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ADVANCED NETWORK & TELECOM SYSTEMS

SB3100/SB3100i/SB3100D

SB3100/SB3100i/SB3100D

101 Tournament Drive, Horsham, PA 19044

800.523.6678    www.gi.com

www.surfboard.com

©Copyright 1999, General Instrument Corporation.
General Instrument is a registered trademark and the 
GI logo is a trademark of General Instrument Corporation.

3 models available: SB3100, SB3100i
international version, and the
SB3100D dual mode

Hardware ready for DOCSIS 1.1

Attractive compact design
(40% smaller casing than the SB2100)

Improved LEDs for troubleshooting

Power supply inside the enclosure

(no power brick)

Supports up to 32 users

Ideal for retail

Cost reduction enables
better pricing

Now you can ride the wave

faster than ever before!

General Instrument has revolutionized the cable 

industry once again. Now accessing and surfing the 

Net is better than ever. Hold on tight, because the

fastest connection to the Net is here. Introducing 

the newest member of the GI SURFboard family, the

SB3100 cable modem—the most dynamic wave in

external cable modem design yet. The SB3100 cable

modem is hardware-ready to support the DOCSIS 1.1

specification standard, which calls for advanced 

Quality of Service (QoS) and Internet Protocol (IP) 

filtering functions. QoS guarantees increased Internet

access speed to those businesses or homes demanding

it... this translates into increased revenue potential for 

subscribers who require quicker connection. The

enhanced processor included in the SB3100 is 

5 times faster than its SB2100 counterpart, making 

it the fastest in the market and capable of handling 

current and future DOCSIS functions.

SURFBOARD DOCSIS BASED TWO-WAY EXTERNAL CABLE MODEM SPECIFICATIONS

MODEL SB3100

FEATURES

SB3100

SB3100I*

SB3100D

Interface to PC:

Ethernet 10BaseT

Ethernet 10BaseT

Ethernet 10BaseT

Data Protocol:

TCP/IP

TCP/IP

TCP/IP

Dimensions:

7.2”H x 2.8”W x 7.8”L

7.2”H x 2.8”W x 7.8”L

7.2”H x 2.8”W x 7.8”L

Power:

9 Watts

Input Power:

90-250 VAC, 47/63 Hz

Operating Level Range:

+8 to +55 dBmV (16QAM) 
+8 to +58 dBmV (QPSK)

DOWNSTREAM

Interface:

F-Connector

F-Connector

F-Connector

Modulation:

64 or 256 QAM

64 or 256 QAM

64 or 256 QAM

Maximum Data Rate:

38Mbps 

38Mbps

38Mbps

(into modem)

(into modem)

(in modem)

Bandwidth:

6 MHz

6 MHz

6 MHz

Symbol Rates (max.):

5,069 Msym/s

5,069 Msym/s

5,069 Msym/s 

(64 QAM)

(64 QAM)

(64 QAM)

5,361 Msym/s 

5,361 Msym/s

5,361 Msym/s

(256 QAM)

(256 QAM)

(256 QAM)

Operating Level Range:

-15 to +15 dBmV

-15 to +15 dBmV

-15 to +15 dBmV

Input Impedance:

75 

(nominal)

75 

(nominal)

75 

(nominal)

Total Input Power:

< 30 dBmV

< 30 dBmV

< 30 dBmV

Frequency Range:

88-860 MHz

88-860 MHz

88-860 MHz

(30 kHz min. step size)

(30 kHz min. step size)

(30 kHz min. step size)

ENVIRONMENTAL

Power:

9 Watts Nominal

9 Watts Nominal

9 Watts Nominal

Input Power:

100-240VAC, 50-60Hz

100-240VAC, 50-60Hz

100-240VAC, 50-60Hz

Operating Temperature:

0 to 40C

0 to 40C

0 to 40C

Storage Temperature:

-30 to +80C

-30 to +80C

-30 to +80C

Operating Humidity:

0 to 95% R.H. Non-Condensing

0 to 95% R.H. Non-Condensing

0 to 95% R.H. Non-Condensing

UPSTREAM

Interface:

F-Connector

F-Connector

F-Connector

Upstream Modulation:

16 QAM or QPSK

16 QAM or QPSK

16 QAM or QPSK

(variable symbol rates)

(variable symbol rates)

(variable symbol rates)

Maximum Data Rate:

10 Mbps

10 Mbps

10 Mbps

Bandwidth:

200-3200 kHz

200-3200 kHz

200-3200 kHz

Symbol Rates:

160, 320, 640, 1280,

160, 320, 640, 1280,

160, 320, 640, 1280, 

and 2560 ksym/s

and 2560 ksym/s

and 2560 ksym/s

Operating Level Range:

+8 to +55 dBmV(16QAM) 

+8 to +55 dBmV(16QAM) 

+8 to +55 dBmV (16QAM)

+8 to +58 dBmV (QPSK)

+8 to +58 dBmV (QPSK)

+8 to +58 dBmV (QPSK)

Output Impedance:

75 

(nominal)

75 

(nominal)

75 

(nominal)

Total Input Power:

< 35 dBmV

< 35 dBmV

< 35 dBmV

(varies by symbol rate)

(varies by symbol rate)

(varies by symbol rate)

Frequency Range:

5-42 MHz 

5-42 MHz

5-42 MHz

(edge to edge)

(edge to edge)

(edge to edge)

UPSTREAM—TELCO

Interface:

N/A

N/A

RJ-11 connector

Protocol:

V.42, V.32, or V.34

Maximum Upstream

33.6 kbps

Transmission Rate:

GI has done it again. The SB3100—yet another

superior innovation in the GI SURFboard cable

modem family, offering high-performance 

processors, superior RF design, operator-friendly

diagnostics, and superior field reliability. 

The SURFboard SB3100 cable modem—

21st Century Internet access... today.

CONCLUSION

*Internal power supply provides universal outlet functionality—all you need is a power cord.

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