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6243/44 DC Voltage Current Source/Monitor Operation Manual

5.2.11 Program Examples

5-38

5.2.11.4 Program Example 4: Diode Measurement

Option Explicit ’ Explicit declaration for all variables

Private Sub Start_Click() ’ Event procedure for the command button (Start)

Dim board As Integer ’ GPIB board address

Dim pad As Integer ’ 6243/44 address

Dim vig As Integer ’ 6243/44 device descriptor

board = 0 ’ GPIB board address 0

pad = 1 ’ 6243/44 address 1

Call ibdev(board, pad, 0, T10s, 1, 1, vig) ’ Opening and initializing device (6243/44)

Call ibconfig(vig, IbcUnAddr, 1) ’ Address setting performed for each transmission or reception

Call ibeos(vig, &H40A) ’ Setting terminator to LF for sending command

Call SUBsend(vig, “C,*RST”) ’ DCL and parameter initialization

Call SUBsend(vig, “M1”) ’ Trigger mode hold

’ (1) Diode forward voltage measurement (VF)

Call SUBsend(vig, “MD1”) ’ Pulse generation mode

Call SUBsend(vig, “IF”) ’ Current source function

Call SUBsend(vig, “F1”) ’ Voltage measurement function

Call SUBsend(vig, “D100MA,D1.5V”) ’ Pulse current source value 100 mA, voltage limiter value 1.5 V

Call SUBsend(vig, “DB0A”) ’ Pulse base value 0 A

Call SUBsend(vig, “SP3,1,100,5”) ’ Hold time 3 ms, measure delay time 1 ms

’ Period 100 ms, pulse time 5 ms

Call SUBsend(vig, “IT1”) ’ Integration time 500 s

Call SUBsend(vig, “R0”) ’ Measurement auto range

Call SUBsend(vig, “E”) ’ Output ON

Call SUBmeas(vig) ’ Measurement trigger & data recall

Call SUBsend(vig, “H”) ’ Output OFF

’ (2) Diode reverse leak current measurement (IR)

Call SUBsend(vig, “MD0”) ’ DC source mode

Call SUBsend(vig, “VF”) ’ Voltage source function

Call SUBsend(vig, “F2”) ’ Current measurement function

Call SUBsend(vig, “D-20V,D300UA”) ’ DC voltage source value 20 V, current limiter value 300 A

Call SUBsend(vig, “SP3,100,100”) ’ Hold time 3 ms, measure delay time 100 ms

’ Period 100 ms

Call SUBsend(vig, “IT4”) ’ Integration time 10PLC

Call SUBsend(vig, “E”) ’ Output ON

Call SUBmeas(vig) ’ Measurement trigger & data read out

Call SUBsend(vig, “H”) ’ Output OFF

ADCMT 6243 User Manual

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