Setup FastCW and FIFO

This example program does the following:

Setup an A/R and B/R measurement
Turn ON point averaging
Set external edge triggering (commented out)
Set FIFO and Fast CW
Write data into FIFO data buffer
Read FIFO data buffer

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

See the FIFO object.

See Other COM Example Programs

dim app

set app = createobject("Agilentpna835x.application")

' Setup and measure A/R and B/R

app.Reset

app.CreateMeasurement 1,"A/R1",0

app.CreateMeasurement 1,"B/R1",0

' Set IFBW to 600khz (400thousand pts/second)

app.activeChannel.IFBandwidth = 600e3

' Point Averaging Count = 10

app.activeChannel.AverageMode = 0 ' point

app.activeChannel.averagingFactor = 10

app.ActiveChannel.averaging = 1 ' turn on

' Edge triggering - positive edge

'app.TriggerSetup.ExternalTriggerConnectionBehavior(1) = 2 ' BNC1 = trigger positive edge

'app.TriggerSetup.Source = 2 ' external

'app.ActiveChannel.TriggerMode = 0 'point

' Setup FIFO and Fast CW count

app.ActiveChannel.Hold 1 ' hold - synchronous

app.FIFO.State = 1' turn on FIFO

app.FIFO.Clear

app.activechannel.sweeptype = 3 ' CW sweep

app.activechannel.fastcwpointcount = 1000000' set the point count to 1million

app.activechannel.single 1 ' synchronous single

' the single will wait until the end of sweep.

'You do not have to wait until end of sweep to start emptying FIFO.

points = app.fifo.datacount

msgbox points

' points == 2000000 ' points = 2million. Took 5 seconds to acquire

For I = 0 to 1 ' 2 iterations (2 parameters * 2 sets of 1 million)

Dim data

Data = app.fifo.data(1000000)

msgbox data(0)