The 3.8 GHz frequency adjustment is used to adjust the frequency accuracy of the network analyzer's 3.8 GHz permanent-magnet YIG oscillator (PMYO) on the A12 source assembly.
The procedures for this adjustment may be found in the PNA on-line help. To find the procedures, perform the following steps:
On the PNA front panel, press the green Help button located in the Command block of keys. The on-line Help window is displayed.
The Help window may not be expanded fully. If the Hide icon is located in the upper left -hand corner of the tool bar, the help window is already expanded. Proceed to step 3. If the Show icon is in the upper-left corner, click it to expand the window.
From the left pane of the Help window, click the Index tab and search for 3.8 GHz adjustment under keywords.
Double-click 3.8 GHz adjustment from the keyword menu to display the description and procedure.