R&S SMB100A - Page 278

Remote Control Basics
R&S
®
SMB100A
263Operating Manual 1407.0806.32 ─ 21
INFinity, Negative INFinity (NINF) represent the numeric values 9.9E37 or -9.9E37,
respectively. INF and NINF are only sent as instrument responses.
●
NAN
Not A Number (NAN) represents the value 9.91E37. NAN is only sent as a instru-
ment 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 missing
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 mnemonics to the command. They must be entered follow-
ing the quotation 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 case of a query, the short form of the text is provided.
Example:
Setting command: HCOPy:PAGE:ORIentation LANDscape
Query: HCOP:PAGE:ORI?
Response: LAND
Character strings
Strings must always be entered in quotation marks (' or ").
SCPI Command Structure