170 Chapter 2 
Front-Panel Key Reference
Preset
Pressing the Preset front-panel key brings up the User Preset, Mode 
Preset
, and Factory Preset menu keys. 
•If 
User Preset is pressed, the user preset state is recalled. To set the 
user preset state, change the analyzer settings as desired, then press 
System, Power On/Preset, Save User Preset.
•If 
Mode Preset is pressed, the current mode settings are reset to the 
factory defaults. Pressing 
Mode Preset does not change the mode.
•If 
Factory Preset is pressed, a factory preset will be performed as 
described above. 
NOTE Recalling any state, including the user preset state, will affect the 
conditions of more parameters than are affected by a factory preset. For 
example, external preamp gain and input impedance correction are not 
affected by a factory preset but may be affected by a user preset.
NOTE In the System menu, if Power On is set to Preset, and Preset Type is set to 
Factory, turning on the analyzer performs a factory preset. The last 
state of the analyzer (before it was turned off) is recalled if 
Power On is 
set to 
Last. The user preset state is recalled if Power On is set to Preset 
and Preset Type is set to User.
Table 2-8  Factory Preset Conditions 
Amplitude correction factors off
Amplitude Ref (Signal) off
Amplitude units 50
Ω
 input – dBm log
75
Ω
 input – dBmV log
Annotation and graticule 
display
on
Attenuation 10 dB (auto-coupled)
Center frequency:
E4401B and E4411B
E4402B and E4403B
E4404B
E4405B
E4407B and E4408B
750 MHz 
1.5 GHz 
3.35 GHz
6.6 GHz 
13.25 GHz 
CF step size 10% of span
Coupled functions all set to AUTO
Detector Peak (auto-coupled)
Display line level –25 dBm, display off