Chapter 9
145
Measurement Applications (Sample Programs)
Sorting Measurement Results Using Comparator
9.
M
easu
rem
ent
Applica
tio
ns
(S
amp
le
Prog
ra
ms)
Sorting Measurement Results Using Comparator
This application program sorts the measurement results using the comparator function.
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 comparator limit values for Bin1,Bin2
and Bin3 of the E4981A. Sets the trigger conditions of the E4981A.
Measurement
Enables Bin 1 to 3. Disables Bin 4 to 9. Reads measurement values
using *TRG command fifty times. Displays the bin values.
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.