Using A Semicolon (;); Using A Comma (,); Using Whitespace; Using "?" Commands - Keysight N432A Programming Manual

1 N432A Remote Operation

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.
:DISP:FORM DIG;:DISP:SEL2
:DISP:FORM DIG;SEL2

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 queries
(commands that end with a "?") instruct the instrument to send a response
message. Queries return either measured values or internal instrument settings.
If you send two queries without reading the response from the first, then attempt
NOTE
to read the second response, you may receive some data from the first response
followed by the complete second response. To avoid this, do not send a query
without reading the response. When you cannot avoid this situation, send a
Device Clear before sending the second query.
48 Keysight N432A Programming Guide