Chapter 10 Measure Mode – Spectrum Tab
Ingress Resistance
DSAM Help User Guide Rev. 001 269
measured signal level for the frequencies which the markers are on.
The black square around the letter A or B below the graph displays the
active marker. The peak hold levels and the delta value (in dB)
between the peak hold levels are also displayed. If Peak Hold is
disabled, the live levels and the delta value (in dB) between the live
levels are displayed.
Viewing Ingress
Resistance
Results
To view Ingress Resistance results
1 Press the View softkey.
2 Highlight one of the following:
– Auto Reference (Shift, 9) to automatically view measurement
results in the best reference setting on the graph.
– 5 dB/div or 10 dB/div – Enables you to adjust the vertical
resolution of the graph for the best viewing.
– Peak Hold – Turns Peak Hold on and off. When Peak Hold is
turned on, it displays the highest level trace at each frequency
for an extended view of the noise isolation.
– Reset – Manually resets the Peak Hold function.
– Pause (Shift, 8) – Suspends measurement updates.
– Marker A – Sets Marker A as the active marker. (Use the left
and right arrow keys to move the marker.)
– Marker B – Sets Marker B as the active marker. (Use the left
and right arrow keys to move the marker.)
3 Press ENTER.
NOTE
For best reference setting results you may have to select the Auto
Reference button more than once (up to three times).
21128026 R001 DSAM Help User Guide.book Page 269 Thursday, February 5, 2009 2:02 PM
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