Rohde & Schwarz FSWP Series - Page 79

Remote Commands for the I/Q Analyzer
R&S
®
FSWP
79User Manual 1177.5856.02 ─ 07
Parameters may have different forms of values.
● Numeric Values.......................................................................................................79
● Boolean...................................................................................................................80
● Character Data........................................................................................................80
● Character Strings.................................................................................................... 80
● Block Data...............................................................................................................80
8.1.6.1 Numeric Values
Numeric values can be entered in any form, i.e. with sign, decimal point or exponent. In
case of physical quantities, you can also add the unit. If the unit is missing, the com-
mand uses the basic unit.
Example:
With unit: SENSe:FREQuency:CENTer 1GHZ
Without unit: SENSe:FREQuency:CENTer 1E9 would also set a frequency of 1 GHz.
Values exceeding the resolution of the instrument are rounded up or down.
If the number you have entered is not supported (e.g. in case of discrete steps), the
command returns an error.
Instead of a number, you can also set numeric values with a text parameter in special
cases.
●
MIN/MAX
Defines the minimum or maximum numeric value that is supported.
●
DEF
Defines the default value.
●
UP/DOWN
Increases or decreases the numeric value by one step. The step size depends on
the setting. In some cases you can customize the step size with a corresponding
command.
Querying numeric values
When you query numeric values, the system returns a number. In case of physical
quantities, it applies the basic unit (e.g. Hz in case of frequencies). The number of dig-
its after the decimal point depends on the type of numeric value.
Example:
Setting: SENSe:FREQuency:CENTer 1GHZ
Query: SENSe:FREQuency:CENTer? would return 1E9
In some cases, numeric values may be returned as text.
●
INF/NINF
Infinity or negative infinity. Represents the numeric values 9.9E37 or -9.9E37.
●
NAN
Introduction