Juniper Networks G10 CMTS manual Ground the Chassis

Ground the Chassis

•	! Connect to Power Sources on page 119
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•Ground the Chassis

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•	Prior to rack mounting the G10 CMTS, you should install an earth ground strap on the chassis,
•	particularly if the sides of the chassis will be inaccessible after it is rack mounted. Figure 6 on
•	page 13 shows the location of the chassis ground nuts on the chassis. The G10 CMTS
•	accessory kit contains a two-ring lug connector that you must crimp to the ground strap.
•	Using two of the supplied #12 screws and washers (a washer is installed between each bolt
•	and the lug connector), attach the ground strap to the chassis using 35 in-lb of torque on each
•	screw. The other end of the ground strap will be attached to earth ground after the chassis is
•	rack mounted.
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•		Never power on the G10 CMTS without first grounding the
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•		chassis.
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•	Rack Mounting
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•	This section describes the process for rack mounting the G10 CMTS into an EIA standard
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	19-inch rack. The mounting brackets are compatible with either of the following racks:
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•	! Standard 1-3/4” EIA wide
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	1-1/4”, 1/2”, 1-1/4”
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	12-24 tapped
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•	! Standard 2” EIA wide
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	1”, 1”
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	12-24 tapped
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•	The G10 CMTS is shipped from the factory with mounting brackets attached to the front of
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	the chassis for front-rack mounting. If the chassis is to be mid-rack mounted, you must
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	remove and reinstall the mounting brackets to the center of the chassis.
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•	The following procedure assumes that all the contents of the shipping cartons, including the
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	G10 CMTS chassis, have been removed.
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•		You must rack mount the G10 CMTS chassis prior to the
•		installation of any additional power supplies or modules.
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94 JUNOSg 3.0 G10 CMTS Hardware Guide