HP 81200, User Manual, Page: 27 / 240

Operating Principles Introduction to the System
HP 81200 Data Generator/Analyzer Platform User Guide, Revision 2.1
27
Hardware and Setup Models
On power up, the system automatically checks and identifies the available
modules and frontends. It creates an image of the instrument configuration
and displays this image in the Connection Editor window.
The image of the DUT needs to be created. This can be done manually with
the Connection Editor or by loading a stored setting.
Instrument Configuration
The instrument configuration identifies all the available modules,
frontends (there are generator and analyzer frontends), and frontend
connectors.
Refer to “Frontends” on page 22 for the available frontends.
A connector represents an output or input connector of the module.
Differential outputs are counted as one channel.
A channel represents the circuitry behind a connector.
A channel is identified by Cx–My–Cz
(ClockgroupNumber–ModuleNumber–ConnectorNumber).
DUT Configuration
The image of the DUT is constructed from a template. The HP 81200
system includes a general DUT template.
The general DUT template provides two types of ports :
• Data port
This provides the capability to define data to be sent or analyzed. Data is
handled in the form of segments. Two major data segment types are
available, memory-based or PRBS/PRWS. Sequences of segments can be
repeated and triggered on events. Individual pulse parameter settings
are also possible.
A data port is usually an input or output bus.
• Pulse port
Like traditional pulse generators, this port provides an easy way to have
a pulse generated without the need to set up any data. Also, clock
signals or dc signals can be set up.
Ports are added for each group of pins with the same behavior or which
can be treated in the same way in the DUT.
Ports consist of terminals . These are the DUT pins that must be
connected to the physical connectors of the system’s generator or analyzer
channels.