Anritsu MS9740A - Message Function Category

Chapter 3 Message Details
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3.3 Message Function Category
3.3.1 IEEE488.2 Common Messages and Device Dependent Messages
The device messages are classified by the IEEE488.2 common commands
and instrument dependent commands.
IEEE488.2 Common Commands and Queries
The device messages are specified by IEEE488.2-1992. The header first
letter of these messages is an asterisk symbol (*).
Common messages and queries are defined as required or optional by
IEEE standard.
The common messages used with MS9740A are only the messages
defined as obligatory by the standard.
Device Dependent Messages
These are the device messages required for the panel operations and
measurement functions of MS9740A.