Setting the Amplitude Parameters  R&S FSH 
1145.5973.12 4.10  E-11 
Entering the input impedance 
 Press the AMPT key. 
 Press the RF INPUT softkey. 
A submenu opens. The two input impedance options 
“50 ” and “75 ” are displayed. 
 
 Select the input impedance you want using the 
rotary knob or the cursor keys and confirm your 
selection by pressing the ENTER key. 
Note:  If you have selected 75 
, and do not 
connect a matching pad to the RF input,  
incorrect level readings will be obtained.