Terminators; Command Separators - ILX Lightwave FPM-8200 User Manual

To enhance readability you can also use one or more white spaces before a comma, semicolon,
or terminator. Since your computer normally puts the terminator at the end of each command
string (line), this simply means that an extra space character at the end of your command line
works OK.
A query has no space between the mnemonic and the question mark. For
example:
Okay
TIMER?
Note that too many consecutive white spaces can overflow the FPM-8200's 256-
byte data I/O buffer.

Terminators

A program message terminator identifies the end of a command string. These are
the valid terminator sequences acceptable to the FPM-8200:
• <NL>
• <^END>
• <NL><^END>
The line length is limited by the 8200's 256-byte I/O buffer. The totol allowable is
not necessarily 256 characters, because output commands in the command line
use the same buffer.
Many computers terminate with <CR><NL><^END> (Carriage Return - New Line
- EOI). This is not a problem, because the FPM-8200 ignores <CR> (Carriage
Return) as white space.
The FPM-8200 terminates its responses with <CR><NL><^END>, unless you use
the TERM command to change it.
If you encounter problems with GPIB communications with the FPM-8200, the
terminator string can sometimes be the cause. Refer also to your GPIB interface
(controller) manual.

Command Separators

You can put more than one command on the same line (same command string) if
you separate them with a semicolon. The semicolon can be preceded by one or
more spaces. Examples:
01_10
Mode:dB; Ref 1.0; Filter FAST
Mode:dB ; Ref -10.3 ; Filter SLOW
R E M O T E O P E R A T I O N
Command Syntax
Not Okay
TIMER ?
3
C H A P T E R
27
FPM-8200
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