Remote Spectrum Monitor User Guide : Programming with SCPI : Subsystem Commands : Data Parameter Notations
 
Data Parameter Notations
The following syntax conventions are used for data parameter descriptions in this manual:
Parameter Notations
<arg>
::=a generic command argument consisting of one or more of the other data types
<bNR1>
::=boolean values in <NR1> format; numeric 1 or 0
<boolean>
::=ON | OFF. Can also be represented as 1 or 0, where 1 means ON and 0 means OFF
Boolean parameters are always returned as 1 or 0 in <NR1> format by query commands
<integer>
::=an unsigned integer without a decimal point (implied radix point)
<NR1>
::=a signed integer without a decimal point (implied radix point)
<NR2>
::=a signed number with an explicit radix point
<NR3>
::=a scaled explicit decimal point numeric value with and exponent (e.g., floating point number)
<NRf>
::=<NR1>|<NR2>|<NR3>
<nv>
::=SCPI numeric value: <NRf>|MINimum|MAXimum|UP|DOWN|DEFault|NAN (Not A Number)|INFinity|NINFinity (Negative Infinity) or other types
<char>
::=<CHARACTER PROGRAM DATA> Examples: CW, FIXed, UP, and DOWN
<string>
::=<STRING PROGRAM DATA> ASCII characters enclosed by double quotes. For example: “OFF”
<block>
::=IEEE-488.2 block data format
<NA>
::=Not Applicable
Note 
+/- infinity and Not-A-Number (NAN) values can be specified for parameters of type NR3 with the values of +/- 9.9e37 and 9.91e37, respectively.
Unit Suffixes
Unit suffixes are not required for data parameters, provided the values are scaled for the global default units. The instrument SCPI default units are: Hz (Hertz) for frequency related parameters s (seconds) for time related parameters, and m (meters) for distance related parameters.