HP 53131A/132A 225 MHz Programming Manual page 119

Chapter 3 Programming Your Universal Counter for Remote Operation
Elements of SCPI Commands
If you need to query the scale and offset values, you need to know if you are in
ASCII or REAL data format. The values returned from the following query will
be sent using the format that is currently defined (:FORMat[:DATA]) in the box.
To query the scale, use the following command:
:TRACE? SCALE
Then, enter the data, keeping in mind how it will be formatted
(ASCII or REAL).
Programming Guide 3-51