Nortel Networks 380 Switch User Manual


 
Appendix B Installing SFP and CWDM Gigabit Interface Converters (GBICs) 197
Using the BayStack 380 10/100/1000 Switch
Average receive power minimum
maximum
-23.0 dBm
-3.0 dBm
Power supply maximum 3.15 to 3.45 V, 175 mA
Operating temperature range 0
o
C to 60
o
C
Regulatory Class 1 devices per FDA/CDRH and 1EC8251 Laser Safety
Regulations
Optical budget
20 dB
Note: A minimum attenuation of 5 dB must be present between the
transmitter and receiver. To avoid receiver saturation, you must insert a
minimum attenuation of 5 dB when:
testing the CWDM SFP GBIC in loopback mode
using short runs of fiber with no intermediate CWDM OADM or
CWDM OMUX
To determine the expected signal loss for a CWDM OADM, CWDM
OMUX, or fiber length, see Installation and Networking Guidelines for
Optical Routing, part number 212257-A.
Note: Given a loss budget of 24 dB and assuming fiber loss of .25 dB/
km, up to 96 km reach is supported with no intermediate CWDM OADM
or CWDM OMUX.
Table 54 70 Kilometer CWDM SFP GBIC specifications (continued)
Item Specification