Keysight 34420A - Page 216

4 Remote Interface Reference
212 Keysight 34420A User’s Guide
5 Save the change and turn off the menu.
The parity selection is stored in non-volatile memory, and does not change
when power has been off or after a remote interface reset.
Remote Interface: you can set or query the parity using the following
commands:
SYStem:COMMunicate:SERial
:PARity {EVEN | ODD | NONE}
:PARity?
Auto/Man
ENTER