Motorola SURFboard SBG940E - Manual (Page 3)

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MOTOROLA, the Stylized M Logo, and SURFboard are registered in the U.S. Patent and Trademark Office. Wi-Fi and the Wi-Fi Alliance logo are registered marks for the Wi-Fi
Alliance. All other product or service names are the property of their respective owners. © Motorola, Inc. 2008. All rights reserved.
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DATA SHEET
SBG940E
SURFboard Wireless Cable Modem Gateway
Communication
DOWNSTREAM
Modulation 64 or 256 QAM
Max. Data Rate* 51 Mbps
Bandwidth 8 MHz
Symbol Rate 64 QAM 6.952 Msym/s,
256 QAM 6.952 Msym/s
Operating Level Range 64 QAM 43 to 73 dBμV,
256 QAM 47 to 77 dBμV
Input Impedance 75 Ω (nominal)
Frequency Range 108 MHz to 860 MHz
UPSTREAM
Modulation 8***, 16, 32***, 64***,
128**** QAM or QPSK
Max. Channel Rate** 30 Mbps
Bandwidth 200 kHz, 400 kHz, 800 kHz, 1.6
MHz, 3.2 MHz, 6.4*** MHz
Symbol Rates 160, 320, 640, 1280, 2560,
5120*** ksym/s
Operating Level Range
A-TDMA
68 to 114 dBμV (32 QAM,
64 QAM)
68 to 115 dBμV (8 QAM, 16
QAM)
68 to 118 dBμV (QPSK)
S-CDMA 68 to 113 dBμV (all modulations)
Output Impedance 75 Ω (nominal)
Frequency Range 5 MHz to 65 MHz (edge to edge)
*Actual speeds will vary, and are often
less than the maximum possible. Data
transmission speed is approximate and
depends on the configuration and
capacity of your network, as well as the
amount of traffic on the network.
** Actual data throughput will be less
due to physical layer overhead (error
correction coding, burst preamble, and
guard interval).
*** With A-TDMA- or S-CDMA-enabled
CMTS.
**** With S-CDMA-enabled CMTS.
Certain features may not be activated by
your service provider, and/or their
network settings may limit the feature’s
functionality. Additionally, certain features
may require a subscription. Contact your
service provider for details.
All features, functionality, and other
product specifications are subject to
change without notice or obligation.