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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 23 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.
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Award One Technology
Pty Ltd
