VNA Master™Programming Manual : VNA Commands : [:SENSe]:CALibration Subsystem
 
[:SENSe]:CALibration Subsystem
This subsystem controls the system calibration.
 
Calibration State
[:SENSe]:CALibration:STATe?
Description
Reports the calibrated state. This command returns a 0 if there is no valid calibration, otherwise it returns the bit of the S parameters that has a valid calibration. The bits are as follows:
S11 bit
0x01
S21 bit
0x04
For example, if a value of 5 is returned, then both of the S parameter bits are valid (since decimal 5 is equivalent to binary 0101).
Syntax
[:SENSe]:CALibration:STATe?
Cmd Parameter
NA (query only)
Query Response
<NR1> <integer> (0 to 5)
Front Panel Access
NA
 
[:SENSe]:CORRection Subsystem
This subsystem provides commands for losses or gains external to the instrument.
[:SENSe]:CORRection Subsystem 
Keyword
Parameter Data or Units
[:SENSe]
 
:CORRection
 
:CKIT
:COLLect
 
Error Correction Data
[:SENSe]:CORRection:DATA?
Title
Error Correction Data
Description
Transfers the system error correction data from the instrument to the controller. <error term parameter> are string parameters that describe the different error terms.
<error term parameter>
Descriptions
ERF
(Forward) Reflection tracking
EDF
(Forward) Directivity
ESF
(Forward) Source match
ETF
(Forward) Transmission tracking
ELF
(Forward) Load match
EXF
(Forward) Isolation
ETFS
(Forward Sensitivity) Transmission tracking
ELFS
(Forward Sensitivity) Load match
EXFS
(Forward Sensitivity) Isolation
The format of the block data that is returned can be specified by the command :FORMat:DATA. The response begins with an ASCII header that specifies the number of data bytes. It appears in the format #AX, where A is the number of digits in X, and X is the number of bytes that follow the header. Each data point is separated by a comma delimiter. Each term contains one complex value (real and imaginary) for each sweep point.
Syntax
[:SENSe]:CORRection:DATA? <error terms parameters>
Cmd Parameter
NA (query only)
Query Parameter
<char> <error terms parameters>
Query Response
<char> (returns block data)
Related Command
:FORMat:DATA
Front Panel Access
NA
Smith Chart Reference Impedance
[:SENSe]:CORRection:IMPedance[:INPut][:MAGNitude]:SMCHart
Description
Sets the Smith Chart reference impedance. Sets 50 for 50 ohm. Sets 75 for 75 ohm. The query form of the command returns the current Smith Chart reference impedance in ohms.
Syntax
[:SENSe]:CORRection:IMPedance[:INPut][:MAGNitude]
:SMCHart 50|75
[:SENSe]:CORRection:IMPedance[:INPut][:MAGNitude]
:SMCHart?
Cmd Parameter
<char> 50|75
Query Response
<char> 50|75
Default Value
50
Range
50, 75
Front Panel Access
Scale, Reference Impedance
 
Calibration Correction State
[:SENSe]:CORRection[:STATe]
Description
Turns the calibration error correction ON or OFF. Note that error correction can be turned ON only if valid calibration is available.
Syntax
[:SENSe]:CORRection[:STATe] OFF|ON
[:SENSe]:CORRection[:STATe]?
Parameter
OFF|ON
Cmd Parameter
<boolean> OFF|ON|0|1
Query Response
<bNR1> 0|1
Default Value
0
Front Panel Access
Shift‑2 (Calibrate), Cal Correction