2 53210A Software Installation and Interface Configuration
54 Keysight 53210A User’s Guide
Figure 2-2 The Web UI SCPI Command Interface.
Any command in the counter’s SCPI command set can be sent to the instrument. 
Query commands which include ‘?’ in the syntax return data and can be sent by 
selecting Send & Read after the command is entered. Commands which do not 
return data are sent using Send Command.
Web interface pages other than the ‘Welcome Page’ may be password protected. 
When shipped from the factory no password is set; however, an ‘Enter Password’ 
dialog box may appear. Click on the dialog box to continue. 
If the page is password protected and the password is unknown, pressing 
[Utility], (I/O Config), (LAN Reset) on the front panel clears the password.