E7000L SitePROFILER
Handheld Cable/Antenna Analyzer
74
Chapter 16 — Markers and Limit Lines
Introduction
When you have successfully completed a measurement and wish to analyze the results, several options are
open to you. Activating markers or marker functions will provide you with a readout of the RF measurement
at a specific point, giving you the amplitude reading at a given frequency. Setting limit lines enables a
quick “pass/fail” analysis of the reflection performance.
16-1
Setting a Marker
A marker is a tool for extracting results from traces (or from trace memory). Among other functions, markers
can be used to measure the amplitude of a spike on a cable analyzer measurement, or to indicate certain
places on the sweep. Using markers and delta markers, you can make many measurements that deal with
the change in power with frequency or time.
To set one or more independent markers on the measurement display, tap the
Marker
main menu softkey.
Ensure that the Marker submenu is open and follow the steps below.
In the menu on the right-hand side of the screen, you can toggle Marker 1 and Marker 2 On/Off. Whichever
marker you last selected will be the
active marker
, indicated by a small green square ( ) next to its name
in the Marker menu. The active marker can be freely moved along the measurement trace with the arrow
keys or rotary knob. You may also use the data keypad to enter a numerical position in distance units; enter
the value, then tap the desired unit (km, m, cm, or mm) in the submenu that appears to the right.
NOTE: Although multiple markers (up to eight) can be turned on, only one can be the current active
marker (meaning that this marker can be moved, the mode changed, etc). All other markers,
although on, are frozen in the spot they were placed at the time they were activated.
A
Delta
marker is associated with a Normal marker. A Normal marker must be set before a Delta marker is
set. When the Delta marker is set, the position set by the Delta marker becomes the reference position of
the Normal marker, and the marker’s X and Y values display the difference compared with the Delta
marker. The reference position will be fixed.
Tap
Marker Table
to toggle it On/Off; this setting displays a list of currently placed markers and their
positions underneath the measurement display. Select
Large Display
to show only the active marker’s
location in larger type.
Tap
All Markers OFF
to disable all placed markers. Markers turned off and back on will retain their position.
Open the More Markers submenu to set additional markers. You can set up to eight markers at a time.
Using Marker Auto Search
In the Marker main menu, tap
Search
to open the Search submenu. These functions can be used to auto-
matically guide the active marker to the highest or lowest point of the measurement (
Marker to MAX/MIN),
to
particular peaks and valleys (
Marker to Peak/Valley
), or to fault points (
Auto Search Fault Point
).
