Parameters; Command Tree Structure - ILX Lightwave FPM-8200 User Manual

3
C H A P T E R

Parameters

Some commands require a parameter. For example, you can set FPM-8200
wavelength response to 1540 nm with the command WAVE 1540, where "1540" is
the 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
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
For more information on these definitions, refer to the IEEE-488 standard.
There are no default values for omitted parameters. If a command is expecting a
parameter and none is entered, an error is generated.

Command Tree Structure

Some FPM-8200 device-dependent GPIB commands are compound commands,
in which the first mnemonic opens a path to a set of commands relating to that
path. The second mnemonic then defines the actual command. For example in
the command Mode:dB, Mode opens the command path to FPM-8200 modes,
and dB defines the relative dB mode. This is similar to defining a path for a
computer file by starting with the root directory and listing intermediate
subdirectories.
The diagram below illustrates this structure. All other (non-compound) commands
are at the root of this tree.
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 FPM-8200
R E M O T E O P E R A T I O N
Command Syntax
20 +20
20.0 +20.0
2.0E+1 +2.0E+1
2.0e+1 +2.0e+1
NR1
NR2
NR3