ADC CUDA 3 - Manual (Page 421)

Cuda 12000 IP Access Switch CLI-based Administration Guide
Defining Modulation Profiles 419
Mod qpsk
The Mod qpsk parameter is the modulation type for an upstream channel.
Acceptable values are QPSK and QAM16.
You set the modulation type by performing the following tasks:
.
Pre-len
Preamble pattern length. You set the preamble length by performing the
following tasks:
.
Task Command
1. Enter cable interface
mode.
interface cable <c/s/i>
2. Configure the
modulation type.
modulation-profile <profile number>
interval-usage {initial | long | request | short |
station} mod {qam16 | qpsk}
Task Command
1. Enter cable interface
mode.
interface cable <c/s/i>
2. Configure the
preamble length.
modulation-profile <profile number>
interval-usage {initial | long | request | short |
station} pre-len <2..448>