1Getting Started  
14 Agilent U1602B/U1604B User’s and Service Guide 
8 After firmware upgrade completion, the instrument will automatically 
power off.  
9 Click  Exit to close the firmware loader. 
10 Power on the instrument, press User > Utility (F4 softkey) > Languages 
(F2 softkey) on the front panel to select the English or installed 
language. The Quick Help menu will be displayed in the selected 
language. 
To Adjust Contrast of Display
✔ The instrument allows you to adjust the LCD brightness with the 
following steps:
1 Press   button and F1 softkey to enter Display mode.
2 On 1/2 page of Display mode, press F2 once to release the figure lock.
3 To increase the contrast of the display, turn the rotary switch 
clockwise. To decrease the contrast, turn the rotary switch 
counter- clockwise.
4 Press F2 again to lock the contrast setting.
Figure 1-9 Adjust display contrast