Agilent Technologies E8285A Manual page 27

Introduction
Test Set Description
Some of these functions are directly replaceable assemblies (such as the
spectrum analyzer); some functions are digitally derived from other
assemblies (such as the oscilloscope). Most of the replaceable
assemblies are plug-in components.
Most instrument functions can be controlled by front-panel (local)
controls and by remote commands (using a connected controller). Power
on/off, volume, and squelch controls cannot be accessed remotely.
Controls are grouped together on display screens that are usually
associated with a specific task (such as making a call to a CDMA mobile
phone).
An Instrument BASIC (IBASIC) controller is also built into the Test Set
to allow automated operation without using an external controller. This
computer also has the ability to be a system controller to other test
system instruments. Refer to the Test Set's user's guide for information
on using the IBASIC computer (also referred to as the IBASIC
controller).
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