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ZVT GUI Reference
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Operating Manual 1145.1084.12 – 30 475
Short, contained in the calibration kit
Direct through connection of the two waveguide flanges
Through connection of the two waveguide flanges with Shim in-between.
In view of the bandwidth of the frequency converters, line 2 is not needed.
Not contained in the calibration kit
Not contained in the calibration kit
The standards in the calibration kit allow all one-port and two-port calibration types supported by the
network analyzer except TNA.
The characteristic data of the standards are very stable and independent of the individual calibration kit. It
is not required to deliver individual data with each kit and load the data into the analyzer. Instead the data
is already stored in the network analyzer (software option R&S ZVA-K8 and a sufficiently new firmware
version is required; refer to the What's New... section). It is possible to export the stored data to a file. Use
the "Cal-Kits" dialog of the network analyzer for this purpose: "Channel" > "Calibration" > "Cal-Kits" >
"Export Kit ..."
Sliding Match Standard
The sliding match is a one-port standard consisting of a precision waveguide section with a movable, low-
reflection load element (sliding load). This standard is used because no perfect match is available.
However, a series of measurements at a given frequency with equal mismatch and varying phase yields
reflection factors that are located on a circle in the Smith chart. The center of this circle corresponds to
perfect match. The network analyzer determines and further corrects this match point following I. Kása's
circle-fitting algorithm.
To obtain the reflection coefficient for a perfectly matched calibration standard, the sliding load must be
measured at least at three positions which should be unequally spaced to avoid overlapping data points.
Increasing the number of positions to 4 – 6 can improve the accuracy. It is recommended to use the
positions listed below. Depending on your calibration kit, set the adjustable screw of the standard to the
following positions:
R&S ZV-WR10: 0 mm, 0.35 mm, 0.8 mm, 1.4 mm, 2.1 mm, 4.2 mm
R&S ZV-WR12: 0 mm, 0.42 mm, 0.96 mm, 1.68 mm, 2.52 mm, 5.04 mm
R&S ZV-WR15: 0 mm, 0.52 mm, 1.2 mm, 2.1 mm, 3.15 mm, 6.3 mm
If you accidentally unscrew the knob completely, simply screw it on again.
Calibration Kit R&S ZV-WR12
The calibration kit R&S ZV-WR12 contains the same standard types as the calibration kit R&S ZV-WR10,
however, the standards are optimized for the frequency range of the R&S ZVA-Z90E frequency converter
(60 to 90 GHz). The calibration procedure for both kits is identical.
Calibration Kit R&S ZV-WR15
The calibration kit R&S ZV-WR15 contains the same standard types as the calibration kit R&S ZV-WR10,
however, the standards are optimized for the frequency range of the R&S ZVA-Z75 frequency converter
(50 to 75 GHz). The calibration procedure for both kits is identical.
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