Техническая Спецификация для Cisco 10GBASE-LW XENPAK Module XENPAK-10GB-LW=
Модели
XENPAK-10GB-LW=
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Cisco XENPAK-10GB-ER***
1550
SMF
G.652**
–
40 km****
Cisco XENPAK-10GB-ZR
1550
SMF
Operates on any
SMF type
-
80 km
*
Minimum cabling distance for optical XENPAK modules (-LX4, -SR, -LR, -ER) is two meters, according to the IEEE 802.3ae standard.
**
Data based on standard G.652 SMF. Even though dispersion-shifted fiber enables reducing signal dispersion to travel longer distances, the signal
attenuation still limits its distance.
attenuation still limits its distance.
***
Requires 5 dB 1550 nm fixed loss attenuator for < 20 kms. Attenuator is available as a spare. The part number is WS-X6K-5DB-ATT=.
****
Links longer than 30 km are considered engineered links.
Standards
•
IEEE 802.3ae (-LX4, -SR, -LR, -LW, -ER)
•
IEEE 802.3ak (-CX4)
Table 2 shows the main optical characteristics for the Cisco XENPAK modules. The Cisco XENPAK-10GB-CX4 is not an optical module and
therefore is not listed in the table.
Table 2.
Optical Transmit and Receive Specifications for IEEE 802.3 standard compliant modules
Product
Type
Transmit Power (dBm)
Receive Power (dBm)
Transmit and Receive
Wavelength (nm)
Maximum
Minimum
Maximum
Minimum
Cisco XENPAK-
10GB-LX4
10GBASE-LX4
WWDM
1300 nm MMF
–0.5 per lane
–
–0.5 per lane
–14.4 per
lane*
Four lanes; overall
range: 1269 to 1356
Cisco XENPAK-
10GB-SR
10GBASE-SR
850 nm MMF
–1.0**
–7.3
–1.0
–9.9
840 to 860
Cisco XENPAK-
10GB-LR***
Cisco XENPAK-
10GB-LW
10GBASE-LR
1310 nm SMF
0.5
–8.2
0.5
–14.4
1260 to 1355
Cisco XENPAK-
10GB-ER****
10GBASE-ER
1550 nm SMF
4
–4.7
–1.0
–15.8
1530 to 1565
*
OMA sensitivity.
**
The launch power shall be the lesser of the class 1 safety limit or the maximum receive power. Class 1 laser requirements are defined by IEC 60825-1: 2001.
***
WS-G6488 has the same optical parameters as XENPAK-10GB-LR.
****
WS-G6483 has the same optical parameters as XENPAK-10GB-ER.