Cisco Cisco uBR-MC3Gx60V-RPHY Broadband Processing Engine Installation Guide
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Cisco uBR10-MC5X20S/U/H Cable Interface Line Card Hardware Installation Guide
OL-18277-03
Technical Specifications and Component Part Numbers
shows DOCSIS 2.0 input specifications.
Output
shows output specifications.
Noise
shows noise specifications.
1.
The DOCSIS specifications state that each channel width has a range that it can work within.
Table 7
DOCSIS 2.0 Supported Upstream Modulation Schemes (US0—US19)
Channel
Width–MHZ
Width–MHZ
Symbol
Rate–Msym/s
Rate–Msym/s
Max Throughput–Mbps
Nominal Throughput–Mbps
Maximum
Range–dBmV
Range–dBmV
1
1.
The DOCSIS specifications state that each channel width has a range that it can work within.
QPSK
16–QAM
64–QAM
QPSK
16–QAM
64–QAM
6.4
5.12
10.12
20.48
30.72
8.8
17.6
26.4
–1 to +29
Table 8
Output Specifications
Description
Specification
Supported modulation format
Downstream (DS0–DS4)
Downstream (DS0–DS4)
64–QAM
256–QAM
Normal operating channel bandwidth
DOCSIS: 6 MHz, EuroDOCSIS: 8 MHz
RF output power range
+50 to +61 dBmV
Operating frequency range
70–860 MHz, edge–to–edge
Output return loss
14 dB up to 750 MHz, 13 dB above 750 MHz
Worst–case spurious amplitude in the 50–860 MHz
range when the upconverter is a maximum power
output
range when the upconverter is a maximum power
output
–60 dBc at +61 dBmV output
Frequency stability
–5C + 55C: < ± 2ppm
Frequency adjustment resolution
Frequency can be adjusted in 12.5 kHz steps
Amplitude adjustment resolution
Output can be set in 1 dB steps
In–channel frequency response
+/–0.25 dB over operating channel bandwidth
In–channel group delay
50 nanoseconds over operating channel
bandwidth
bandwidth
In–channel carrier–to–noise ratio
60 dB over operating channel bandwidth
Out–of–channel carrier–to–noise ratio
70 dB