Theory of Operation
Multi-Input/Output (MIO)
Board
The MIO board co
ordinates the flow of data through the Windows PCIe port (PCI
port for AWG7000B series) from various devices that communicate with the
μATX s ystem. The d evices include the display s ystem, GPIB, TekLink, and data
flow (PCIF) path to the waveform generator system. An EEROM on this board
stores the instrument settings and calibration data. The MIO board consists of
the following blocks:
PCI controller
GPIB controller
Display controller
NOTE. For AWG7000B Series instruments with serial numbers below B020000,
the ATI Mobility-MI circuit was included in the MIO board. For AWG7000B
Series instruments with serial numbers B020000 and above, a separate display
adapter
board (ADD2) performs this function.)
For AWG7000C Series instruments, the Processor board provides the video
displa
y output.
PCI target adapter
PLD140 (Xilinx FPGA)
EEPROM for calibration data storage
TekLink interface
Display Adapter (ADD2)
Board (AWG7000B Series)
The
ADD2 board contains LCD display control circuitry that p rocesses video
signals from the MIO board.
Th
e Display Adapter board is used with AWG7000B Series instruments serial
numbered B020000 and above. This circuitry formerly resided on the MIO board.
Front Switch (FSW) Board
The FSW board provides interconnection between the Standby switch and μAT X
b
oard. It includes an LED driver.
Front Connector (FCON)
Board
The FCON board provides front-panel connections of the USB ports and the
DC output. It includes common mode filters that suppress EMI radiation on the
USB signal.
AWG7000B and AWG7000C Series Service Manual 2–5
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