Installation guide

Evaluating and Meeting Mini-GBIC Requirements
Consolidated "e" Series Hardware Installation Guide 33
loses induced by cable splices, connectors, and operating margin. Table 7 lists the minimum
attenuations that are required by each long range mini-GBIC to prevent saturation of the receiver.
RJ-45 Connector Jackets
Use RJ-45 cable with connector jackets that are flush with the connector or that have connectors with a
no-snag feature.
Using cable with jackets that are wider than the connectors can cause:
• Connectors that are not properly aligned with the port.
• Crowded cable installation, which can cause connectors to pop out of the port.
Figure 4 shows examples of connector jacket types that are not recommended as well as those that are
recommended.
Figure 4: RJ-45 connector jacket types
Table 7: Minimum attenuation requirements
Receivers
GBIC Type LX70 LX100
ZX (prior to
Rev 03)
ZX Rev 03 ZX mini
Transceivers
LX70 9 dB 13 dB 7 dB 7 dB 9 dB
LX100 8 dB 12 dB 6 dB 6 dB 8 dB
ZX (prior to
Rev 03)
2 dB 6 dB 0 dB 0 dB 2 dB
ZX Rev 03 5 dB 9 dB 3 dB 3 dB 5 dB
ZX mini 6 dB 10 dB 4 dB 4 dB 6 dB
0.1" = 1mm actual
39.37% : 254%
SPG_001
Not recommended
Better
Best