3 Using the Scope Functions  
96 Agilent U1602B/U1604B User’s and Service Guide 
Probe Calibration
When connecting a passive probe to the instrument for the first time, 
scope probe compensation must be performed to guarantee the accuracy 
of your measurement. Refer to “To Compensate Scope Probe   15” for the 
step- by- step instructions for scope probe compensation.
Low Battery Mode
When the instrument is under low battery condition, the following 
warning message appears on the display screen and audible beeper 
sounds. After the display of the warning message, the instrument can be 
used for approximately 15 minutes before the instrument automatically 
turn off. If the instrument is under low battery mode in power off 
condition, when users turn the instrument on, it automatically shuts off 
after one minute to protect the internal circuit.
Figure 3-52 Message display during low battery condition