Specifications
209
Glossary
work with it. Usually used to mean
the specific system and tools you are
working with right now.
MAC layer The Medium Access
Control layer is one of two layers that
make up the Data Link Layer of the
OSI Reference Model. The MAC layer
is responsible for moving data
packets to and from one Network
Intercafe Card (NIC) to another
across a shared channel.
machine Some logic analyzers allow
you to set up two measurements at
the same time. Each measurement is
handled by a different machine. This
is represented in the Workspace
window by two icons, differentiated
by a 1 and a 2 in the upper right-hand
corner of the icon. Logic analyzer
resources such as pods and trigger
terms cannot be shared by the
machines.
markers Markers are the green and
yellow lines in the display that are
labeled x, o, G1, and G2. Use them to
measure time intervals or sample
intervals. Markers are assigned to
patterns in order to find patterns or
track sequences of states in the data.
The x and o markers are local to the
immediate display, while G1 and G2
are global between time correlated
displays.
master card In a module, the
master card controls the data
acquisition or output. The logic
analysis system references the
module by the slot in which the
master card is plugged. For example,
a 5-card Agilent Technologies 16555D
would be referred to as Slot C:
machine because the master card is
in slot C of the mainframe. The other
cards of the module are called
expansion cards.
menu bar The menu bar is located
at the top of all windows. Use it to
select File operations, tool or system
Options, and tool or system level
Help.
message bar The message bar
displays mouse button functions for
the window area or field directly
beneath the mouse cursor. Use the
mouse and message bar together to
prompt yourself to functions and
shortcuts.
module/probe interconnect cable
The module/probe interconnect cable
connects an E5901B emulation
module to an E5900B emulation
probe. It provides power and a serial
connection. A LAN connection is also
required to use the emulation probe.
module An instrument that uses a