Installation and Reference Guide
100G QSFP28 Modules
Only Tx1-Tx4 and Rx1-Rx4 are applied to the 100G-QSFP-SR-MM850 module, as shown in Figure 6-3.
MPO connectors feature male and female connector design. A male connector has solid pins while a female connector
has a center conductor with holes in it to accept male pins, as shown in Figure 6-4.
Dual-core LC connector for
100G-QSFP-SR-MM850-PAM4/100G-QSFP-SR-MM850-SWDM4/100G-QSFP-LR4-SM1310/100G-QSFP-iLR4-SM1310
/100G-QSFP-ER-SM1310
Figure 6-5 Dual-core LC Connector
DDM
Digital Diagnostic Monitor (DDM) is widely used in optical modules to dynamically measure the temperature, intensity of
transmitted and received light, voltage, and laser bias current of the module. You can run commands to get the monitoring
result on the host system that supports display of DDM information. Different 100G optical modules support different
testing items of DDM. Please refer to the instructions on the specific module model.
Intensity of Transmitted Light
Intensity of transmitted light refers to the optical output power transmitted from the optical module. The unit is dBm.
Intensity of Received Light
Intensity of received light refers to the optical input power received by the optical module. The unit is dBm. Before
connecting optical modules, please pay attention to the specification of received light intensity. If the actual received light
