Spectrum Analyzer Measurement Guide : Spectrum Analyzer : Application Options Menu
 
Application Options Menu
Key Sequence: Shift > System (8) key > Application Options
SPA Application Options Menu
 
Impedance 50 ohm 75 ohm Other
Select either 50 ohm, 75 ohm, or Other impedance value. Selecting 75 ohm selects the 7.5 dB loss of the Anritsu 12N50‑75B adapter. For other adapters, select Other and enter the appropriate loss (0 dB is the default loss). Note that loss values are also applied to the relevant units.
Bias Tee
Refer to Bias Tee (Option 10). See the product Technical Data Sheet to check option availability on your instrument model.
Auto Ref Level
The Auto Ref Level function adjusts the position of a signal on the display screen so that it is approximately two divisions down from the top, if possible. When the key is pressed, the reference level is adjusted once. Auto Ref Level may turn off the low-noise front-end preamplifier, but does not turn it on. It has no effect on vertical scaling.
 
Back
Press this submenu key to return to the previous menu.