Tektronix AFG3000 Manual do Utilizador descarregar pdf (Página 207)

Programming Examples

AFG3000 Series Arbitrary/Function Generators Reference Manual 5-3

Example 2

This is a sample program for sending an arbitrary waveform to the arbitrary/func-

tion generator's Edit Memory and copying the contents of Edit Memory to the user

waveform memory.

Private Sub Sample2_Click()

'Assign resource

Tvc1.Descriptor = "GPIB0::11::INSTR"'

'Initialize of device setting

Tvc1.WriteString ("*RST")'

'Make arbitrary block data (2000 Points)

Dim wave(4000) As Byte

For i = 0 To 499 'Leading edge (500 Points)

Data = i * Int(16382 / 500) 'Data range is from 0 to 16382

High = Int(Data / 256) 'AFG's Data Format is big endian

Low = Data - (High * 256)

wave(2 * i) = High

wave(2 * i + 1) = Low

Next i

For i = 500 To 799 'Part of High Level (800 Points)

Data = 16382

High = Int(Data / 256)

Low = Data - (High * 256)

wave(2 * i) = High

wave(2 * i + 1) = Low

Next i

For i = 800 To 999 'Trailing Edge (200 Points)

Data = (1000 - i) * Int(16382 / 200)

High = Int(Data / 256)

Low = Data - (High * 256)

wave(2 * i) = High

wave(2 * i + 1) = Low

1 2 ... 202 203 204 205 206 207 208 209 210 211 212 ... 229 230

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