Agilent Technologies ENA Series User Manual page 478

Setting and Using the Control and Management Functions
Initial Source Port Control function
To disable the Initial Source Port Control feature (applicable to Rev.A.03.54 and
later):
When using the front panel menu - Service-Init Src Ctrl [OFF]
When using the SCPI command - SYSTem:ISPControl[:STATe] OFF
When using the VBA command - SCPI.SYSTem.ISPControl.STATe = False
472 Chapter 13