# SCPI Basics

SCPI Introduction

- Quick Start
- LAN and USB Connections
- Starting a Program
- Common Child Commands
- SCPI Basics
- File Path Substitution Strings
- Definite-Length Block Response Data
- Indefinite-Length Block Response Data
- Waveform Content Windows
- SCPI Security in Infiniium
- Concepts

It's easy to send a command to Infiniium 2026. Simply create a command string from the various commands, and place the string in your program language's output statement. For commands other than common commands, include a colon before the subsystem name. Commands can be sent using any combination of uppercase or lowercase ASCII characters. Responses, however, are always returned in uppercase.

- Program Message Terminator
- Short or Long Forms
- White Space
- Combining Commands
- Adding Parameters to a Command
- String Arguments
- Numbers
- Infinity Representation
- Queries
- Endianness of Returned Binary Block Data
- NaN (Not A Number)
- Sequential and Overlapped Commands
- SCPI Tree