Register-Based Communication

Register-Based Communication

The following topics show how to use the VISA library in register-based communication.

Introduction

High-Level Access Operations

High-Level Block Operations

Low-Level Access Operations

Overview of Register Accesses from Computers

Using VISA to Perform Low-Level Register Accesses

Operations versus Pointer Dereference

Manipulating the Pointer

Bus Errors

Comparison of High-Level and Low-Level Access

Speed

Ease of Use

Accessing Multiple Address Spaces

Shared Memory Operations

Shared Memory Sample Code

Note  You can skip these topics if you are using GPIB, Serial, Ethernet, or USB exclusively. Register-based programming applies only to PXI, VXI, and GPIB-VXI.