101 SNA5000A Vector Network Analyzer User Manual
perform four kinds of mathematical operations on the current data-trace and memory trace. In
addition, it can calculate and display statistical data (mean, standard deviation, and peak-peak)
on the data-trace. In addition, through the built-in formula editor, you can use multiple types of
traces from the same or different channels to build custom formulas. When the mathematical
operation with memory trace needs to be carried out, the current data needs to be stored in
memory first. Click
Data→Memory
to complete the storage operation. In the
Display
menu
bar, you can select three display modes: Display data-trace only, display memory trace and
display data-trace and memory trace at the same time. The four mathematical operations of
data-trace and memory trace are as follows, in which the values on data-trace and memory
trace are linear:
⚫
Data/Memory: Divide the measured data by the data in the stored trace. This
function can be used to calculate the ratio of two traces (such as
calculating gain or attenuation), which can also be regarded as the
normalization operation of test data.
⚫
Data*Memory: The current measurement data is multiplied by the data in
memory.
⚫
Data+Memory: Current measurement data plus data in memory.
⚫
Data–Memory: Current measurement data minus data in memory. For example,
you can use this function to store measured data, The error is then
subtracted from the DUT measurement.
4.3 Conversion
The vector network analyzer supports parameter conversion, which can convert the S
parameter of the current trace to the required parameter mode. The vector network analyzer
supports the following 8 conversion types.
⚫
Z-Reflect: Impedance in reflection measurement Z
r
.
Z
𝑟
= 𝑍
𝑜𝑎
×
1 + 𝑆
𝑎𝑎
1 − 𝑆
𝑎𝑎
⚫
Z-Transmit: Impedance in transmission measurement Z
t
.
𝑍
𝑡
=
2 × √𝑍
0𝑎
× 𝑍
0𝑏
𝑆
𝑎𝑏
− (𝑍
0𝑎
+ 𝑍
0𝑏
)
⚫
Z-Trans-Shunt: Impedance in parallel transmission Z
t
.
𝑍
𝑡
=
1
𝑌
𝑡
⚫
Y-Reflect: Reflection measurement admittance Y
r
.
𝑌
𝑟
=
1
𝑍
𝑟
⚫
Y -Transmit: Admittance in transmission measurement Y
t
.
𝑌
𝑡
=
1
𝑍
𝑡
⚫
Y -Trans-Shunt: Admittance in parallel transmission Y
t
.
𝑌
01
=
1
𝑍
01
Summary of Contents for SNA5000A Series
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