Using A Semicolon (;); Using A Comma (,); Using Whitespace; Using "?" Commands - Agilent Technologies U2000 Series Manual

in the present path (for the specified root- level command) of the command
tree. You must separate command mnemonics from each other using a colon.
You can omit the leading colon if the command is the first of a new program
line.

Using a Semicolon (;)

Use a semicolon to separate two commands within the same command string.
The semicolon does not change the present path specified. For example, the
following two statements are equivalent. Note that in the first statement the
first colon is optional but the third is compulsory.
CALibration[1]:ZERO:TYPE EXTernal;CALibration[1]:ZERO:AUTO ONCE
CALibration[1]:ZERO:TYPE EXTernal;ZERO:AUTO ONCE

Using a Comma (,)

If a command requires more than one parameter, you must separate adjacent
parameters using a comma.

Using Whitespace

You must use whitespace characters, [tab], or [space] to separate a parameter
from a command keyword. Whitespace characters are generally ignored only
in parameter lists.

Using "?" Commands

The bus controller may send commands at any time, but a SCPI instrument
may only send responses when specifically instructed to do so. Only query
commands (commands that end with a "?") instruct the instrument to send a
response message. Queries return either measured values or internal
instrument settings.
U2000 Series Programming Guide
Power Sensor Remote Operation 1
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