HP 53150A Series Programming Manual page 55

Chapter 3 Programming Your Counter for Remote Operation
Elements of SCPI Commands
Examine the portion of the [:SENSe] subsystem shown below:
[:SENSe]
:FREQuency
:RESolution
The root-level keyword [:SENSe] is an optional keyword. To set the
Counter's frequency resolution, you can use either of the following:
:SENS:FREQ:RES
or
:FREQ:RES
Programming Guide 3-15