Auto Functions Menu - Ametek 7280 Instruction Manual

CONTINUE
Pressing the adjacent
present amplitude. The control changes to PAUSE
Note that if the oscillator frequency sweep (see section 5.3.10) is also armed then the
controls that start, pause, continue and stop on the Amplitude Sweep menu will also
control the frequency sweep. Similarly, if the amplitude sweep is linked to the curve
buffer then the frequency sweep will be as well.
Pressing the Previous Menu key returns control to the Oscillator Menu.

5.3.12 Auto Functions Menu

When Main Menu 1 is displayed, pressing a key adjacent to the Auto Functions item
accesses the Auto Functions menu, which is shown in figure 5-15
This menu has five controls for activating the auto functions built into the instrument.
Note that once these functions complete, the Auto Functions menu is replaced by the
Main Display. The functions operate as follows:-
AUTO SENSITIVITY
This function only operates when the reference frequency is above 1 Hz. A single
Auto-Sensitivity operation consists of increasing the full-scale sensitivity range if the
magnitude output is greater than 90% of full-scale, or reducing the range if the
magnitude output is less than 30% of full-scale. After the Auto-Sensitivity function is
called, Auto-Sensitivity operations continue to be made until the required criterion is
met.
In the presence of noise, or a time-varying input signal, it may be a long time before
the Auto-Sensitivity sequence comes to an end, and the resulting setting may not be
necessarily what is really required.
Chapter 5, FRONT PANEL OPERATION
key restarts the paused amplitude sweep from the
Figure 5-15, Auto Functions Menu
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