Chapter 2 201
Front-Panel Key Reference
Sweep
NOTE The order of the segments may change when you enter center frequency 
or span because the sequence is based upon increasing start frequency. 
Refer to the “Displaying the Trace” section above, for clarification.
Zero span is available for any or all 
segments. It must be set by pressing 
Span, 0, Hz. For more information on 
this function, refer to “Zero Span” on 
page 186.
Key Access: 
Sweep, Segmented, Modify, 
Edit
Res BW
  Allows you to select the resolution 
bandwidth to a value between 1 kHz 
and 5 MHz for the current segment 
using the data control keys. For more 
information on this function, refer to 
“BW/Avg” on page 78. 
Key Access: 
Sweep, Segmented, Modify, 
Edit
Video BW
  Allows you to set the video bandwidth 
for the current segment to a value 
between 30 Hz and 3 MHz. For more 
information, refer to “Video BW Auto 
Man” on page 78.
Key Access: 
Sweep, Segmented, Modify, 
Edit
Points
  Allows you to set the number of  for the 
current segment. The minimum 
number of points in a zero span 
segment is 2; in a non-zero-span 
segment, 101. The maximum number of 
points in the total sweep is 8192. If you 
exceed the number of points available 
in one segment, the message: Too much 
data; total sweep points limited 
will be displayed in the status line 
(yellow on color displays). 
Key Access: 
Sweep, Segmented, Modify, 
Edit
Sweep Time
   Allows you to set the sweep time for the 
current zero span segment. For a 
non-zero span segment, the sweep time 
is auto-coupled to Span, Resolution 
Bandwidth, and Video Bandwidth and 
cannot be manually defined. The