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Functional Terms
The devices of a modular system may be combined in such a way to allow them to
communicate and operate as an instrument. The following terms identify the interrelationship
among devices within a modular instrument.
m Element: Any device that communicates over the Hewlett-Packard Modular System
Interface Bus (HP-MSIB), for example, the HP 70902A IF section. In contrast, the
HP 70001A Mainframe controls all HP-MSIB communication, but does not communicate
over the HP-MSIB and therefore is not an element.
m Master:
A module that controls other modules.
w Sub-Master:
An element that other elements control and simultaneously controls other
elements.
m Slave: A module that another module controls.
m Independent element: An element that is neither a master nor a slave (for example, the
HP 70205A Graphics Display).
m Instrument: A module, or group of modules, that performs an independent function (for
example, the HP 71100C Spectrum Analyzer).
Structural Terms
Modular systems consist of hardware structures dedicated to specific functions. The structural
terms used in reference to these functions are described below.
m Mainframe:
A mainframe is the device into which plug-in modules may be installed to
create an instrument such as a modular measurement system.
= Module: Modules are devices that plug into a mainframe. They cannot function without a
mainframe.
m Stand-Alone Instrument: An HP-MSIB element capable of performing its functions without
a mainframe (for example, the HP 70206A System Graphics Display).
Display Description
The HP 70205A Graphics Display (a 3/8-width module} and HP 70206A System Graphics
Display (a free-standing instrument with a 9-inch CRT) are menu-driven human interfaces for
the HP 70000 Modular Measurement System. They display system configuration information,
measurement results, text, graphics, and include built-in trace and marker capabilities.
Softkeys are used to establish an interactive front panel for any modular instrument.
The HP 70206A System Graphics Display may be stacked or racked with the HP 70001A
Mainframe.
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General Information
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