115 SNA5000A Vector Network Analyzer User Manual
Figure 4-11 Time domain setting interface
Transform switch:
Check the transform switch to switch to time-domain mode.
Start time
: Set the start time of transformation displayed.
Stop time
: Set the stop time of transformation displayed.
Center time:
Set the center time of transformation displayed.
Time span:
Set the time span of the transformation displayed on the screen of VNA.
Transform mode
:
⚫
Low pass impulse: High resolution, suitable for viewing the small response of the
device propagating low-frequency signal. In this low pass impulse
mode, the frequency expands to DC and negative frequency.
Therefore, when we click
Set Low Pass Frequencies
, the starting
frequency will be automatically adjusted, which will affect the
calibration accuracy. Therefore, it is necessary to calibrate after
setting the time domain measurement parameters.
⚫
Low pass step: The simplest way to determine the discontinuities caused by
inductors and capacitors in equipment that propagate low
frequency signals.
⚫
Bandpass: The simplest method, which can be used with any frequency sweep,
it is most useful when measuring devices with limited bandwidth.
Capacitance and inductance reactance will not be shown. For the same
frequency range and number of points, the bandwidth of bandpass mode is
twice that of impulse mode, which will hide the closely spaced response and
reduce the response resolution. The measurement range is inversely
proportional to the frequency step.
Set low pass frequencies:
It can only be used in low pass mode. After clicking
Set Low
Pass Frequencies
, the measurement range is inversely
Summary of Contents for SNA5000A Series
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