Theory of Operation
WFM700 Series Waveform Monitors Service Manual 1-9
CPU Board
Second Input slot
Power Supply Module
Audio Module
Main Interface Board
Reference Module
RTD Module
Input Module
Mezzanine Board HD/SD Input Board
VGA MUX
LCD
Panel
Front panel controls
and touch screen
VGA
Controller
Main Power
Supply
Housekeeping Supply
Power Relay
Environmental
Controller “EC”
On-Off
Serial Bus
Multiplexer
Measurement
Processing
Logic Devices
Polyphase
Interpolator
Rasterizer
Recursive and
Pix Processing
PCI
Interface
Fast Static
Memory
SDRAM
TRS Generation and control
RS232
RS232
PLD PCI
Interface
FPGA for Full-Speed
Data Massaging
Serial Control Bus
PCI Bus
Audio Bus
I/O
Buffers
RAM
PCI
Interface
Hardware Processing
AES Receivers, Rate Converters,
FPGA
DSP 0
Bars, Control
DSP 1
Bars, Lissajous
Control
Control
Figure 1- 2: Control flow block diagram
