Layer 7 Layer 6 Layer 5 Layer 4 Layer 3 Layer 2
Analog I/O Functionality
Digital I/O Functionality
Resolution & Aliasing    Digital Inputs
Analog to Digital    Digital outputs
Digital to Analog
   Pulse I/O
Analog Signal Transmission    Presentation & Analysis
Analog Signal Types    Development Considerations
Noise & Grounding    Component Architectures
Wire & Cable Options
   Off-the-Shelf Offerings
Digital Signal Transmission    Data Aquisition Hardware
The OSI Network Model    Selecting a System
Physical Layer Options    Plug-in_Cards
Network Topologies    Standalone Components
Fieldbus & Device Networks
   Communication Devices
Recording, Printing, and Storage
Definitions and Classifications
Trend Recorders
Data Loggers
Videographic Recorders
Data Tables