EXFO FTB-500 (Window XP) - Handbuch (Seite 262)

Using FTB Products in an Automated Test Environment
254 FTB-500
SCPI Command Structure
<mnemonic> Element used in the construction of certain data types and program
messages.
In the diagram above,

“<Upper/lower case alpha>” corresponds to ASCII character codes
(65 to 90 and 97 to 122, in decimal).

“_” corresponds to an underscore character (code 95, in decimal).
< > Text appearing between angled brackets specifies the command
parameter to be sent or the response you will receive from an
instrument.
Do not include angled brackets in your program message.
| Indicates that one, and only one, value must be selected from the
available choices.
Example: If the list is 0|1, you can only select 0 or 1.
Do not include the pipe character in your program message.
{ } Indicate that the enclosed parameters can appear 0 to n times when the
command is used.
Do not include braces in your program message.
: Mandatory to separate keywords. Can be omitted at the beginning of a
program message. For example, you can use either :SYST:ERR or
SYST:ERR.
Item Meaning
<Upper/lower
case alpha>
<Upper/lower
case alpha>
_
<digit>