Dell PowerConnect J-EX4500, Hardware Manual

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Table 20: SFP+ Direct Attach Copper (DAC) Passive Cable Specifications
Value Specification Model
10 Gbps full-duplex serial transmission Rate • 1-m DAC SFP+ Cable
EX-SFP-10GE-DAC-1m
• 3-m DAC SFP+ Cable
EX-SFP-10GE-DAC-3m
• 7-m DAC SFP+ Cable
EX-SFP-10GE-DAC-7m
SFP+ passive Twinax cable assembly Connector type
3.3 V Supply voltage
0.57 W Power consumption (per end)
-40
°
C to 85
°
C Storage temperature
Twinax Cable type
• 30 AWG (1-m and 3-m lengths)
•
24 AWG (7-m length)
Wire AWG
1 in. Minimum cable bend radius
100 ohms Cable characteristic impedance
2% maximum Crosstalk between pairs
1.31 nsec/ft Time delay
•
1 m (3.3 ft)
• 3 m (9.9 ft)
•
7 m (23 ft)
Length
Standards Supported by These Cables
The cables comply with the following standards:
• SFP mechanical standard SFF-843—see
ftp://ftp.seagate.com/sff/SFF-8431.PDF
.
• Electrical interface standard SFF-8432—see
ftp://ftp.seagate.com/sff/SFF-8432.PDF
.
• SFP+ Multi-Source Alliance (MSA) standards
Related
Documentation
Optical Interface Support in J-EX4500 Switches on page 40
•
•
Installing a Transceiver in a J-EX Series Switch on page 96
•
Removing a Transceiver from a J-EX Series Switch on page 137
Grounding Cable and Lug Specifications for J-EX4500 Switches
For installations that require a separate grounding conductor to the chassis, the switch
must be adequately grounded before power is connected to ensure proper operation
and to meet safety and electromagnetic interference (EMI) requirements. To ground a
48
Dell PowerConnect J-Series J-EX4500 Ethernet Switch Hardware Guide