User Settings Menu - Ametek 7280 Instruction Manual

Chapter 5, FRONT PANEL OPERATION
As in single graph mode, there is no facility for adjusting the x-axis scale, which
always shows up to 243 points. Furthermore both the upper and lower curves are
shown over the same range of points; it is not possible, for example, to show Curve 1
for data points 1 to 243 and Curve 2 for points 243 to 486.
Curve Selection keys
The keys on the top right-hand side of the display are used to select the curve to be
shown in the upper half of the display, Curve 1, from those stored in the curve buffer.
The lower-middle right-hand keys perform an equivalent function for Curve 2, which
is shown in the lower half of the display. All curves that can be stored may be
selected for display, except for EVENT and the curve recording instrument
sensitivity settings.
START/STOP/PAUSE/CONT. keys
In the single graph display mode, acquisition to the curve buffer, and hence display
of data, can be initiated using the Start or Loop keys. The Start keys start
acquisition in the one-shot mode. This causes data to be acquired for the number of
points specified by the curve length control in the Curve Buffer menu and once
complete, acquisition ceases. During data acquisition, the control key annotation
changes to Pause; if pressed again, acquisition will pause at the current data point and
the annotation changes again to Cont. (Continue). If the key is pressed again
acquisition continues from the present data point.
The Loop keys also start data acquisition, but in the loop mode, in which the curve
buffer fills to capacity and is then sequentially overwritten by new data. Once this
mode is running, the Loop control key annotation changes to Stop, and pressing the
adjacent key will then stop acquisition at the present data point.
CURSOR keys
As with the single graph mode, the bottom right-hand keys and the and
cursor-movement keys control the position of the cursor. The current point number is
displayed in the bottom right-hand corner of the display and the value of the curves at
their intersection with the cursor appear above the relevant Curve 1 and Curve 2 data
types. Where applicable, values are always given as a percentage of full-scale, since
there is no facility to display them in floating-point format. If the cursor is moved
fully to the left then the displayed data scrolls to the right in groups of ten points,
allowing earlier data to be shown.
Pressing the Previous Menu key exits the Double Graph menu and returns to Main
Menu 2.

5.3.26 User Settings Menu

When Main Menu 2 is displayed, pressing a key adjacent to the User Settings item
accesses the User Settings menu, which is used to save and recall up to eight
complete instrument settings from memory. This feature is particularly useful when a
number of users share an instrument since it allows each user to quickly reset the
instrument to a known setting.
When the menu is first displayed, the Memory keys on the display are not shown.
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