SNA5000A Vector Network Analyzer User Manual 62
TRL Tab
Allows you to assign single or multiple standards to Calibration Classes.
1) For each Cal Kit Class, select Available Standards from the left list, then click >> to copy
the standard to the Cal Kit.
2) Use Move Up and Move Down to change the ORDER of the standards.
Figure 3-11 TRL dialog box
A.
TRL THRU
All THRU calibration methods are supported in a TRL Cal EXCEPT Unknown Thru.
•
The THRU standard can be either a zero-length or non-zero length. However, a zero-
length THRU is more accurate because it has zero loss and no reflections, by definition.
•
The THRU standard cannot be the same electrical length as the LINE standard.
•
If the insertion phase and electrical length are well-defined, the THRU standard may be
used to set the reference plane.
•
The THRU standard and LINE standard have the same characteristic impedance and are
perfectly matched. They define the reference impedance of the calibration.
•
If a THRU standard with the correct connectors is NOT available, an adapter removal cal
can be performed.
B.
TRL REFLECT
•
The REFLECT standard can be anything with a high reflection, as long as it is the same
when connected to one or more VNA ports.
•
The REFLECT standard on each port is identical.
•
The actual magnitude of the reflection need not be known.
•
The phase of the reflection standard must be known within 1/4 wavelength.
•
If the magnitude and phase of the reflection standard are well-defined, the standard may
be used to set the reference plane
Summary of Contents for SNA5000A Series
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