RFmxVNA Calset Get Frequency Grid (VI)

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Updated2024-04-10
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Owning Palette: Calset

Returns the calibration frequency grid from the Calset.

You cannot specify both signal name in Selector String and Calset Name together.

If you do not specify both signal name in Selector String and Calset Name, the frequency grid will be returned from in memory calset of default signal instance. If you do not specify Calset Name but specify signal name in Selector String, the frequency grid will be returned from in memory calset of the specified signal instance. If you specify only Calset Name, the frequency grid will returned from the global calset with the specified calset name.

Note You can call this VI only after you call the RFmxVNA Calibration Save VI.

RFmxVNA Calset Get Frequency Grid

Instrument Handle In specifies the RFmx session refnum.

Selector String specifies a selector string comprising of the signal name. If you do not specify the signal name, the default signal instance is used. The default value is "" (empty string).

Example:

"signal::mysignal1"

You can use the RFmxVNA Build Signal String VI to build the selector string.

Instrument Handle Out passes a reference of your RFmx session to the next VI.

Calset Name specifies the name of the calset.

Error Term Identifier specifies the type of error term in the calset.

The error term can take the following values:

Directivity (0)	Directivity measured at Measurement Port (Source Port ignored).
Source Match (1)	Source Match measured at Measurement Port (Source Port ignored).
Reflection Tracking (2)	Reflection Tracking measured at Measurement Port (Source Port ignored).
Transmission Tracking (3)	Transmission Tracking measured at Measurement Port with Source Port being the source port.
Load Match (4)	Load Match measured at Measurement Port with Source Port being the source port.
K (5)	K measured at Measurement Port (Source Port ignored).
alpha (6)	alpha measured at Measurement Port (Source Port ignored).
beta (7)	beta measured at Measurement Port (Source Port ignored).
gamma (8)	gamma measured at Measurement Port (Source Port ignored).
delta (9)	delta measured at Measurement Port (Source Port ignored).
Switch Term (10)	Switch term measured at Measurement Port (Source Port ignored).

The error term K, alpha, beta, gamma, and delta describe the relation of the outgoing and incident waves at the calibration plane (waves a and b) and the waves measured at VNA reference and measurement receiver (waves r and s) by the following matrix equation:

+ + + ++ +
¦ a ¦ ¦ alpha beta ¦¦ r ¦
¦ ¦ = K * ¦ ¦¦ ¦
¦ b ¦ ¦ gamma delta ¦¦ s ¦
+ + + ++ +

, where alpha, beta, gamma, and delta represent the complex elements of a transmission matrix and K represents a complex scaling factor.

Frequency Grid (Hz) returns the calibration frequency grid from the calset. This value is expressed in Hz.

error in describes error conditions that occur before this node runs.

error out returns error information.

RFmx VNA VIs

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RFmxVNA Calset Get Frequency Grid (VI)

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