Technical data

136 Agilent Infiniium 90000 Series Oscilloscopes Programmer's Reference
8 Programming Conventions
Response Generation
As defined by IEEE 488.2, query responses may be buffered for these
reasons:
When the query is parsed by the oscilloscope.
When the computer addresses the oscilloscope to talk so that it may
read the response.
This oscilloscope buffers responses to a query when the query is parsed.