Operating Manual 1303.6580.32-06
Switches between the internal and external reference signal source. The default setting is internal
reference. It is important, that the external reference signal is deactivated when switching from external to
internal reference to avoid interactions.
If the reference signal is missing when switching to external reference, the message EXREF is displayed
to indicate that no synchronization is possible.
The R&S ZVL can use the internal reference source or an external reference source as frequency
standard from which all internal oscillators are derived. A 10 MHz crystal oscillator is used as internal
reference source. In the external reference setting, all internal oscillators of the R&S ZVL are
synchronized to the external reference frequency (also 10 MHz).
Opens a submenu to install firmware versions. The installation of a new firmware version can be
performed via USB or LAN interface; see Firmware Update. With firmware versions V3.00 and higher, a
user account with administrator rights is necessary to install a printer (see Operation with and without
Opens the Firmware Update dialog box. The update path is changed by entering the new path or via the
Browse button. The installation is started via the Execute button; see Firmware Update.
Opens a submenu to install options. With firmware versions V3.00 and higher, a user account with
administrator rights is necessary to install a printer (see Operation with and without Administrator Rights).