R&S AFQ100A
SCPI Command Structure and Syntax
1401.3084.32 5.20
E-3
Special numeric value
The texts MINimum, MAXimum, DEFault, UP and DOWN are interpreted as
special numerical values.
In the case of a query, the associated numerical value is provided.
Example: Setting
command:
SOURce:IMPairment:GAIN:I MAXimum
Query:
SOURce:IMPairment:GAIN:I?
Answer:
0
MIN/MAX
MINimum
and
MAXimum
denote the minimum and maximum value.
DEF
DEFault
denotes a preset value. This value conforms to the default setting,
as it is called by the *RST command.
UP/DOWN
UP
,
DOWN
increases or reduces the numerical value by one step. The step
width can be specified via an allocated step command for each parameter
which can be set via UP, DOWN.
INF/NINF
INFinity
, Negative INFinity (
NINF
) represent the numerical values
-
9.9E37
or
9.9E37
, respectively. INF and NINF are only sent as device
responses.
NAN
Not A Number (
NAN
) represents the value
9.91E37
. NAN is only sent as
device response. This value is not defined. Possible causes are division by
zero, subtraction or addition of infinite and the representation of missing
values.
Boolean Parameters
Boolean parameters represent two states. The ON state (logically true) is
represented by ON or a numerical value unequal to 0. The OFF state
(logically untrue) is represented by OFF or the numerical value 0. ON or OFF
is returned by a query.
Example: Setting
command:
SOURce:EQUalizer:STATe OFF
Query:
SOURce:EQUalizer:STATe?
Answer:
0
Text
Text parameters observe the syntax rules for key words, i.e. they can be
entered using a short or long form. Like any parameter, they have to be
separated from the header by a white space. In the case of a query, the short
form of the text is provided.
Example: Setting
command:
SOURce:TRIGger:SOURce MANual