RIGOL M300 - Manual (Page 55)

Chapter 2 Command System RIGOL
Programming Guide for DM3000 2-43
Function Set the reference value of dB operation and the unit is dBm.
The query returns an integer.
Explanation  <range> can be any integer ranging from -120 to +120.
 The “DEF” is 0.
12. :CALCulate:DBM:STATe
Syntax
:CALCulate:DBM:STATe?
:CALCulate:DBM:STATe {ON|OFF|1|0}
Function Enable or disable the dBm operation function.
The query returns ON or OFF.
Default OFF
13. :CALCulate:DBM?
Syntax
:CALCulate:DBM?
Function The query returns the dBm measurement value in scientific notation,
for example, -4.15457917E+01.
Explanation dBm operation function must be enabled before sending this
command.
14. :CALCulate:DBM:REFErence
Syntax
:CALCulate:DBM:REFErence?
:CALCulate:DBM:REFErence {
<range> |MIN|MAX|DEF}
Function Set the reference resistance of dBm operation and the unit is Ω.
The query returns an integer.
Explanation  <range> can be any integer ranging from 2 to 8000.
 The “DEF” is 600.
15. :CALCulate:LIMIt:STATe
Syntax
:CALCulate:LIMIt:STATe?
:CALCulate:LIMIt:STATe {ON|OFF|1|0}
Function Enable or disable the Limit operation function.
The query returns ON or OFF.
Default OFF
16. :CALCulate:LIMIt?
Syntax
:CALCulate:LIMIt?
Function Query the current Limit operation result.