A6 Som Board; Main Battery - Keysight N9912A Service Manual

Theory of Operation RF Analyzer
Measurement Group N9912A

A6 SOM Board

The A6 SOM (System on Module) board plugs directly into the A5 system board as a daughter board and
contains:
• the CPU,
• 64 MB of flash ROM,
• 128 MB of RAM, and
• I/O interface.
The interfaces on the SOM are:
• UART to the System Monitor on the A5 system board
• LCD interface
• Left and right audio outputs
• SD card bus
• USB host interface
• Interface to USB hub
• LAN interface 10/100 base T
• General purpose interface lines
The A6 SOM board is powered by the 3.3 volt digital supply.
Licenses which enable instrument options are stored in the A6 SOM flash ROM.

Main Battery

The battery is a rechargeable 10.8 V lithium-ion type. Refer to "Battery Disposal" on page 1-7 for important
information about replacing and disposing of this battery.
Refer to "Battery Related Information" on page 5-18 for details on the main battery.
5-16 Service Guide N9912-90003