Rohde & Schwarz 1145.1010.04/05/06, Руководство по эксплуатации

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Remote Control: Introduction R&S
®
ZVA/ZVB/ZVT
1145.1084.12 5.12 E-1
Example:
Setting command:
SENSe:FREQuency:STARt MINimum
The query
SENSe:FREQuency:STARt?
returns
300000
(the exact value depends on the analyzer
model).
The following special values can be used:
•
MIN/MAX MINimum and MAXimum denote the minimum and maximum value of a range of
numeric values.
•
DEF DEFault denotes the preset value. This value is set by the *RST command.
•
UP/DOWN UP, DOWN increases or reduces the numeric value by one step. The step width is
reported in the detailed command description.
•
INF/NINF 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.
Unless it is explicitly stated in the command description you can use the special numeric
parameters for all commands of the analyzer.
Boolean Parameters
Boolean parameters represent two states. The ON state (logically true) is represented by ON or a
numerical value different from 0. The OFF state (logically false) is represented by OFF or the numerical
value 0. A query responds with 0 or 1.
Example: Setting command:
SWEep:TIME:AUTO ON
Query:
SWEep:TIME:AUTO?
returns
1
Text Parameters
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:
TRIGger:SOURce EXTernal
Query:
TRIGger:SOURce?
returns
EXT
Strings
Strings must always be entered within single or double quotation marks (' or ").
Example:
CONFigure:CHANnel:NAME "Channel 4"
or
CONFigure:CHANnel:NAME 'Channel 4'