Hewlett Packard Enterprise OfficeConnect 1850 2XGT, Installation And Getting Started Manual, Page: 41 / 56

Specifications
Mode Conditioning Patch Cord
A-5
Technology Distance Specifications
Mode Conditioning Patch Cord
The following information applies to installations in which multimode fiber-optic cables are connected to a
Gigabit-LX port. Multimode cable has a design characteristic called “Differential Mode Delay”, which requires
the transmission signals be “conditioned” to compensate for the cable design and thus prevent resulting
transmission errors.
Under certain circumstances, depending on the cable used and the lengths of the cable runs, an external
Mode Conditioning Patch Cord may need to be installed between the Gigabit-LX transmitting device and the
multimode network cable to provide the transmission conditioning. If you experience a high number of
transmission errors on those ports, usually CRC or FCS errors, you may need to install one of these patch
cords between the fiber-optic port in your switch and your multimode fiber-optic network cabling, at both ends
of the network link.
The patch cord consists of a short length of single mode fiber cable coupled to graded-index multimode fiber
cable on the transmit side, and only multimode cable on the receive side. The section of single mode fiber is
connected in such a way that it minimizes the effects of the differential mode delay in the multimode cable.
Technology Supported cable type Multimode fiber modal bandwidth Supported distances
1000-T twisted-pair copper N/A up to 100 meters
1000-SX multimode fiber 160 MHz*km
200 MHz*km
400 MHz*km
500 MHz*km 2 - 220 meters
2 - 275 meters
2 - 500 meters
2 - 550 meters
1000-LX multimode fiber
single mode fiber
400 MHz*km
500 MHz*km
N/A 2 - 550 meters
2 - 550 meters
2 - 10,000 meters
10G-T twisted-pair copper N/A up to 100 meters
10G-SR multimode fiber 160 MHz*km
200 MHz*km
400 MHz*km
500 MHz*km
2000 MHz*km 2 - 26 meters
2 - 33 meters
2 - 66 meters
2 - 82 meters
2 - 300 meters
10G-LR single mode fiber N/A 2 - 10 km
10G-LRM multimode fiber 160/500 MHz*km
200/500 MHz*km
400/500 MHz*km
500/500 MHz*km
1500/500 MHz*km 0.5 - 220 meters
0.5 - 220 meters
0.5 - 100 meters
0.5 - 220 meters
0.5 - 220 meters