Mode Conditioning Patch Cord - HP Aruba 3810M Series Installation And Getting Started Manual

Table 33 Technology Distance Specifications (continued)
Technology
10-Gig SR
10-Gig LRM
10-Gig LR
10-Gig ER
40-Gig SR4
40-Gig ESR4
40-Gig LR4
1
Cat 5e cabling requires testing to 200 MHz operation and additionally for ANEXT and AELFEXT. The maximum
supported distances may be reduced depending on alien crosstalk levels. The support for untested cable installations
is best-effort.
2
Cat 6 cabling requires testing for ANEXT and AELFEXT. The maximum supported distances may be reduced
depending on alien crosstalk levels.
3
Cat 6 cabling requires TIA TSB-155A testing for 500 MHz operation and ANEXT.
4
For distances less than 20km, a 10dB attenuator must be used. For distances between 20km and 40km, a 5dB
attenuator must be used. Attenuators can be purchased from most cable vendors.

Mode Conditioning Patch Cord

The following information applies to installations in which multimode fiber-optic cables are
connected to a Gigabit-LX port or a 10-Gigabit LRM 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 Gigait-LX or
10-Gigabit LRM 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.
88 Cabling and Technology Information
Supported cable type Multimode fibermodal bandwidth
multimode fiber 160 MHz*km
200 MHz*km
400 MHz*km
500 MHz*km
2000 MHz*km
multimode fiber 400 MHz*km
500 MHz*km
single mode fiber N/A
single mode fiber N/A
single mode fiber 2000 MHz*km
4700 MHz*km
multimode fiber 2000 MHz*km
4700 MHz*km
single mode fiber N/A
Supported distances
2 - 26 meters
2 - 33 meters
2 - 66 meters
2 - 82 meters
2 - 300 meters
0.5 - 100 meters
0.5 - 220 meters
2 - 10,000 meters
2 - 40,000 meters
2 - 100 meters
2 - 150 meters
2 - 300 meters
2 - 400 meters
2 - 10,000 meters