Network and Remote Operation
R&S
®
FSPN
257
User Manual 1179.4363.02 ─ 01
●
INF and NINF
: INFinity and Negative INFinity (NINF) represent the numeric values
9.9E37 or -9.9E37, respectively. INF and NINF are only sent as instrument respon-
ses.
●
NAN
: Not A Number (NAN) represents the value 9.91E37. NAN is only sent as an
instrument response. This value is not defined. Possible causes are the division of
zero by zero, the subtraction of infinite from infinite and the representation of miss-
ing values.
Example:
Setting command:
SENSe:LIST:FREQ MAXimum
Query:
SENS:LIST:FREQ?
Response:
3.5E9
Queries for special numeric values
The numeric values associated to
MAXimum/MINimum/DEFault
can be queried by
adding the corresponding mnemonic after the question mark.
Example:
SENSe:LIST:FREQ? MAXimum
Returns the maximum numeric value as a result.
Boolean Parameters
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. The numeric values are provided as the response for a
query.
Example:
Setting command:
HCOPy:DEV:COL ON
Query:
HCOPy:DEV:COL?
Response:
1
Text Parameters
Text parameters observe the syntactic rules for mnemonics, 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 response to a query, the short form of the text is provi-
ded.
Example:
Setting command:
HCOPy:PAGE:ORIentation LANDscape
Query:
HCOP:PAGE:ORI?
Response:
LAND
Character Strings
Always enter strings in quotation marks (' or ").
Remote Control Basics
