Option Explicit

Dim pna

Set pna = CreateObject("AgilentPNA835x.Application")

Dim calMgr

Set calMgr = pna.GetCalManager

' Get ECal User Characterizer COM object

Dim ecalCharacterizer

Set ecalCharacterizer = calMgr.GetECalUserCharacterizer

' Substitute here the model number and serial number of your own ECal.

' Note that this example corresponds to a 4-port ECal module with

' serial number 00001.  If instead you have a 2-port ECal module,

' their model numbers are '5x5' numbers -- for example, 'N4691-60001'.

Dim ecalModelNum

ecalModelNum = "N4433A"

Dim ecalSerialNum

ecalSerialNum = "00001"

ecalCharacterizer.ECalID = ecalModelNum & "," & ecalSerialNum

MsgBox "ECal module to be characterized is: " & ecalCharacterizer.ECalID

' Set which user characterization number (1-12) the new characterization

' will be stored to in the ECal module when it is done.  If you intend to

' store your user characterization just to VNA Disk Memory and NOT the

' ECal module's memory, then omit the setting of this property.

ecalCharacterizer.CharacterizationNumber = 1

' The following commented-out lines of code show how you can access

' the list of connector type names you can set for the ports of an

' ECal when you user-characterize it.  However, please note that if

' you are writing the user characterization to the ECal module's memory,

' as of yet only the Factory Defined set of connector choices will work

' properly (see the ValidConnectorType property).

' If you will be saving your characterization to just

' VNA Disk Memory only, then all connector names returned by this call

' will work, user-defined connector names as well as factory-defined.

'Dim connTypeArray

'connTypeArray = ecalCharacterizer.ValidConnectorTypes

'MsgBox connTypeArray(1)

' Access element 1 in the string array

' For each port of the ECal module, specify which connector type

' is at the end of the adapter (or cable or fixture) that is

' connected to that port of the ECal for the characterization

' (must be one of the connector types that is included in the

' list that the ValidConnectorTypes method returns).  The default

' is "No adapter", which assumes you are characterizing that port

' of the ECal "as is" (nothing attached to it).  So in this example,

' Ports C and D of the ECal are being characterized to just the

' ECal's connectors.

ecalCharacterizer.ConnectorType(1) = "APC 3.5 male" ' ECal Port A

ecalCharacterizer.ConnectorType(2) = "APC 3.5 male" ' ECal Port B

' As with the connector types, the information set in these next

' few properties also gets stored within the characterization.

' Set the name of the person and/or company that is producing

' this characterization.

ecalCharacterizer.UserName = "John Doe, Acme Inc."

' Set user-specified description of the VNA being used.

ecalCharacterizer.UserDescriptionOfPNA = "SN US12345678"

' Set descriptions of what you have connected to the ECal module's

' ports for the characterization.

ecalCharacterizer.PortDescription(1) = "3.5 mm adapter, SN 00001" ' Port A of the ECal

ecalCharacterizer.PortDescription(2) = "3.5 mm adapter, SN 00002" ' Port B of the ECal

' Begin a user characterization on Channel 1.

' If you will be storing this characterization to the ECal module's memory, then

' the boolean argument to this command should be set to True.  If you will be storing

' this characterization to VNA disk memory ONLY, then you should specify False for

' that argument.  In this example we will be storing the characterization to both

' module memory and VNA disk memory, so we use True.

ecalCharacterizer.InitializeEx 1, True

' Generate the measurement steps for the user characterization.

Dim numSteps

numSteps = ecalCharacterizer.GenerateSteps

' Measure the steps.

' You must ensure you have already applied the appropriate calibration to the channel

' already, or else an error will be thrown indicating that.

Dim i

For i = 1 To numSteps

   MsgBox ecalCharacterizer.GetStepDescription(i)

   ecalCharacterizer.AcquireStep(i)

   MsgBox "Acquire is complete"

Next

MsgBox "Now the user characterization will be saved to the ECal module and to PNA disk memory"

' Save the user characterization to the ECal module's memory.

' Note that this can take multiple minutes, depending on how

' many sweep points the channel has.

ecalCharacterizer.SaveToECal

' Save the user characterization to VNA Disk Memory.

Dim characterizationName

characterizationName = "test"

ecalCharacterizer.SaveToDiskMemory(characterizationName)

MsgBox "User characterization is complete.  Now we will calibrate using it.  First we will use it from ECal module memory."

Dim moduleMemCalKitName

moduleMemCalKitName = GetCalKitName("User " & CStr(ecalCharacterizer.CharacterizationNumber))

DoTwoPortCal moduleMemCalKitName

MsgBox "Now we will calibrate using the characterization from PNA Disk Memory."

Dim pnaDiskMemCalKitName

pnaDiskMemCalKitName = GetCalKitName(characterizationName)

DoTwoPortCal pnaDiskMemCalKitName

MsgBox "Example has completed"

Function GetCalKitName(characterizationName)

Dim calKitName

calKitName = ecalModelNum

If Len(characterizationName) > 0 Then calKitName = calKitName & " " & characterizationName

calKitName = calKitName & " ECal " & ecalSerialNum

GetCalKitName = calKitName

End Function

Sub DoTwoPortCal(calKitName)

' Initialize guided cal to be performed on Channel 1.

Dim guidedCal

Set guidedCal = calMgr.GuidedCalibration

guidedCal.Initialize 1, True

' Specify the DUT connector for each VNA port to be calibrated (DUT connector = ECal characterization's connector)

guidedCal.ConnectorType(1) = "APC 3.5 male"

guidedCal.ConnectorType(2) = "APC 3.5 male"

' Specify the "cal kit" for each of those ports

guidedCal.CalKitType(1) = calKitName

guidedCal.CalKitType(2) = calKitName

' We know this example will result in a calibration sequence of a single "connection step"

Dim numSteps

numSteps = guidedCal.GenerateSteps

' Acquire the cal connection step

guidedCal.AcquireStep 1

' Conclude the cal and turn it on

guidedCal.GenerateErrorTerms

End Sub