Motorola SBG940 manual 112, Downstream, Upstream, General

Overview Installation Troubleshooting Contact FAQ Specifications Glossary License

Configuration: Basic Gateway TCP/IP Wireless USB

Downstream
Modulation	64 or 256 QAM
Maximum data ratea	38 Mbps
Frequency range	88 to 860 MHz (30 kHz minimum step size)
Bandwidth	6 MHz
Maximum symbol rate	5.069 Msym/s (64 QAM)
	5.361 Msym/s (256 QAM)
Operating level range	-15 to +15 dBmV
Input impedance	75 ohms (nominal)
Frequency range	88 to 860 MHz
Upstream
Modulation	QPSK or 8b, 16, 32b, 64b, or 128b QAM
Modulation rate	TDMA: 160, 320, 640, 1280, 2560, and 5120 KHz
(nominal)	S-CDMA: 1280, 2560, and 5120 KHz
Maximum data ratec	30 Mbps
Bandwidth	TDMA: 200, 400, 800, 1600, 3200, and 6400b kHz
	S-CDMA: 1600, 3200, and 6400 kHz

Symbol rates

Operating level range (one channel)

160, 320, 640, 1280, and 2560 ksym/s

TDMA:

•+8 to +54 dBmV (32 QAM, 64 QAM)

•+8 to +55 dBmV (8 QAM, 16 QAM)

•+8 to +58 dBmV (QPSK)

S-CDMA:

•+8 to +53 dBmV (all modulations)

Output impedance	75 ohms nominal
Frequency range	5 to 42 MHz (edge to edge)
Output return loss	> 6 dB (5 to 42 MHz)
General
Cable interface	F-Connector, female, 75 ohm
CPE network interface	USB, Ethernet 10/100Base-T (auto sensing)
CPE wireless interface	IEEE 802.11g
Data protocol	TCP/IP

a.Actual speed will vary. Upload and download speeds are affected by several factors including, but not limited to network traffic and services provided by your cable provider, computer equipment, server type, number of connections to the server, and the availability of Internet routers.

b.With a CMTS supporting A-TDMA or S-CDMA only.

c.Actual speed will vary. Maximum speed of 30 Mbps is only attainable with A-TDMA or S-CDMA technology.

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