CISCO GLC-LH-SMD SFP (mini-GBIC) Transceiver Module True-Tech

CISCO GLC-LH-SMD SFP (mini-GBIC) Transceiver Module

1000BASE-T SFP for copper networks
The 1000BASE-T SFP operates on standard Category 5 unshielded twisted-pair copper cabling of link lengths up to 100 m (328 ft).

Cisco 1000BASE-T SFP modules support 10/100/1000 auto negotiation and Auto MDI/MDIX.

1000BASE-SX SFP for multimode fiber only
The 1000BASE-SX SFP,

compatible with the IEEE 802.3z 1000BASE-SX standard, operates on legacy 50 μm multimode fiber links up to 550 m and on 62.5 μm Fiber Distributed Data Interface (FDDI)-grade multimode fibers up to 220 m.

It can support up to 1km over laser-optimized 50 μm multimode fiber cable.

1000BASE-EX SFP for long-reach single-mode fibers
The 1000BASE-EX SFP operates on standard single-mode fiber-optic link spans of up to 40 km in length. A 5-dB inline optical attenuator should be inserted between the fiber-optic cable and the receiving port on the SFP at each end of the link for back-to-back connectivity.

1000BASE-ZX SFP for long-reach single-mode fibers
The 1000BASE-ZX SFP operates on standard single-mode fiber-optic link spans of up to approximately 70 km in length.

The CISCO GLC-LH-SMD SFP provides an optical link budget of 21 dB,

but the precise link span length depends on multiple factors such as fiber quality,

number of splices, and connectors.

100/1000BASE-LX SFP for long-reach single-mode fibers
The dual-rate 100M/1G 10Km SFP is interoperable with the IEEE 100BASE-LX and 1000BASE-LX/LH standards.

The GLC-GE-DR-LX SFP also supports Digital Optical Monitoring (DOM)

functions according to the industry-standard SFF-8472 Multisource Agreement (MSA). This feature gives the end user the ability to monitor real-time parameters of the SFP,

such as optical output power, optical input power,

temperature, laser bias current,

and transceiver supply voltage.

Cisco SFP Operation at 100M
The GLC-GE-DR-LX SFP can interoperate with other 100M SFPs/

interfaces as long as those are based on 100BASE-LX10 standard.

A 5dB attenuator is needed on the path of dual-rate SFP Tx and 100BASE-LX10 interface Rx.

No attenuator is needed on the other fiber strand.

SFP Operation at 1G
The GLC-GE-DR-LX SFP can interoperate with other 1G SFPs/

interfaces as long as those are based on 1000BASE-LX/LH standard.

No attenuator is needed in any fiber strand.