Keysight Technologies E5260 Series Programming Manual page 256

Command Reference
Command Reference
63 : Available only for the Keysight E5270B with HRSMU and ASU.
Returns the 1 pA auto ranging operation mode:
SAR chnum,mode
[;SAR chnum,mode]
:
[;SAR chnum,mode]<CR/LF^EOI>
If no channel is connected to ASU.
SAR<CR/LF^EOI>
64 : Available only for the Keysight E5270B with HRSMU and ASU.
Returns the operation mode of the ASU connection status indicator:
SAL chnum,mode
[;SAL chnum,mode]
:
[;SAL chnum,mode]<CR/LF^EOI>
If no channel is connected to ASU.
SAL<CR/LF^EOI>
4- 72 Keysight E5260/E5270 Programming Guide, Edition 4