Chapter 8
Measure Mode – Basic Tab
Tilt
168
DSAM Help User Guide
Rev. 001
–
1 dB/div, 2 dB/div, 5 dB/div
or
10 dB/div
– Enables you to
adjust the vertical resolution of the graph for the best viewing.
–
Graph
(default)/
Table
–Displays the measurements in graph
or table form. Measurements are continually updated in these
views for a Full Scan.
–
Single Channel
– Displays the measurements one channel at
a time. First, use the arrow keys to move the marker to the
preferred channel then select this option from the View menu.
–
MiniScan
– Displays the MiniScan screen.
–
Tilt
– Displays the Tilt screen.
–
Pause (Shift, 8)
– Suspends measurement updates.
–
Zoom 1x, Zoom 2x, Zoom 4x
– Magnifies the display to
display increasing detail centered on the marker (active
channel).
3
Press
ENTER
.
Tilt
Tilt is transmission loss in a coaxial cable. Transmission loss
increases in proportion to the square root of frequency, thus affecting
the tilt. As displayed by the DSAM, Tilt measurement displays levels
across a band of channels. Tilt is displayed as the slope between
lowest to highest channel. Levels for each intermediate channel
should reach the line.
A marker provides channel number, channel type, and channel label
in the sub title area.
Tilt measurements appear in order of frequency, with start and stop
channels indicated on the horizontal axis at the bottom of the graph.
Results are continually updated. Channel assignments are designated
by the currently channel plan.
You can save results for later reference.
Measuring Tilt
To measure Tilt signals
NOTE
For best reference setting results you may need to press the Auto
Reference button up to three times.
21128026 R001 DSAM Help User Guide.book Page 168 Thursday, February 5, 2009 2:02 PM
