Operating instructions

Structure and Syntax of the Device Messages R&S ESCI
1166.6004.12 5.12 E-1
Responses to Queries
A query is defined for each setting command unless explicitly specified otherwise. It is formed by adding
a question mark to the associated setting command. According to SCPI, the responses to queries are
partly subject to stricter rules than in standard IEEE 488.2.
1 The requested parameter is transmitted without header.
Example: INPut:COUPling? Response: DC
2. Maximum values, minimum values and all further quantities, which are requested via a special text
parameter are returned as numerical values.
Example: SENSe:FREQuency:STOP? MAX Response: 3.5E9
3. Numerical values are output without a unit. Physical quantities are referred to the basic units or to the
units set using the Unit command.
Example: SENSe:FREQuency:CENTer? Response: 1E6 for 1 MHz
4. Truth values <Boolean values> are returned as 0 (for OFF) and 1 (for ON).
Example: SENSe:BANDwidth:AUTO? Response: 1 for ON
5. Text (character data) is returned in a short form (see also Section 3.5.5).
Example: SYSTem:COMMunicate:SERial:CONTrol:RTS? Response(for standard): STAN