Spectrum Analyzer Measurement Guide : Interference Analyzer (Option 25) : Application Options
Application Options
Key Sequence: Shift > System (8) key > Application Options
IA Application Options
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.
Bias Tee
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.
Press this submenu key to return to the previous menu.