Ubee DDM3500 Cable Modem User Guide, September, 2010
Ubee Interactive
4
2 Introduction
Welcome to the Ubee family of data networking products. This document explains device operations and
instructions on how to connect and use the DDM3500 Cable Modem.
2.1 Device Specifications
This section provides the technical specifications of the DDM3500 Cable Modem.
Interfaces
Cable: F-Connector, Female
LAN: 1 10/100/1000 Mbps RJ-45 Port
DOCSIS 3.0/Euro DOCSIS 3.0 Certified
DOCSIS/Euro DOCSIS 1.0/ 1.1/2.0 Certified
CE/ FCC Class B
Downstream*
Frequency Range: 88MHz ~ 1002MHZ
Modulation: 64 / 256 QAM, Channel B/W: 6 MHz
Total Max Bandwidth (8 Channels): DOCSIS = 343 (304) Mbps, EuroDOCSIS = 444 (400) Mbps
Maximum Data Rate per Channel (up to 8 channels): DOCSIS = 30 Mbps (64 QAM), 42 Mbps (256
QAM), EuroDOCSIS = 41 Mbps (64 QAM), 55 Mbps (256 QAM)
Symbol Rate: 6952 Ksps
RF Input Power: -15 to +15dBmV (64 QAM), -15 to +15dBmV (256 QAM)
Input Impedance: 75
Ω
Upstream*
Frequency Range: 5MHz ~ 65MHz
Total Max Bandwidth (4 channels) = 122.88 (108) Mbps
Maximum Data Rate per Channel (up to 4 channels) [QPSK 0.32 ~ 10.24 Mbps, 8 QAM 0.48 ~ 15.36
Mbps, 16 QAM 0.64 ~ 20.48 Mbps, 32 QAM 0.80 ~ 25.60 Mbps, 64 QAM 0.96 ~ 30.72 Mbps, 128
QAM/TCM 30.72 Mbps]
Symbol Rate: 160, 320, 640, 1280, 2560, 5120 Ksp
Modulation A-TDMA: QPSK, 8, 16, 32, 64QAM, SCMDA: QPSK, 8, 16, 32, 64, 128QAM
RF Output Power: TDMA/ATDMA: +8dBmV to +54dBmV (32/64 QAM). ATDMA Only: +8dBmV to
+55dBmV (8/16 QAM), +8dBmV to +58dBmV(QPSK). S-CDMA: +8dBmV to +53dBmV (all
modulations)
