R&S ZVH
Cable and Antenna Test Mode
Performing Cable and Antenna Measurements
Operating Manual 1309.6946.12 - 09
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2.1.5 Selecting the Measurement Format
You can select several measurement formats for each measurement. The
measurement format selects the way the results are displayed
on the vertical axis
.
The R&S ZVH provides the following measurement formats in CAT mode.
● Magnitude (dB Mag)
This is the default format. It shows the magnitude of the results in dB.
●
V
SWR
The VSWR shows the standing wave ratio in a cartesian diagram. The VSWR is
the ratio of the maximum voltage and the minimum voltage that occur in an
electrical transmission line. The VSWR format is available for DTF and reflection
measurements.
● Reflection Coeffcient
Shows the reflection coefficient of the DUT.
The reflection coefficient is the ratio of the amplitude of a reflected wave and that
of the incidental wave that occur in an electrical transmission line.
● Cable Loss (Short + Open) / 2
This format is a refined method to calculate the cable loss.
When you select the format, the R&S ZVH asks you to calibrate the measurement
with a short and a open. This calculation method of cable loss results in a more
accurate display of the cable loss curve and helps to avoid measurement errors.
For more information on the cable loss measurement see
The following pictures show the results of a reflection measurement in Magnitude
format (left side) and VSWR format (right side).
