Tektronix RSA6100A Series, Help Manual

Page: 162 / 415

RF Measurements > Occupied BW & x dB BW Occupied BW & x dB BW Display
Item Display element Description
1
Check mark indicator The check mark indicator denotes the display for which the acquisition
hardware is optimized. This indictor appears only when the display is the
selected display.
2 Averaging readout Appears when averaging is enabled (Settings > Parameters tab > Average
results). Displays "Avg: n of m" while averaging the results and "Avg: m"
once the requested number of results have been averaged.
3 Autoscale Adjusts the vertical and horizontal settings so that the entire trace fi ts in the
graph.
4 Trace function readout Displays either Normal or MaxHold to indicate trace function.
5
Clear Resets count for Average and MaxHold functions. Enabled only when
Averaging or MaxHold is enabled. Pressing Clear will clear the trace and, if
acquisition is running, restart the averaging or hold process.
6 Graph Displays the input signal. Shaded areas indicate the measurement bandwidth
(Settings > Parameters tab > Measurement BW).
7 Blue lines The blue lines indicate where the selected results (selected in the Main
results area) are being measured on the trace.
8
Grid divider Determines the portion of the display allocated to the graph and detailed
results area. You can move the grid divider all the way to the top or bottom
and any position in between.
9 Detailed results area Displays additional measurements results.
10 Position and dB/div Position sets the top of graph value. The dB/div setting is the vertical scale
value.
11 Main results area Displays results for Occupied Bandwidth (OBW) and x dB bandwidth. Use
the two radio buttons to select which of the two results are illustrated in the
graph with the blue lines and arrows. There are also controls for adjusting
OBW % Power, x dB BW, and RBW.
12 VBW
Enables the VBW (Video Bandwidth) fi lter. Displays current VBW fi lter setting.
See Setup > Settings > Freq & RBW tab (see page 143) .
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Detailed Results Readouts
Measurement Description
Freq Error The frequency difference between the measured carrier frequency of the signal and the
user-selected center frequency of the analyzer.
OBW Level left The signal level at the left edge of the occupied bandwidth.
OBW Level right The signal level at the right edge of the occupied bandwidth.
OBW Ref Power The total power measured within the measurement bandwidth.
x dB BW Ref Power The peak power measured within the measurement bandwidth.
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Changing the Occupied Bandwidth Settings (see page 151)
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RSA6100A Series Real-Time Spectrum Analyzers Help