Nortel Networks CWDM SFP - Manual (Page 16)

14
Distance 70 km
Receiver Characteristics
Wavelength 1200 to 1550 nm
Minimum receiver sensitivity -22 dBm
Maximum input power -3 dBm
Note: When shorter lengths of single-mode fiber cable
are used, there is a risk of overloading the receiver. It
may be necessary to insert an in-line optical attenuator
in the link to prevent overloading, as follows:
• Insert a 10 dB in-line optical attenuator between the
fiber optic cable plant and the receiving port on the
1000BASE-ZX GBIC, at each end of the link, if the
fiber optic cable span is less than 25 km.
• Insert a 5 dB in line optical attenuator between the
fiber optic cable plant and the receiving port on the
1000BASE-ZX GBIC, at each end of the link, if the
fiber optic cable span is less than 50 km.
Table 6 1000BASE-ZX GBIC specifications (continued)
Type Specifications
CWGBIC.fm Page 14 Wednesday, December 12, 2001 11:26 AM