Belair 100S, Руководство по установке

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BelAir100SN Installation Guide Infrastructure Requirements for the BelAir100SN
May 18, 2010 Confidential Page 11 of 75
Document Number BDTK11001-A01 Preliminary
Frequency range • 5 to 42 MHz (edge to edge)
DOCSIS
• 5 to 65 MHz (edge to edge)
EuroDOCSIS / Dual
• 5 to 55 MHz (edge to edge)
DOCSIS-J
• 5 to 42 MHz edge to edge or
5 to 85 MHz edge to edge (DOCSIS)
• Optional upstream frequency range
5-85 MHz; Extended Upstream
Frequency Range
Bandwidth TDMA: 200, 400, 800, 1600, 3200 and
6400 kHz
S-CDMA: 1600, 3200 and 6400 kHz TDMA: 1600, 3200 and 6400 kHz
S-CDMA: 1600, 3200 and 6400 kHz
Optional pre-3.0-DOCSIS operation,
TDMA: 200, 400 and 800 kHz
Signal level TDMA:
+8 to +54 dBmV (32 QAM, 64 QAM)
+8 to +55 dBmV (8QAM, 16QAM)
+8 to +58 dBmV (QPSK)
S-CDMA:
+8 to +53 dBmV (all modulations) One US Channel in TCS: See Table 3 on
page 11 .
Two US Channels in TCS: See Table 4 on
page 12 .
Three or Four US Channels in TCS: See
Table 5 on page 12 .
Output level of cable modem can be automatically controlled by CMTS through
power ranging function in 1 dB steps.
Output return loss > 6 dB (5 to 42 MHz) and
(91 ~ 857 MHz) >6 dB (across the selected upstream
frequency range 5 to 42 MHz or 5 to
85 MHz).
> 6 dB (108 to 870 MHz or 108 to 1002
MHz if CM center frequency ranges up
to 999 MHz)
Table 2: Cable Modem Receiver Characteristics (Continued)
Characteristic DOCSIS 2.0 DOCSIS 3.0
Table 3: Cable Modem Output Levels (One US Channel in TCS)
TDMA Modulation Output Level
QPSK Pmin to +61 dBmV
8 QAM, 16 QAM Pmin to +58 dBmV
32 QAM, 64 QAM Pmin to +57 dBmV