Letters; White Space - ILX Lightwave LDT-5900 Series User Manual

3
C H A P T E R

Letters

Any GPIB or RS-232 command or query must contain all of the letters that are
shown in upper case in the command definition, though they do not need to be
typed in upper case. Some of the device dependent commands include optional
letters shown in lower case in the command reference (Chapter 4, Command
Reference). Letter case does not matter. Lower case characters are used in this
manual to identify optional letters; although, the optional letters must be in the
correct sequence. Some examples of what does, and does not, work:
Okay
DISP
Disp
Displ
Displa
Display

White Space

White space is normally the space character (space bar). A single white space
must separate a command from its parameters or data. For example:
Okay
DELAY 500
To enhance readability, you can use one or more white spaces before a comma,
semicolon, or terminator. Since a computer normally puts the terminator at the
end of each command string (line), an extra space character at the end of the
command line does not affect the command string.
A query has no space between the mnemonic and the question mark. For
example:
Okay
TIMER?
44
LDT-5980/ 5948
R E M O T E O P E R A T I O N S
Remot e Comm unica t ion
Note: Too many consecutive white spaces can overflow the 80-byte data I/O buffer.
Not Okay
DS
dsp
dply
DSPLY
disply
Not Okay
DELAY500
Not Okay
TIMER ?