Motorola SBG940E manual Communication, Downstream, Upstream

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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

*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.

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)

Motorola, Inc. 101 Tournament Drive, Horsham, Pennsylvania 19044 U.S.A. www.motorola.com

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.

548525-001-a 0208 5733 0K

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