Juniper T640 Hardware Manual page 418

T640 Core Router Hardware Guide
I
immunity standards............................................................334
installation
DC power, connecting......................124, 126, 128, 251
parts received, verifying................................................73
PICs, connecting...........................................................120
power requirements...................................................345
preparing to install..........................................................71
router....................................................................85, 87, 95
unpacking the router......................................................71
installation handle
attach.................................................................................88
remove.........................................................................92, 111
installation instructions
alarm relay contact wires
during initial installation....................................119
tools required..........................................................117
cable, auxiliary or console port (for Routing
Engine management)
during initial installation....................................119
for maintenance or replacement..................183
tools required..........................................................117
cable, Ethernet port (for Routing Engine
management)
during initial installation....................................118
for maintenance or replacement...................181
tools required..........................................................117
DC power and grounding cables
tools required..........................................................117
SFP....................................................................................234
XENPAK module...........................................................237
instructions
cleaning See cleaning instructions
maintenance See maintenance guidelines
PIC.............................................................................156
packing
router for shipment............................................379
returning router...................................................377, 380
interference
electromagnetic..........................................................346
radio frequency............................................................346
J
Junos OS
modularity and scalability............................................8
388
L
LCD on craft interface
alarm mode.....................................................................44
description........................................................................43
idle mode..........................................................................43
LEDs
alarm (red and yellow on craft interface)
description...............................................................42
Control Board..................................................................38
FPC......................................................................................45
host subsystem..............................................................44
power supplies..........................................51, 53, 56, 60
SCG.......................................................................................41
SIB................................................................................30, 45
T-series Control Board.................................................38
link loss, calculating............................................................363
lithium battery compliance..............................................338
lug for grounding cables....................................................345
lugs for DC power cables...................................................352
M
maintaining
air filters...........................................................................146
fan trays............................................................................147
host subsystem.............................................................148
power supplies..............................................................159
SCGs.................................................................................150
SIBs....................................................................................158
T-CBs................................................................................149
maintenance
warnings..........................................................................319
maintenance guidelines
cable
PIC.............................................................................156
FPC......................................................................................151
overview...........................................................................145
PIC......................................................................................156
manuals
comments on...............................................................xxvii
midplane.....................................................................................16
description.........................................................................16
functions............................................................................16
modal dispersion in fiber-optic cable..........................362
mode loss, higher-order.....................................................361
multimode fiber-optic cable See cable, fiber-optic
N
NEBS standards...................................................................334
notice icons.............................................................................xxvi
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