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Programmer’s Guide
11-3
SCPI Command Summary
Queries, Forms, and Parameter Types
Parameter Types
In the following tables, the FORM column gives the parameter type
returned by the instrument in response to a query. NR1, NR2 and NR3
refer to the different types of numeric data. CHAR (character data),
STRING (string data) and BLOCK (block data) are also used to describe
response types. The parameter types expected by the instrument as part
of a command are summarized below:
NR1
Integers (such as +1, 0,
−
1, 123,
−
12345)
NR2
Floating point numbers with an explicit decimal point
(such as 12.3, +1.234,
−
0.12345)
NR3
Floating point numbers in scientific notation (such as
+1.23E+5, +123.4E-3, -456.789E+6)
CHAR
Character parameters (sometimes referred to as
discrete parameters) consisting of ASCII characters.
They are typically used for program settings that have
a finite number of values.
STRING
String parameters can contain virtually any set of
ASCII characters. The string must begin with a single
quote (
'
) or a double quote (
"
) and end with the
same character.
BLOCK
Block parameters are typically used to transfer large
quantities of related data (like a data trace).
Some numeric parameters may be followed by an appropriate suffix.
Commands that accept a suffix also allow standard metric multipliers to
be combined with the suffix. For example, commands that set a
frequency will accept HZ, KHZ, MHZ and GHZ. Commands that set a
time will accept S, MS, US, NS, PS, FS and AS. Note that case is ignored.
The multiplier "M" is interpreted as either milli- (10
-3
) or mega- (10
6
),
depending on context. If no suffix is included, the default units for the
parameter are used.
Содержание 8712ES
Страница 11: ...1 1 1 Introduction to GPIB Programming ...
Страница 27: ...2 1 2 Synchronizing the Analyzer and a Controller ...
Страница 36: ...3 1 3 Passing Control ...
Страница 39: ...4 1 4 Data Types and Encoding ...
Страница 46: ...5 1 5 Using Status Registers ...
Страница 71: ...6 1 6 Trace Data Transfers ...
Страница 98: ...6 28 Programmer sGuide Trace Data Transfers Internal Measurement Arrays ...
Страница 99: ...7 1 7 Using Graphics ...
Страница 105: ...8 1 8 Front Panel Keycodes ...
Страница 111: ...9 1 9 Introduction to SCPI ...
Страница 129: ...10 1 10 Menu Map with SCPI Commands ...
Страница 268: ...12 1 12 SCPI Conformance Information ...
Страница 290: ...13 1 13 SCPI Error Messages ...