Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

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Optimization R&S
®
ZVA/ZVB/ZVT
1145.1084.12 9.6 E-4
sweep is performed at maximum speed without delay.
Avoid delay times between the end of the measurement sequence and the next trigger event:
2. If you don't need a special trigger mode, click Channel – Sweep – Trigger and make sure that
Free Run is selected .
Avoid delay times between adjacent frequency points.
3. Click Channel – Mode and select Alternating Sweeps if the settling time between adjacent
frequency points is larger than the settling time between the partial measurements.
To find the appropriate noise reduction settings...
Use the fastest IF filter that will produce acceptable dynamic range:
1. Press the POWER BW AVG key in the Channel block or click Channel – Power Bandwidth
Average to access the corresponding submenu.
2. Select the widest bandwidth compatible with your measurement task .
3. If possible, click Fine Adjust to further increase the bandwidth. Avoid selecting High Selectivity
unless it is required for your measurement.
Reduce the number of repeated measurements made to obtain an averaged result. Averaging does not
slow down the measurement, however, several consecutive sweeps must be performed until an
average result is available.
1. If averaging is not necessary, open the Channel – Power Bandwidth Average menu and make
sure that Average On is not active.
2. Alternatively, click Average Factor and reduce the factor to a minimum.
Calibrating a Measurement Channel
Calibration is the process of eliminating systematic, reproducible errors from the measurement results
(system error correction). A measurement channel can be calibrated either manually or automatically
using the Calibration Unit (option R&S ZV-Z51):
To select and perform a manual calibration...
In the following example a 2-port TOSM calibration is performed manually using the Calibration Wizard.
Other calibrations can be performed in an analogous way.
1. Perform all channel settings for your measurement.
2. Click Channel – Calibration – Start Cal – Two Port P1 P2 – Manual... to open the calibration
wizard for the desired calibration type.
3. In the Select Physical Port Connector(s) dialog, select the connector type that you use at port 1
and 2 (both connector types must be equal) and the calibration kit. Click Next > to access the
Measure Standards dialog .
4. Connect an open standard to port 1 and click the corresponding box in the Measured
Standards list to initiate the calibration sweep and acquire the calibration data for this standard.
5. Repeat the last step for a short and a match connected to port 1, an open, short and match
connected to port 2, and for a through between both ports.
6. Click Apply to start the calculation of the system error correction data, apply them to the current