116 SSG5000A Programming Guide
This allows the VISA functions and VISA data types to be used in a program.
3.
Add the following code:
(1)
USBTMC access code.
Write a function Usbtmc_test:
Private Function
Usbtmc_test()
As Long
' This code demonstrates sending synchronous read & write commands
' to an USB Test & Measurement Class (USBTMC) instrument using
' NI-VISA
' The example writes the "*IDN?\n" string to all the USBTMC
' devices connected to the system and attempts to read back
' results using the write and read functions.
' The general flow of the code is
' Open Resource Manager
' Open VISA Session to an Instrument
' Write the Identification Query Using viWrite
' Try to Read a Response With viRead
' Close the VISA Session
Const
MAX_CNT = 200
Dim
defaultRM
As
Long
Dim
instrsesn
As
Long
Dim
numlnstrs
As
Long
Dim
findList
As
Long
Dim
retCount
As
Long
Dim
status
As
Long
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