Operating Manual EMI TEST RECEIVER ESIB7 - Rohde & Schwarz

Programming Examples
ESIB
Programming via the RSIB Interface
The following hints apply to both the 16-bit and the 32-bit DLL versions (RSIB.DLL and RSIB32.DLL)
unless an explicit distinction is made.. The RSIB interface supports links to max. 16 measuring
instruments at the same time.
Visual Basic
Programming Hints:
• Access to RSIB.DLL functions
To generate Visual Basic control applications, the file RSIB.BAS for 16 bit basic programs or
RSIB32.BAS for 32 bit basic programs (C:/R_S/INSTR/RSIB) s added to a project to enable call-up
of the RSIB.DLL or RSIB32.DLL functions.
• Generating a response buffer
Prior to calling the functions RSDLLibrd() and RSDLLilrd(), a string of sufficient length must
be generated. This is possible either by defining the string or using the command Space$().
Generating a string of the length 100: - Dim Response as String * 100
- Dim Response as String
Response = Space$(100)
If a response is to be output as a string from the measuring instrument, the appended blanks can be
removed using the Visual Basic Function RTrim().
Example:
Response = Space$(100)
Call RSDLLibrd(ud, Response, ibsta, iberr, ibcntl)
Response = RTrim(Response)
’ Output of Response
• Reading trace data in real format
Using the function declarations in the file RSIB.BAS or RSIB32.BAS the responses of the device can
be assigned to one string only. If the data are to be read into an array with float values, the header
and the useful data must be read out with separate function calls.
Example of a header
# 4 2004
Prefix for
binary data
Number of digits of
the following length
indication
Length of data, e.g.
501 pixels
4 bytes/pixel
In order to enable the trace data to be directly read into a float array, a special function declaration
must be created.
Declare Function RSDLLilrdTraceReal Lib "rsib32.dll" Alias "RSDLLilrd"
(ByVal ud%, Rd As Single, ByVal Cnt&, ibsta%, iberr%, ibcntl&) As Integer
1088.7531.12 7.6 E-16