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Optimizing Measurement Results
Increasing Sweep Speed
Increasing Sweep Speed
You can increase the analyzer sweep speed by avoiding the use of some features that require computational
time for implementation and updating, such as bandwidth marker tracking.
You can also increase the sweep speed by making adjustments to the measurement settings. The following
suggestions for increasing sweep speed are general rules that you should experiment with:
• use swept list mode
• decrease the frequency span
• set the auto sweep time mode
• widen the system bandwidth
• reduce the averaging factor
• reduce the number of measurement points
• set the sweep type
• use chop sweep mode
• use external calibration
• use fast 2-port calibration mode
To Use Swept List Mode
When using a list frequency sweep, choosing swept list mode can increase throughput by up to 6 times over
stepped list mode. This mode takes data while sweeping through each list segment. In addition, this mode
expands the list table to include test port power and IF bandwidth. Selectable IF bandwidths can increase
the throughput of the measurement by allowing the user to specify narrow bandwidths only where needed.
• For in-depth information on swept list mode, refer to "Swept List Frequency Sweep (Hz)" on page 7-18.
• For more information on making measurements with swept list mode, refer to "Using the Swept List
Mode to Test a Device" on page 1-69.
1. To set up a swept list measurement, press
.
2. The frequency segments can be defined in any of the following terms:
• start/stop/number of points/power/IFBW
• start/stop/step/power/IFBW
• center/span/number of points/power/IFBW
• center/span/step/power/IFBW
3. When finished, press .
Sweep Speed-Related Errors
IF delay occurs during swept measurements when the signal from the analyzer source is delayed in reaching
the analyzer receiver because of an electrically long device. The receiver has a narrow IF band pass filter
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