■
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 Topics ■ Optical Interface Support in EX8200 Switches
■ Optical Interface Support in EX4500 Switches on page 31
■ Installing a Transceiver in an EX Series Switch on page 81
■ Removing a Transceiver from an EX Series Switch on page 126
Grounding Cable and Lug Specifications for 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
an EX4500 switch, connect a grounding cable to earth ground and then attach it to
the chassis grounding points.
CAUTION: For installations that require a separate grounding conductor to the chassis,
use the protective earthing terminal on the switch chassis to connect to earth ground.
Before switch installation begins, a licensed electrician must attach a cable lug to the
grounding cables that you supply. See “Connecting Earth Ground to an EX Series
Switch” on page 83. A cable with an incorrectly attached lug can damage the switch.
A pair of threaded inserts (PEM nuts) is provided on the left side towards the rear
corner of the chassis for connecting the switch to earth ground. The grounding points
fit UNC 10-32 screws. The grounding points are spaced at 0.625 in. (15.86 mm).
The grounding cable that you provide for an EX4500 switch must be 14 AWG (2
mm
2
), minimum 90°C wire, or as permitted by the local code.
NOTE: Grounding is provided to an AC-powered switch when you plug its power
supplies into grounded AC power receptacles.
WARNING: The switch is pluggable type A equipment installed in a restricted-access
location. It has a separate protective earthing terminal provided on the chassis in
addition to the grounding pin of the power supply cord. This separate protective
earthing terminal must be permanently connected to earth ground for installations
that require a separate grounding conductor to the chassis.
Related Topics AC Power Supply in EX4500 Switches on page 18■
Grounding Cable and Lug Specifications for EX4500 Switches ■ 39
Chapter 3: Component Specifications
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