Set Up an Embedded LO Measurement

This VBScript example creates a Noise Figure Converter measurement for a converter with an Embedded LO.

This VBScript (*.vbs) program can be run as a macro in the VNA. To do this, copy the following code into a text editor file such as Notepad and save it on the VNA hard drive as Noise.vbs. Learn how to setup and run the macro.

option explicit

dim app

dim chan

dim host

set app = CreateObject("Agilentpna835x.application")

app.reset

' create NFX traces

app.CreateCustomMeasurementEx 1, "Noise Figure Converters", "NF", 1

app.CreateCustomMeasurementEx 1, "Noise Figure Converters", "SC21", 1

'set channel and application objects

set chan = app.ActiveChannel

dim nfx

set nfx = chan.CustomChannelConfiguration

dim converter

set converter = chan.GetConverter()

dim calMgr

set calMgr = app.GetCalManager

dim nfxCal

set nfxCal = CalMgr.CreateCustomCalEx(1)

dim nfxCalExt

set nfxCalExt = nfxCal.CustomCalConfiguration

dim ELO

set ELO = converter.ConverterEmbeddedLO

' Set embedded LO properties

ELO.NormalizePoint = 101

ELO.TuningMode = 0 ' Broadband and precise

ELO. TuningIFBW = 3.0e4

ELO.MaxPreciseTuningIterations = 5

ELO.PreciseTuningTolerance = 1

ELO.TuningSweepInterval = 1

ELO.IsOn = true

'The following single sweep performs the same

'function as "Find Now" on the ELO dialog

chan.Single 1