Instruction manual

Appendix B Physical Specifications of Network Interfaces
96
Item
Physical specifications
Optical transmission loss (max.) 7.5 dB 8.0 dB
Transmission distance 2 to 550 m 2 m to 5 km
#1: When using 1000BASE-LX with multi-mode fiber optic cable, depending on the
kind of fiber optic cable, the BER (bit error rate) might increase. In such a case, use
a mode-conditioning patch cord to resolve the communication problem.
Table B-8 Physical specifications of 1000BASE-LH
Item
Physical specifications
Cable Type Single mode Single-terminal mode
(DSF)
Core/cladding diameter
10 / 125 µm 8 / 125 µm
Laser center wavelength
1.540 to 1.570 µm
Optical transmission power (mean) 0 to +5.0 dBm
Optical reception power (mean) -22.0 to 0 dBm
Optical transmission loss (max.) 22dB
#1
Transmission distance 2 m to 70 km
#1: When optical transmission loss is 5.0 dB or less, use an optical attenuator to
adjust the loss.
Table B-9 Physical specifications of 1000BASE-BX
Item
Physical specifications
Interface 1000BASE-BX10-
U
#1
1000BASE-BX10-
D
#1
1000BASE-BX40-
U
#2
1000BASE-BX40-
D
#2
Cable Type Single mode
Core/cladding diameter
10 / 125 µm
Laser center wavelength
1.260 to 1.360 µm 1.480 to 1.500 µm 1.260 to 1.360 µm 1.480 to 1.500 µm
Receiving wavelength
1.480 to 1.500 µm 1.260 to 1.360 µm 1.480 to 1.500 µm 1.260 to 1.360 µm
Optical transmission
power (mean)
-9.0 to -3.0 dBm -3.0 to 3.0 dBm
Optical reception power
(mean)
-19.5 to -3.0 dBm -23.0 to -3.0 dBm