Configuration Menu - Ametek 7280 Instruction Manual

Chapter 5, FRONT PANEL OPERATION
expand is switched off, the reference harmonic mode is set to 1, the X offset and Y
offset functions are switched off and the Auto-Sensitivity and Auto-Phase functions
are called. The Auto-Sensitivity function also adjusts the AC Gain if required.
The Auto-Measure function is intended to provide a means of setting the instrument
quickly to conditions which will be approximately correct in typical simple
measurement situations. For optimum results in any given situation, it may be
convenient to start with Auto-Measure and to make subsequent modifications to
individual controls.
NOTE: The Auto-Measure function affects the setting of the AC Gain and AC
Gain Automatic controls during execution. Consequently, it may not operate
correctly if the AC Gain Automatic control is turned off. In this case, better results
will be obtained by performing Auto-Sensitivity followed by Auto-Phase functions.
AUTO OFFSET
In an Auto-Offset operation the X offset and Y offset functions are turned on and are
automatically set to the values required to give zero values at both the X channel and
Y channel outputs. Any small residual values can normally be removed by calling
Auto-Offset for a second time after a suitable delay to allow the outputs to settle.
The primary use of the Auto-Offset is to cancel out zero errors which are usually
caused by unwanted coupling or crosstalk between the signal channel and the
reference channel, either in the external connections or possibly under some
conditions in the instrument itself. Note that if a zero error is present, the Auto-Offset
function should be executed before any execution of Auto-Phase.
AUTO DEFAULT
With an instrument of the design of the model 7280, where there are many controls
of which only a few are regularly adjusted, it is very easy to overlook the setting of
one of them. Consequently an Auto-Default function is provided, which sets all the
controls to a defined state. This is most often used as a rescue operation to bring the
instrument into a known condition when it is giving unexpected results. A listing of
the settings which are invoked by the use of this function can be found in appendix E.
Pressing the Previous Menu key returns control to Main Menu 1

5.3.13 Configuration Menu

When Main Menu 1 is displayed, pressing a key adjacent to the Configuration item
accesses the Configuration menu, which is shown in figure 5-16.
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