Paradyne 8820, Руководство по установке

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2. Installation
8820-A2-GN20-80 November 2004
2-5
Mounting Configurations
The 8820 BAC comes equipped with mounting brackets to support installation in
19-inch (48.3 cm) Electronic Industries Association (EIA)-type or 23-inch (58.4 cm)
NEBS-type racks. Installation of the 8820 chassis in a European
Telecommunication Standards Institute (ETSI)-type rack requires a different set of
custom mounting brackets.
The following figure depicts an example of a chassis mounting configuration with
three chassis in a rack.
CAUTION:
Although three BACs will fit into one rack, be sure that after all circuit
cards are installed, the final configuration does not exceed NEBS heat
release requirements. The NEBS requirement for a rack of this size is
181.2 watts per square foot. When using a standard transmission bay (12
inch-deep frame), the footprint is 7 square feet. This equals 1268 watts
maximum per frame or rack when used in a NEBS location.
NOTE:
In this guide, the term rack refers to a CO rack, cabinet, frame, or bay.
ALARMS
Major Minor Fan B A
POWER
48V R
T
N
48V NEG
POWER ENTRY MODULE
LEFT UNIT: LINE A RIGHT UNIT: LINE B
WARNING! POWER MUST BE DISCONNECTED AT THE SOURCE
BEFORE REMOVING OR INSTALLING THIS PWR ENTRY MODULE
48V R
T
N
48V NEG
POWER ENTRY MODULE
LEFT UNIT: LINE A RIGHT UNIT: LINE B
WARNING! POWER MUST BE DISCONNECTED AT THE SOURCE
BEFORE REMOVING OR INSTALLING THIS PWR ENTRY MODULE
04-17546
Three BACs in a Rack
ALARMS
Major Minor Fan B A
POWER
48V R
TN
48V NEG
POWER ENTRY MODULE
LEFT UNIT: LINE A
RIGHT UNIT: LINE B
WARNING! POWER MUST BE DISCONNECTED AT THE SOURCE
BEFORE REMOVING OR INSTALLING THIS PWR ENTRY MODULE
48V R
TN
48V NEG
POWER ENTRY MODULE
LEFT UNIT: LINE A
RIGHT UNIT: LINE B
WARNING! POWER MUST BE DISCONNECTED AT THE SOURCE
BEFORE REMOVING OR INSTALLING THIS PWR ENTRY MODULE
ALARMS
Major Minor Fan B A
POWER
48V R
T N
48V NEG
POWER ENTRY MODULE LEFT UNIT: LINE A
RIGHT UNIT: LINE B
WARNING! POWER MUST BE DISCONNECTED AT THE SOURCE
BEFORE REMOVING OR INSTALLING THIS PWR ENTRY MODULE
48V R
T N
48V NEG
POWER ENTRY MODULE LEFT UNIT: LINE A
RIGHT UNIT: LINE B
WARNING! POWER MUST BE DISCONNECTED AT THE SOURCE BEFORE REMOVING OR INSTALLING THIS PWR ENTRY MODULE
SCP
SERIAL
CLOCK
A
ALARM
OUT
CLOCK
B
MCP
SERIAL
ALARM
IN
HUB-2
LAN
MCP
LAN
TAP
OUT
SCP
LAN
HUB-1
LAN
TAP
IN
SCP
SERIAL
CLOCK
A
ALARM
OUT
CLOCK
B
MCP
SERIAL
ALARM
IN
HUB-2
LAN
MCP
LAN
TAP
OUT
SCP
LAN
HUB-1
LAN
TAP
IN
SCP SERIAL
CLOCK A
ALARM OUT CLOCK B
MCP SERIAL ALARM IN
HUB-2 LAN
MCP LAN
TAP OUT SCP LAN
HUB-1 LAN TAP IN