Programming and Syntax Diagram Conventions Introduction to Programming
Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition 23
Programming and Syntax 
Diagram Conventions
A program message is a message containing commands or queries that 
you send to the instruments. The following are a few points about program 
messages:
• You can use either upper-case or lower-case characters.
• You can send several commands in a single message. Each command 
must be separated from the next one by a semicolon (
;).
• A command message is ended by a line feed character (LF) or 
<CR><LF>.
• You can use any valid number/unit combination.
In other words, 
1500NM,1.5UM and 1.5E-6M are all equivalent.
If you do not specify a unit, then the default unit is assumed. The default 
unit for the commands are given with command description in the next 
chapter.