Rohde & Schwarz FSWP Series - Page 80

Remote Commands for the I/Q Analyzer
R&S
®
FSWP
80User Manual 1177.5856.02 ─ 07
Not a number. Represents the numeric value 9.91E37. NAN is returned in case of
errors.
8.1.6.2 Boolean
Boolean parameters represent two states. The "ON" state (logically true) is represen-
ted by "ON" or a numeric value 1. The "OFF" state (logically untrue) is represented by
"OFF" or the numeric value 0.
Querying Boolean parameters
When you query Boolean parameters, the system returns either the value 1 ("ON") or
the value 0 ("OFF").
Example:
Setting: DISPlay:WINDow:ZOOM:STATe ON
Query: DISPlay:WINDow:ZOOM:STATe? would return 1
8.1.6.3 Character Data
Character data follows the syntactic rules of keywords. You can enter text using a short
or a long form. For more information see Chapter 8.1.2, "Long and Short Form",
on page 77.
Querying text parameters
When you query text parameters, the system returns its short form.
Example:
Setting: SENSe:BANDwidth:RESolution:TYPE NORMal
Query: SENSe:BANDwidth:RESolution:TYPE? would return NORM
8.1.6.4 Character Strings
Strings are alphanumeric characters. They have to be in straight quotation marks. You
can use a single quotation mark ( ' ) or a double quotation mark ( " ).
Example:
INSTRument:DELete 'Spectrum'
8.1.6.5 Block Data
Block data is a format which is suitable for the transmission of large amounts of data.
The ASCII character # introduces the data block. The next number indicates how many
of the following digits describe the length of the data block. In the example the 4 follow-
ing digits indicate the length to be 5168 bytes. The data bytes follow. During the trans-
mission of these data bytes all end or other control signs are ignored until all bytes are
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