Arris SB6121 User Manual Specifications Data Sheets
User Manual: Arris SB6121 Specifications
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High Value and Increased Data Rates
The easy-to-use SB6121 SURFboard DOCSIS
3.0 Cable Modem unlocks innovative high-
bandwidth data and multimedia services.
Utilizing the power of DOCSIS 3.0, the
SB6121 enables channel bonding of up to
four downstream channels and four upstream
channels, which provides download speeds
up to 172 Mbps. The SB6121’s higher-speeds
enable high-bandwidth, multimedia services.
Economic and Flexible
The SB6121 SURFboard DOCSIS 3.0 Cable
Modem provides an economic option for Ultra-
Broadband services, with four times the current
maximum user data throughput approximating
172 Mbps.
Backwards compatible to DOCSIS 1.0, 1.1 and
2.0, the SB6121 also supports both IPv4 and
IPv6, Advanced Encryption Services, and all
other DOCSIS 3.0 standards.
As part of ARRIS DOCSIS 3.0 family of
products, the SB6121 includes an enhanced
tuner that supports up to a 1 GHz downstream
input, which allows for high-value services,
such as, interactive gaming, and HD video
streaming.
The SB6121 features a 10/100/1000Base-T
Ethernet (RJ-45) port, as well as intuitive, easy-
to-read front-panel operational status LEDs.
SURFboard® SB6121
Cable Modem
Highlights
Compatible with
Windows®, Macintosh®,
and UNIX® computers
DOCSIS 3.0 Certified,
featuring:
• Channel bonding
of up to four
downstream
channels and four
upstream channels
increasing data
rates to well over
100 Mbps in each
direction
• Supports IPv4 and
IPv6 to expand
network addressing
capabilities
• Enhanced security:
supports AES traffic
encryption
Enhanced network
management
Ability to provision and
manage IP multicast
GigE (RJ-45) data port
with Auto Negotiate and
Auto MDIX
User-friendly online
diagnostics
Power saving Energy
Conservation Switch
allows user to disable
the modem when not in
use (optional feature)
Internal Low Pass Filter
to eliminate MoCA
signal overload
Count on the ARRIS SURFboard SB6121 DOCSIS® 3.0 Cable Modem
to deliver innovative, ultra-broadband data service.
With SURFboard cable modems, high-speed
Internet access is always at your fingertips –
always on and always connected. The SB6121
is the ideal competitive solution for the high-
end residential user, the small home office
owner, and the medium to large business
enterprise.
DATA SHEET SB6121 SURFBOARD® CABLE MODEM
General Specifications
Cable Interface 75 Ω F-connector
CPE Network Interface 10/100/1000Base-T Ethernet (RJ-45)
Data Protocol TCP/IP
Dimensions 5.24 in H x 5.24 in W x 1.65 in D
(133 mm x 133 mm x 42 mm)
Power 9W (nominal)
Input Power North America, 105 to 125 VAC, 60 Hz
Outside North America , 100 to 240 VAC, 50 to 60 Hz
Regulatory RoHS compliant, COC V3, Compliant per the “Code of Conduct on
Energy Consumption of Broadband Equipment”, CMM, MEPS
Downstream
Modulation 64 or 256 QAM
Capture Bandwidth 100 MHz (edge to edge)
Maximum Theoretical Data Rate*
DOCSIS 171.537 Mbps (4 channels) / 42.884 (single channel) @ 256 QAM at 5.36 Msym/s
Bandwidth
DOCSIS ≤ 24 MHz
Symbol Rate
DOCSIS 64 QAM 5.057 Msym/s; 256 QAM 5.361 Msym/s
Operating Level Range –15 to 15 dBmV
Bonded Channel RF
Level Tolerance 10dBmV
Input Impedance 75 Ω (nominal)
Frequency Range DOCSIS 108 to 1002 MHz (edge to edge),
Optional 91 to 1002 MHz (edge to edge)
Frequency Plan
DOCSIS Annex B
Security DOCSIS 3.0 Security (BPI+, EAE, SSD)
Network Management SNMP v2 & v3
Provisioning Supports IP addressing using IPv4 and/or IPv6 (dual stack)
Environmental
Operating Temperature 32 °F to 104 °F (0 °C to 40 °C)
Storage Temperature –22 °F to 158 °F (–30 °C to 70 °C)
Operating Humidity 5 to 95% R.H. (non-condensing)
Modulation QPSK and 8, 16, 32, 64, 128 QAM
Maximum Channel Rate*
DOCSIS 131.072 Mbps (4 channels) / 32.768 Mbps (single channel): @ 128 QAM at 6.4 MHz
Channel Width 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 Level range per channel (Multiple Transmit Channel mode
disabled, or only Multiple Transmit Channel mode enabled with one channel in the TCS)
DOCSIS
TDMA
Pmin to +57 dBmV (32 QAM, 64 QAM)
Pmin to +58 dBmV (8 QAM, 16 QAM)
Pmin to +61 dBmV (QPSK)
S-CDMA
Pmin to +56 dBmV (all modulations), where:
Pmin = +17 dBmV, 1280 kHz modulation rate
Pmin = +20 dBmV, 2560 kHz modulation rate
Pmin = +23 dBmV, 5120 kHz modulation rate
Upstream
DATA SHEET SB6121 SURFBOARD® CABLE MODEM
©ARRIS Enterprises, Inc. 2014 All rights reserved. No part of this publication may be reproduced in any form or by any means or used to make any derivative work (such as translation,
transformation, or adaptation) without written permission from ARRIS Enterprises, Inc. (“ARRIS”). ARRIS reserves the right to revise this publication and to make changes in content
from time to time without obligation on the part of ARRIS to provide notification of such revision or change. ARRIS and the ARRIS logo are all trademarks of ARRIS Enterprises, Inc. Other
trademarks and trade names may be used in this document to refer to either the entities claiming the marks and the names of their products. ARRIS disclaims proprietary interest in the
marks and names of others. MOTOROLA and the Stylized M logo are trademarks or registered trademarks of Motorola Trademark Holdings, LLC. and are used by ARRIS under license.
All other product or service names are the property of their respective owners. The capabilities, system requirements and/or compatibility with third-party products described herein are
subject to change without notice.
365-095-26271 x.1 06/14
COMPLIANT
Level range per channel (two channels in the TCS)
TDMA
Pmin to +54 dBmV (32 QAM, 64 QAM)
Pmin to +55 dBmV (8 QAM, 16 QAM)
Pmin to +58 dBmV (QPSK)
S-CDMA
Pmin to +53 dBmV (all modulations), where:
Pmin = +17 dBmV, 1280 kHz modulation rate
Pmin = +20 dBmV, 2560 kHz modulation rate
Pmin = +23 dBmV, 5120 kHz modulation rate
Level range per channel (three or four channels in the TCS)
TDMA
Pmin to +51 dBmV (32 QAM, 64 QAM)
Pmin to +52 dBmV (8 QAM, 16 QAM)
Pmin to +55 dBmV (QPSK)
S-CDMA
Pmin to +53 dBmV (all modulations), where:
Pmin = +17 dBmV, 1280 kHz modulation rate
Pmin = +20 dBmV, 2560 kHz modulation rate
Pmin = +23 dBmV, 5120 kHz modulation rate
Output Impedance 75 Ω (nominal)
Frequency Range DOCSIS 5-42 MHz (edge to edge),
optional DOCSIS 5 to 65 MHz (edge to edge)
Compatibility PC: 90496, Pentium, or later; Windows Vista™, 2000, XP or 7 or Linux® with Ethernet
connection (older versions of Windows, although not specifically supported, will work
with this cable modem)
Macintosh: Power PC or later; OS 9 or higher, Ethernet connectionOS 9 or higher,
Ethernet connection
UNIX: Ethernet connection
Home Networking: Ethernet router or wireless access point
Upstream (continued) 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).
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. DOCSIS 3.0
modem capabilities
are dependant on the
services available
through your cable
provider.
