Juniper G10 CMTS, Hardware Manual

Page: 149 / 210

•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
RF Measurements 133
Chapter 7
RF Measurements
This chapter provides the procedures for measuring the downstream and upstream RF
signals of a DOCSIS Module using a spectrum analyzer. You can follow these procedures
immediately after the initial installation and configuration of the G10 CMTS to ensure the
system is configured and operating properly. In addition, these procedures can assist you
with the diagnosis of RF issues that are detected by spectrum monitoring applications such
as the ServiceGuard Management System (see “ServiceGuard Management System” on
page 147).
The procedures assume the use of a Hewlett Packard HP8591C CATV Analyzer, but any
equivalent spectrum analyzer will suffice.
This chapter discusses the following topics:
!
Downstream RF Measurement in CATV Mode on page 134
!
Downstream RF Measurement in Spectrum Analyzer Mode on page 135
!
Upstream RF Measurement on page 137