Chapter 11 Measure Mode – Sweep Tab
Forward Sweep
DSAM Help User Guide Rev. 001 277
markers are on. The black square around the letter A or B indicates
the active marker. The delta label (in dB) and the delta frequency (in
MHz) between the markers is also displayed. The sweep maximum-
minimum dB level (difference between the highest and lowest points
in the sweep graph) is displayed next to the marker status.
Toggling Between
Forward and
Reverse Sweep
To toggle between Forward Sweep and Reverse Sweep
1 To sweep in the opposite direction, press the Rev Swp softkey.
(See “Running a Reverse Sweep” on page 280 for more informa-
tion.)
Viewing Forward
Sweep Results
To view Forward Sweep results in different ways
1 Press the View softkey.
2 Using the arrow keys, select one of the following:
– Auto Reference (Shift, 9) – Enables you to automatically view
measurement results in the best reference setting on the
graph.
– 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.
– Zoom – Turns graph magnification on and off. The Zoom
feature produces a display that has a frequency span defined
by the position of the markers in the original non-zoomed view.
– Pause (Shift, 8) – Suspends measurement updates.
3 Press ENTER.
NOTE
If you are testing on directional test points in the system, you must
have both ports 1 and 2 on the DSAM connected to the test points
to toggle between the Forward Sweep and Reverse Sweep.
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 277 Thursday, February 5, 2009 2:02 PM
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