Keysight 9000 Series Service Manual page 125

Power Supply Assembly
The AC input to the power supply is 100–240 VAC ±10%. Maximum input power is 375 W. The AC
input frequency is 50 to 60 Hz.
Filtered voltages of +5 V, +3.3 V, +2.5 V, +2.25 V, +1.8 V, +1.6 V, +1.2 V, -12 V, -6 V, -5 V, and
-3.8 V are supplied and distributed throughout the oscilloscope.
Monitor Assembly
The Flat Panel Display (FPD) monitor is a thin film liquid-crystal touch screen display (TFT-LCD).
This FPD is an 15 inch diagonal, 1024 by 768 pixel XGA color monitor.
Acquisition System
There is one acquisition assembly. The acquisition boards contain the TUT modules, the Onboard ADC,
the clock distribution, the data management ASICs, the external acquisition memory, the ADC, the
communication and programming FPGA, and the supporting power supply circuitry.
Front Panel
The front panel board and autoprobe board are split into three interconnecting PCAs. The front panel
keyboard has a breakaway section that interfaces to the keyboard. This breakaway section receives
power supply nets from the acquisition board and generates programmable voltages for the autoprobe
interface.
The keyboard links to the scope PC motherboard through a high-speed USB 2.0 interface. The on-board
USB hub serves the PIC microcontroller, the touch screen controller board, and up to three front panel
USB connectors for a customer's peripherals.
A conductive element on the inside of each key shorts a gap on the underlying keyboard circuit board.
The keyboard controller detects this short and sends the proper keypress information to the system
controller on the motherboard.
Twelve knobs are located on the front panel.
125