7750 SR-a4 and SR-a8 Installation Guide 13
List of Figures
7750 SR-a4 and 7750 SR-a8 Overview................................................................................................23
Figure 1 7750 SR-a4 Chassis Front View....................................................................................................25
Figure 2 7750 SR-a4 Chassis Slot Identification..........................................................................................26
Figure 3 7750 SR-a8 Chassis Front View....................................................................................................28
Figure 4 7750 SR-a8 Chassis Slot Identification..........................................................................................29
Figure 5 7750 SR-a CPM-a Features ..........................................................................................................32
Figure 6 Internal CF drive ............................................................................................................................34
Figure 7 7750 SR-a IOM-a ..........................................................................................................................36
Figure 8 7750 SR-a AC PSU ......................................................................................................................39
Figure 9 7750 SR-a ā48 VDC PSU..............................................................................................................39
Figure 10 7750 SR-a4 Fan Tray ....................................................................................................................41
Figure 11 7750 SR-a8 Fan Tray ....................................................................................................................41
Figure 12 Air Filter Carrier (7750 SR-a4) .......................................................................................................43
Figure 13 7750 SR-a Impedance Panels .......................................................................................................44
Site Preparation .................................................................................................................................... 47
Figure 14 EIA-310 19-in. (482.6 mm) Equipment Rack Dimensions .............................................................58
Figure 15 Chassis Clearance Requirements for Horizontal Mount (View from Top) .....................................60
Installing the 7750 SR-a Chassis ........................................................................................................ 71
Figure 16 Unpacking the 7750 SR-a Chassis ................................................................................................73
Figure 17 Installing the 7750 SR-a4 Chassis in a 19-in. (482.6 mm) EIA-310 Rack .....................................77
Figure 18 Installing the 7750 SR-a8 Chassis in a 19-in. (482.6 mm) EIA-310 Rack .....................................78
Figure 19 Attaching the 9-RU ETSI Adapter Brackets to the 7750 SR-a4 Chassis .......................................80
Figure 20 Attaching the 13-RU ETSI Adapter Brackets to the 7750 SR-a8 Chassis .....................................81
Figure 21 Installing the 7750 SR-a4 Chassis in the ETSI Rack.....................................................................82
Figure 22 Installing the 7750 SR-a8 Chassis in the ETSI Rack.....................................................................83
Figure 23 Preparing the Ground Wire ............................................................................................................86
Figure 24 Attaching the Chassis Ground Connector......................................................................................87
Figure 25 Wire-Form Cable Guides ...............................................................................................................89
Installing PSUs ..................................................................................................................................... 91
Figure 26 Installing an AC PSU (7750 SR-a4)...............................................................................................94
Figure 27 Installing a AC PSU (7750 SR-a8).................................................................................................95
Figure 28 AC Power Cord Connection ..........................................................................................................97
Figure 29 Installing a ā48 VDC PSU (7750 SR-a4) .......................................................................................98
Figure 30 Installing a ā48 VDC PSU (7750 SR-a8) .......................................................................................99
Figure 31 ā48 VDC Ground and Power Connection ....................................................................................101
Figure 32 Attaching the Ring Lug to a Ground Cable ..................................................................................102
Figure 33 Attaching the Ring Lug to a Power Cable....................................................................................103
Figure 34 Example of Redundant DC Power Feeds ....................................................................................104
Installing Components....................................................................................................................... 107
Figure 35 Installing the Fan Tray (7750 SR-a4)...........................................................................................109
Figure 36 Location of Internal CF Card on CPM-a.......................................................................................111