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DOXport 1110 Specifications 19

DOXport 1110 Specifications

The Com21 DOXport 1110 cable modem complies with DOCSIS specifications. Table 4 lists

detailed operating and environmental specifications.

Table 4:

Specifications

Parameter Specification

DOWNSTREAM

Demodulation 64QAM/256QAM

Physical speed 30 Mbps (64QAM) / 43 Mbps (256QAM)

Error correction Reed Solomon + Trellis (Enhances Annex B)

Frequency range 88 MHz to 860 MHz (edge-to-edge)

Bandwidth 6 MHz

Input signal level -15dBmV to +15dBmV

Input impedance 75 ohms

Return loss > 6 dB from 88 MHz to 860 MHz

UPSTREAM

Modulation QPSK /16QAM

Physical speed

320, 640, 1280, 2560, 5120 Kbps (QPSK)

640, 1280, 2560, 5120, 10240 Kbps (16QAM)

Error correction Reed Solomon

Frequency range 5 to 42 MHz (edge-to-edge)

Bandwidth 200, 400, 800, 1600, 3200 kHz

Output signal level

+8 dBmV to +58 dBmV (QPSK)

+8 dBmV to +55 dBmV (16QAM)

SNMP MANAGEMENT

MIB Group MIB II, MCNS MIB

INTERFACES

Ethernet 10/100 Base-T (full duplex), RJ-45 Connector

Cable F type female connector, 75 ohm

USB USB 1.1, B-Type female connector

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