Ground The Chassis; Rack Mounting - Juniper G10 CMTS Hardware Manual

Ground the Chassis

•
•
•
• Ground the Chassis
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•

Rack Mounting

•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
94 JUNOSg 3.0 G10 CMTS Hardware Guide
! Connect to Power Sources on page 119
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.
Never power on the G10 CMTS without first grounding the
chassis.
This section describes the process for rack mounting the G10 CMTS into an EIA standard
19-inch rack. The mounting brackets are compatible with either of the following racks:
! Standard 1-3/4" EIA wide
1-1/4", 1/2", 1-1/4"
12-24 tapped
! Standard 2" EIA wide
1", 1"
12-24 tapped
The G10 CMTS is shipped from the factory with mounting brackets attached to the front of
the chassis for front-rack mounting. If the chassis is to be mid-rack mounted, you must
remove and reinstall the mounting brackets to the center of the chassis.
The following procedure assumes that all the contents of the shipping cartons, including the
G10 CMTS chassis, have been removed.
You must rack mount the G10 CMTS chassis prior to the
installation of any additional power supplies or modules.