Agilent Technologies B1500A Instrukcja Obsługi Pobierz pdf (Strona 36)

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1-18 Agilent B1500A/B1505A Programming Guide, Edition 11

Programming Basics

Getting Started

To Read Error Code/Message

If any error occurs, the B1500 will not put the measurement data into the data output

buffer. Hence, confirm that no error has occurred before reading the measurement

data. To read the error code and the error message, enter the ERRX? command.

Example OUTPUT @B1500;"ERRX?"

ENTER @B1500;Code,Msg$

IF Code<>0 THEN

PRINT "ERROR: ";Msg$

ELSE

This example checks the error buffer, and prints the error message on the computer

screen if any error code is stored in the error buffer.

ERR? and EMG? commands are also available. These commands support the error

codes 0 to 999.

To Read Spot Measurement Data

After the spot measurements, the B1500 puts the measurement data into its output

data buffer. You can read the data as shown below. The examples read the header

information and the measurement data included in the ASCII data set by the FMT5

command. For the data output format, see “Data Output Format” on page 1-25. The

example uses the HP BASIC or Microsoft Visual Basic .NET language.

Example 1 For the HP BASIC users, use the ENTER statement.

ENTER @B1500 USING "#,3A,12D,X";Head$,Mdata

Example 2 For the VISA library users, use the viScanf, viRead, or another function.

Dim ret_rd As System.Text.StringBuilder = _

New System.Text.StringBuilder(3 + 12 + 1)

ret = viScanf(vi, "%t", ret_rd)

ret_val = ret_rd.ToString()

head = Left(ret_val, 3)

mdata = Val(Mid(ret_val, 4, 12))

Example 3 For the VISA COM library users, use the ReadString or another method.

ret_val = B1500.ReadString(3 + 12 + 1)

head = Left(ret_val, 3)

mdata = Val(Mid(ret_val, 4, 12))

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 597 598

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