Performing Spectrum Measurements - JDS Uniphase Wavetek DSAM Series Quick Start Manual

Chapter 2 DSAM Operation
Using Measure Mode
The Help system offers additional instruction about these
tasks.
Performing
Upstream Spectrum Mode views and analyzes ingress
and distortion on the upstream (return) path. Initial
spectrum
measurements typically occur at the ground block with the
measurements
home disconnected from the network.
To access Upstream Spectrum Mode, use the arrow keys
to highlight the Upstream Spectrum option on the Measure
mode menu (Figure 15 on page 30), and press ENTER.
(Or, press the SHIFT key and the SPECTRUM softkey.)
The first Upstream Spectrum mode screen you see will
look similar to Figure 18.
Figure 18 Upstream Spectrum Mode Screen
To configure Upstream Spectrum Mode, select the
measurement limit option (or turn it off), and (if it is on) set
an appropriate pass/fail limit value for your installation.
Position the marker at each frequency to display the level
value.
DSAM Product Family Quick-Start Guide Rev. G 33