Chapter 2 209
Front-Panel Key Reference
System (Local)
Color Palette Agilent ESA-E Series only (E4401B, E4402B,  E4404B, E4405B and 
E4407B). Accesses the 
Color Palette menu keys. These keys are only 
available with analyzers having a color display. 
Key Access:
System, More
Default
  Sets all the display screen attributes to the factory 
defined colors. 
Key Access: 
System, More, Color Palette
Vision Impair 1
and 
Vision Impair 2  The special colors built into the Vision Impair 1 and 
Vision Impair 2 keys accommodate most color-deficient 
vision problems. 
Key Access: 
System, More, Color Palette
Optical Filter
  Accommodates the use of protective goggles while 
viewing lasers. 
Key Access: 
System, More, Color Palette
Monochrome
  Sets the display screen to green monochrome. The 
monochrome display uses different shades of green for 
each green value. This is especially useful for driving 
external monochrome monitors. 
Key Access: 
System, More, Color Palette
Diagnostics
Accesses the Front Panel Test menu key. 
Key Access: 
System, More
Front Panel
Test
  Allows you to verify the functionality of each 
front-panel key (except 
Preset). The number next to 
each key name increments once each time the key is 
pressed. Rotating the knobs causes the number of 
pulses to be counted. Press 
ESC to exit. 
Key Access: 
System, More, Diagnostics
Restore Sys 
Defaults
Resets the “persistent” state variables to their defaults. These are 
values, such as the GPIB address, that are unaffected by a power cycle 
or a preset (when 
Preset Type is set to Factory.) 
Key Access: 
System, More