Cisco 7246 - uBR Router Hardware Installation Manual page 120

Measuring the Downstream RF Signal
Set the spectrum analyzer to CATV mode (CATV analyzer option) and select the channel measurement
Step 3
option to view the downstream intermediate frequency (IF) signal. Your analyzer should display a signal
similar to the one shown in
Note Figure 4-24
analyzer in this mode.
Figure 4-24
Advance to the last of the three screens in this display. Your analyzer should display a signal similar to
Step 4
the one shown in
Figure 4-25
Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide
4-24
Figure 4-24.
shows the first of three screens that will be displayed by an Agilent 8591C when you use the
Figure 4-25 is the last of the three screens displayed.
Viewing the Downstream IF Signal on a Spectrum Analyzer in CATV Mode—Initial
Screen
Figure 4-25.
Viewing the IF Signal on a Spectrum Analyzer in CATV Mode—Preliminary Digital
Channel Power Screen
Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend
OL-5421-03