Remote Commands
R&S
®
Spectrum Rider FPH
276
User Manual 1321.1011.02 ─ 06.00
Multiple keywords
Some key words occur in several levels within one command system. Their effect
depends on the structure of the command, i.e. at which position in the header of a
command they are inserted.
Example:
SOURce:FM:POLarity NORMal
This command contains key word
POLarity
in the third command level. It defines the
polarity between modulator and modulation signal.
Example:
SOURce:FM:EXTernal:POLarity NORMal
This command contains key word
POLarity
in the fourth command level. It defines
the polarity between modulation voltage and the resulting direction of the modulation
only for the external signal source indicated.
Optional Keywords
Some command systems permit certain key words to be inserted into the header or
omitted. These key words are marked by square brackets in the description. The full
command length must be recognized by the instrument for reasons of compatibility
with the SCPI standard. Some commands are considerably shortened by these
optional key words.
Example:
[SENSe]:BANDwidth[:RESolution]:AUTO
This command couples the resolution bandwidth of the instrument to other parameters.
The following command has the same effect:
BANDwidth:AUTO
Optional keywords with numeric suffixes
Do not omit an optional keyword if it includes a numeric suffix that is relevant for the
effect of the command.
Example:
DISPlay[:WINDow<1..4>]:MAXimize <Boolean>
Command
DISP:MAX ON
refers to window 1.
In order to refer to a window other than 1, you must include the optional
WINDow
parameter with the suffix for the required window.
DISP:WIND2:MAX ON
refers to window 2.
Long and Short Form
The key words feature a long form and a short form. Either the short form or the long
form can be entered, other abbreviations are not permitted.
SCPI Command Structure and Syntax
