GLC-ZX-SMD Overview Cisco GLC-ZX-SMD is a 1000BASE-ZX SFP for Long-Reach Single-Mode Fiber. The 1000BASE-ZX SFP operates on standard single-mode fiber-optic link spans of up to approximately 70 km in length. The 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. When shorter distances of single-mode fiber (SMF) are used, it might be necessary to insert an inline optical attenuator in the link to avoid overloading the receiver. A 10-dB inline optical attenuator should be inserted between the fiber-optic cable plant and the receiving port on the SFP at each end of the link whenever the fiber-optic cable span loss is less than 8 dB. GLC-ZX-SMD Specification Compatible OEM Part Number GLC-ZX-SM Optcore Part Number OSP1250-5580DCR-CSC Form Factor SFP Data Rate 1.25Gb/s Wavelength 1550 nm Fiber Type SMF Max Distance 70 km Optical Components DFB/PIN Transmitter Power 0 ~ 5 dBm Extinction ratio gt, 9 dB Receiver Sensitivity lt, -26 dBm Receiver Overload gt, 0 dBm Connector LC Duplex Digital Diagnostic Monitoring Yes Environment Operating: 0C to 70C Storage: -40C to 85C Weight 0.025 kg Application 1x Fiber Channel, Switch to Switch Interface Gigabit Ethernet, Switched Backplane Applications Router/Server Interface, Other Optical Links Compliance IEC/EN 61000-4-2,IEC-60825 FDA 21CFR 1040.10 and 1040.11 RoHS
