Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

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R&S
®
ZVA/ZVB/ZVT Optimization
1145.1084.12 9.5 E-4
To Set up a CW Mode Sweep...
1. Press the Sweep key in the Channel keypad or click Channel - Sweep to access the Sweep
submenu.
2. Click Sweep Type - CW Mode.
3. In the CW Mode entry bar opened, enter the fixed stimulus frequency (CW Frequency) and the
internal generator power (Source Power) for the sweep.
4. Click Channel - Stimulus to access the submenu defining the sweep range.
5. To vary the number of measurement points (implying a longer sweep time), use Stop.
If the active diagram is a Cartesian diagram, the x-axis is linearly scaled and labeled with the current
numbers of the trigger events (measurement points).
Optimization
Optimizing the Measurement Speed
Minimizing the measurement time per sweep contributes to a high measurement throughputs. The
following parameters have an influence on the sweep time:
To find the best set of sweep points...
Limit the measurement to the stimulus range that you need for your device:
1. Click Channel - Stimulus to access the submenu defining the sweep range.
2. To define a sweep range confined by a start and a stop frequency, use Start and Stop .
Alternatively, to define a sweep range of definite width around a known center frequency (e.g.
an expected peak), use
Center and Span . For power and time sweeps, proceed as described in
Setting up a Sweep.
3. Alternatively, use the marker functions to define the sweep range.
Use the minimum number of points that will produce an acceptable resolution:
1. Click Channel – Sweep – Number of Points and reduce the number of sweep points.
Use the segmented sweep to focus on different subranges of the sweep, using optimized channel
settings for each subrange:
1. Set up a segmented frequency sweep as described in Segmented Frequency.
2. Optimize the number of points and the noise reduction settings for each individual sweep
segment.
To obtain the fastest measurement sequence...
Avoid delay times between the different partial measurements:
1. Click Channel – Sweep – Sweep Time and check Auto .
The analyzer determines the minimum sweep time according to the current channel settings. The