Terminators; Command Separators; Parameters - ILX Lightwave LDT-5900 Series User Manual

Terminators

A program message terminator identifies the end of a command string. These are
the valid terminator sequences:
• <NL>
• <^END>
• <NL><^END>
Many computers terminate with <CR><NL><^END> (Carriage Return - New Line
- EOI). A carriage return (<CR>) is read as a white space. The LDT-5900
terminates its responses with <NL><^END>.

Command Separators

You can put more than one command on the same line (same command string) if
you separate them with a semicolon.
MEAS:T?; output?
MODE T; set:T 35.450 ; const:therm 1.125, 2.347, 0.855;
output ON

Parameters

Some commands require a parameter. The parameter must be separated from
the command by at least one space.
The syntax symbol <nrf value> refers to the flexible numeric representation
defined by the GPIB standard. It means that you can represent numbers in integer
or floating point form, or in engineering/scientific notation. The IEEE-488.2
standard uses the names NR1, NR2, and NR3 respectively to denote "integer",
"floating point", and "scientific notation". For example the number "twenty" may be
represented by any of the following ASCII strings:
Integer
Floating point
Scientific notation
There are no default values for omitted parameters. If a command is expecting a
parameter and none is entered, an error is generated.
01_10
Note: The semicolon can be preceded by one or more spaces. Examples:
Note: White space after a trailing semicolon will result in an error if no command follows it.
R E M O T E O P E R A T I O N S
Remot e Comm unica t ion
20 +20
20.0 +20.0
2.0E+1 +2.0E+1
2.0e+1 +2.0e+1
C H A P T E R
NR1
NR2
NR3
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