User's Manual

100 Agilent U1251A/U1252A User’s and Service Guide
5 Maintenance
Figure 5-2 Battery capacity display as trickle
5 After pressing Shift or when the self- test starts, the meter
performs a self- test to check if the battery in the meter is
the rechargeable type. The self- test takes about 2 to 3
minutes. Avoid pressing any button during the self- test. A
message is diplayed as shown below.
Figure 5-3 Self-test
Table 5-1 Battery voltage and corresponding percentage of charges in standby and charging modes
Condition Battery voltage Proportional percentage
Trickle (SBY) 6.0 V to 8.2 V 0% to 100%
Charging 7.2 V to 10.0 V 0% to 100%