Exfo FTB-500 Manuel d'utilisateur télécharger pdf (Page 245)

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101

Using FTB Products in an Automated Test Environment

FTB-500 237

SCPI Command Structure

The following table shows elements that are commonly used in the

commands or queries syntax.

Item Meaning

[ ] Enclose optional keywords or parameters.

Do not include square brackets in your program message.

[1..n] Indicates that the instrument provides multiple capabilities and that you

have to specify which one you want to use. If you omit the value, the

command will take effect on the first capability.

Multiple capabilities can be found at any branch of the command tree

(root, intermediate node or terminal node).

Example: If the command is :SENSe[1..n]:CORRection:COLLect:ZERO

and you want it to take effect on the second SENSe (sensor) capability

of the instrument, you may send this:

:SENSe2:CORRection:COLLect:ZERO.

Do not include square brackets in your program message; simply enter

the number.

<wsp> Indicates that a space is required (“wsp” stands for “white space”).

Corresponds to ASCII character codes (0 to 9 and 11 to 32, in decimal).

Do not include “<wsp>” in your program message; simply type a space.

<digit> Element used in the construction of various numeric data types. Can

take any value between 0 and 9 inclusively (corresponds to ASCII

character codes 48 to 57, in decimal).

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Exfo FTB-500 Manuel d'utilisateur Page 245

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