Motorola SB5101 - SURFboard - 30 Mbps Cable Modem Manuale d'uso - Pagina 2

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Motorola SB5101 - SURFboard - 30 Mbps Cable Modem Manuale d'uso
POST (Note A)
Modem begins
scanning for
Scanning begins.
downstream
Modem looks for
64QAM then
256QAM
at each
frequency.
Modem begins
ranging at power
Using UCD information
level 12dBmV or
begin ranging power at
the last valid
specified upstream
upstream power
frequency. (Note C.)
level, moving up
in 12dBmV steps
to maximum of
58dBmV (QPSK)
or 55dBmV
(16QAM).
Successful?
RF link is established.
Modem will now issue a
DHCP broadcast.
CM assigned
Modem
Power-on
Did POST
Hardware failure,
No
Pass?
replace modem
Yes
(Note B)
64QAM or
256QAM
No
Next 6Mhz
Scan
DOCSIS
No
sync?
Yes
Yes
Ranging
Yes
(Note D)
Yes
IP address?
Establish Time of
Day using server
IP provided by
DHCP
Did CM get
TOD?
Yes
Using TFTP server &
filename from DHCP,
download the TFTP
configuration file
Yes
CM receive
config file?
Yes
BLP Enabled?
Yes
Complete
registration with
CMTS
Yes
Yes
Initialization
Complete (Note E)
No
Motorola, the stylized M Logo and SURFboard
are registered in the US Patent & Trademark
Office. SURFboard is a registered trademark of
Motorola, Inc. DOCSIS is a registered trademark
of Cable Television Laboratories, Inc. All other
product or service names are the property of their
respective owners. © Motorola Inc. 2009. All
rights reserved.
Log error and
No
continue
Key
No
Authorization