EXFO IQS-600 Integrated Qualification System - Manual (Page 271)

Integrated Qualification System 263
C Data Types
The following section provides an overview of the most common data
types that may appear in EXFO’s documentation on commands and
queries. The information is supplied for guidance purposes only.
For more detailed information, please refer to IEEE 488.2 and SCPI
standards. Additional reference sources are listed in SCPI Command
Structure on page 183.
Data types are divided into two groups: <PROGRAM DATA> for the types
that are used when you want to send messages to a device and
<RESPONSE DATA> for the types that are used when a device sends
responses to the controller unit.
The data types are presented in graphics often referred to as “railroad
diagrams”. The following example illustrates how to interpret such
diagrams.