Keysight B2961A/B2962A SCPI Command Reference, Edition 6 4- 85
Subsystem Commands
READ Subsystem
This example shows the data containing the latest current data (ch1curr10) of the
10-step sweep measurement by channel 1, and the latest current data (ch2curr5) of
the 5-step sweep measurement by channel 2.
If the measurement function is not enabled or no data exists, response returns
+9.910000E+37 (ASCII) or NaN (IEEE-754) which indicates “not a number”.
Example :READ:CURR? (@2,1)