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Front Panel Operation
Chapter 5
5-1
5.1 Introduction
This chapter describes how to operate the model 7220 using the front panel controls,
and describes its capabilities when used in this way. Chapter 6 provides similar
information in the situation where the unit is operated remotely using one of the
computer interfaces.
Readers should refer to chapter 4 for a detailed description of the use of the
SELECT and ADJUST keys, and the functions of the left and right-hand display
panels. However, for ease of use, some of this information is repeated here.
The model 7220 uses a flexible, menu based, control structure which allows many
instrument controls to be adjusted from the front panel with only a few keys.
Furthermore this design makes it very easy to introduce new features or improve
existing ones without the limitation resulting from a fixed front panel layout.
The following sections describe the instrument control menus in a logical sequence,
from the setup menus, which typically only need changing occasionally, through to
the output display selection.
5.2 Setup Menu Mode
When in the normal Main Display mode, two presses of the MENU key set the left
and right-hand displays to the setup menu mode, (see figure 5-1 which shows a
typical setup menu).
Figure 5-1, Setup Menu Mode - Left and Right-hand LCD Displays
In the setup menu mode, the left-hand SELECT keys of the left-hand display cycle
through a series of twelve setup menus. In general each menu allows three controls to
be adjusted, one via the right-hand side of the left-hand display and the other two via