MRV Communications EM316E3SF manual Switch LPBK/NORM is set to OFF

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Fiber Driver EM316E3 & EM316E3SF

Switch LPBK/NORM is set to OFF

Loop back on

Fiber side

Fig. 3a: External loop back on fiber optic

Switch LPBK/NORM is set to OFF

Fiber side

To far EM316E3

E3 side

Coax to near DTE

Loop back on E3 side

Fig. 3b: External loop back on fiber optic

Loop Back Control: By NMS command or manually by a switch

Loop back can be forced regardless of management by turning switch 1 MAN/NMS to ON and switch 3 NORM/LPBK to ON.

NOTE: It is also possible to configure an external loop, either on E3 side or the fiber side, the switch LPBK/NORMAL should remain in NORM position since the card is in its Normal mode. For external Fiber optic loop back, connect a fiber between RX SC connector and TX SC connector see (fig 3a). For external E3 loop back connect a coax cable between RX BNC connector to TX BNC connector (fig 3b)

P/N: 1226006-001, REV_L

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Contents EM316E3SF Serial number How many employees work at installation site?Registration Card What network medium/media does your organization use ?EM316E3SF Fiber Driver EM316E3 & EM316E3SF Introduction Product DescriptionRequirements for Managed Module FeaturesConnectivity Typical Applications Display Information LED DefinitionFiber Optic Configuration Jumper Settings Factory DefaultTheory of Operation E3 Line Receiver to fiber optic TransmitterSwitch LPBK/NORM is set to OFF Hardware Installation Preparation Follow all Safety RegulationsDetermine the best location for the chassis Unpacking the unitUnit Installation Take out the required amount of blank panelsFiber Driver EM316E3 & EM316E3SF Troubleshooting Technical Specifications Americas Support Customer SupportInternational Support Ordering Information GlossaryFiber Driver Division of MRV Fiber Driver EM316E3 & EM316E3SF