ML4050 |
CFP4 |
4x28 G |
ML4059 |
CFP8 |
16x25/8x50 G |
ML4026 |
SFP/SFP28/SFP56 |
1x28/56 G |
ML4019-LB |
DSFP |
2x50 G |
ML4022-LB |
SFP-DD |
2x50 G |
ML4002 |
QSFP+/28/56/112 |
4x10/28/56/112 G |
ML4062-SLB ML4062-TL2a |
QSFP-DD |
8x56/112 G |
ML4064-LB |
OSFP |
8x56/112 G |
Learn more about QSFP-DD loopback modules here
A technical article explains how to solve network problems with measuring instruments
Using a link failure in an actual network device as a theme, we introduce an example of troubleshooting in which a measuring instrument found that the cause was in both the switch and the optical transceiver module.
If you are interested in how the loopback module should be used in practice, please take a look.
This article is also well read
What is an "optical transceiver module"?
"Types of Optical Transceiver Modules" "Interfaces for Accessing Optical Transceiver Modules" "Types of Optical Fibers" "Relationship between Standards and Distances"
It is divided into 4 points and explained.