Agilent Technologies FieldFox N9923AN Service Manual page 57

RF Vector Network Analyzer Theory of Operation
N9923AN Grounding and Power
• If the analyzer is On, the lightening bolt is displayed in the battery icon.
• If the analyzer is Off, the LED below the On/Off Button slowly flashes orange with
increasing intensity.
• If the analyzer is in Standby, turn the analyzer on and observe the battery icon.
The battery charges much faster up to 70% of its full charge than it does above 70% of full
charge.
Battery Life
When a battery is new, an instrument should operate for about four hours on a fully
charged battery. The actual time will depend on operating mode and temperature.
As a battery goes through charge/discharge cycles, its capacity will decrease. A typical
battery will have more than 70% of its initial capacity after 200 full discharge cycles when
operating at 20 to 30 ° C ambient temperature.
Service Guide N9923-90005 5-17