1 Preparation for Use
34 Keysight 53220A/53230A User’s Guide
Battery care
When the battery is enabled and the instrument is not connected to AC power,
the battery discharges at 30% of full capacity per day. When the battery is
disabled and AC power is not connected, the battery discharges at 10% of full
capacity per month.
When storing the instrument without AC power applied, do not allow the battery
to discharge below 10%. The following equation can be used to determine
instrument storage time without AC power - and still enable the instrument to be
fully recharged:
months battery disabled * 10% + days battery enabled * 30% = 90%
A fully discharged battery may need to be replaced if it has not been recharged for
six to 18 months.
Using built-in help
Instrument help is available by pressing and holding any front panel key or
softkey. Pressing the Help key enables you to select additional help topics
including front panel measurement examples.
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