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Chapter 9
Measurement Applications (Sample Programs)
Detecting the Completion of Measurement using SRQ
Detecting the Completion of Measurement using SRQ
This application program detects the end of measurement with the status byte after the
triggered.E4981A is triggered
The program of
is described in detail below. Each explanation below is
inserted as a comment line in the program. For details on the VISA functions, refer to the
I/O Library Suite manual.
Configuration
Define Variables and initialize the program.
Open Instrument Assigns a USB address or GPIB address to the I/O bus.
Setup Start
Presets the E4981A. Sets the trigger conditions of the E4981A.
STB Check
Waits until the status byte becomes 192. Displays the status byte while
waiting and again after processing.
Setup End
Closes the I/O bus.
ErrorProc
Displays an error number when an error occurs.
ErrorCheck
A subroutine to check whether an error occurs when the IO Library
Suite function is executed.
SelectMode
A subroutine to change assignment of the I/O bus and address setting
according to the connection type i.e. USB or GPIB between the
E4981A and a PC.
FnComp
A function which performs OPEN/SHORT/LOAD correction and
returns 1 on success and 0 on failure.