2.5.4.2 Downconverter Gain
To set the Downconverter gain, first push the Menu/Execute switch to get to the gain setting:
Operate the Menu/Execute switch until you get to the menu item you want to change see Figure 2.4 for
the sequence of menu options.
The following display is for changing the Downconverter gain. This is an important setting to optimize
spurious and should be made as accurately as possible to provide an output in the -20 to 0 dBm level
range:
DN G = +30.0
R
Pressing the Up/Down switch to change the level in 0.5, 1, or 10 dB steps. By using the horizontal
rocker switch the cursor can be moved left or right. Pressing the Up/Down switch down will toggle the
display digit selected until you have the desired gain.
NOTE: THE GAIN WILL BE CHANGED AS YOU ADJUST THE NUMBERS. HOWEVER, THE
VALUE WILL NOT BE STORED UNTIL YOU INDICATE YES IN THE SAVE SETTINGS
WINDOW.
When the display indicates the value desired you can push the Menu/Execute switch to the next item
OR you can scroll to “R”, push the Menu/Execute switch to get to:
SAVE SETTINGS?
Y N
Selecting Y will save the new settings. Selecting N will revert to the previous settings.
Pushing the Menu/Execute switch then takes you to the :
U U > L G=+10.0
D L > U G=25.0 INT
Figure 2.4 shows all the menu items and how to make changes.
2.5.4.3 Alarm Indications
An alarm condition for will occur if any local oscillator phase lock loop (PLL) comes out of lock.
2017-14 Manual, Rev. 0
Page 19
01/31/13
