R&S
®
ZVA / R&S
®
ZVB / R&S
®
ZVT Measurement Examples
Calibration
Operating Manual 1145.1084.12 – 30 72
The analyzer determines the minimum sweep time according to the current channel settings. The 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 keypad 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.
Additional Hints (R&S ZVA67)
On R&S ZVA67 instruments, the alternating sweep mode speeds up all measurements which require
several partial measurements. Select Channel – Mode – Alternating Sweeps to obtain the fastest
measurement. See also section Alternating Sweeps.
Calibration
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 a suitable calibration unit (accessories R&S ZV-Z51 ... -Z59 or R&S ZN-Z51/-Z151):
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.
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