Theory of Operation
Module Overvi
ews
A Microsoft Windows processor system is the primary controller of the
instrument. The instrument features an XGA resolution flat-panel display, a
transparent
touch screen, and a front panel with direct access to commonly used
instrument functions. You can also make complete use of the instrument with a
mouse and a keyboard.
Front Panel (FP) Board
Push-butt
on switches on the Front Panel (FP) board are read by an embedded
microcontroller, which sends the button and knob change information to the μAT X
board via a USB path. The FP board consists of the following blocks:
USB controller (Cypress EZ-USB FX1)
FPGA (Al
tera Cyclone)
Key switch matrix
LED indicators (Tri-Color and Mono-Color)
Display Board
The Display board supports interconnection between the μAT X b o a r d an d FP
board. Two internal USB ports come from the μATX board. One USB connects to
a touch panel controller. The other connects to a microcontroller on the FP board.
Connectors related to the LCD are also included. The Display board consists of
the f
ollowing blocks:
Touch-panel controller
Rotary encoder (signal goes to the FP board)
Back light controller
Connector to LCD
2–4 AWG7000B and AWG7000C Series Service Manual
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