SC loopback Module

SC: TIA/EIA, FOCIS3, GR-326.NTT-SC IEC61754-4 and JIS C5973.

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Description

Fiber Optic Loopback modules are also called optical loopback adapters. They are designed for testing, engineering and the burnin stage of boards or other equipment. Optical loopback adapters provide system test engineers a simple but effective way of testing the transmission capability and the receiver sensitivity of network equipment.

Fiber Optic Loopback is providing a media of return patch for a fiber optic signal. Typically it is used for fiber optic testing applications or network restorations.

When used in testing applications, loopback signals are used for diagnosing problems. The best practice is to send a loopback test to network equipment, one at a time for isolating the problem.

Fiber optic loopbacks are designed in a compact footprint. They are compliant with fast Ethernet, fiber channel, ATM and Gigabit Ethernet.

Mini SC loopback is suit for 0.9mm cable and 0.25mm fiber.

Specification

Loopback Module Specification:

Items BIF Single mode Fiber-G657B3 BIF Multimode fiber- 50/125 or 62.5/125
Insertion loss(typical) 0.2dB 0.2dB
Insertion loss(Max) 0.3dB 0.7dB
Return loss UPC>50dB; APC>60dB >35dB
Operating& Storage temperature range -40°C to +75°C
Repeat Ability < 0.5dB (500 Cycle Passed)

 

Loopback Cable Specification:

Items BIF Single mode fiber-

9/125 G657 A1

BIF Multimode fiber-

50/125 or 62.5/125

Insertion loss(typical) 0.2dB 0.2dB
Insertion loss(Max) 0.3dB 0.3dB
Return loss UPC>50dB; APC>60dB >35dB
Operating& Storage temperature range -40°C to +75°C
Repeat Ability < 0.5dB (500 Cycle Passed)

 

Application in Data Center

Fiber optic loopback test is the most convenient way for transceiver maintenance. Fiber optic loopback modules incorporate two fiber optic connectors and they are plugged into the output and input port of the equipment respectively so that a signal can be sent from a communication device and looped back to the device as a way to troubleshoot a defective node in the network.

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