Program Data> (Parameters); Arbitrary Block Program Data - ILX Lightwave OMM-6810B User Manual

Optical power and wavelength meter
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3
C H A P T E R
A <program mnemonic> is a command or command path identifier. For example,
the <PROGRAM MESSAGE> "ENABLE:COND" consists of the command
"COND" and the path identifier "ENABLE." All of the legal <compound command
program headers> may be traced by starting from the root node of the command
structure and moving down by levels to paths, and finally to the command.
A <PROGRAM MESSAGE TERMINATOR> causes the next command search to
begin at the root node. A leading colon (:) on a <PROGRAM MESSAGE UNIT>
causes the instrument to begin searching for the command at the root node.
Otherwise (after a semicolon), the instrument first searches the most recently
used node for the command. It continues to search the command tree until it finds
a legal command path, by searching each previously used node up to the root. If
no legal path is found, the instrument generates an error message. For more
information on creating and using 6810B commands, see Advanced Programming
in this chapter.
<PROGRAM DATA> (Parameters)
Parameters (and other <PROGRAM DATA>) may be entered after a command in
a <PROGRAM MESSAGE UNIT>. The <COMMAND PROGRAM HEADER>
(command) and first <PROGRAM DATA UNIT> (parameter) must be separated by
a <PROGRAM HEADER SEPARATOR> (white space).
<ARBITRARY BLOCK PROGRAM DATA>
This element allows any 8-bit bytes (including extended ASCII) to be transmitted
in a message. The syntax for an <ARBITRARY BLOCK PROGRAM DATA>
element is shown in Figure 3.7.
28
OMM-6810B
G P I B / I E E E 4 8 8 . 2 R E M O T E O P E R A T I O N
ANSI/IEEE-488.2 Definitions
<program
:
mnemonic>
Figure 3.6 <compound query program header> Syntax Diagram
<program
:
mnemonic>
?

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