Dual Reference And Dual Harmonic Modes Dac Menu - Ametek 7270 Instruction Manual

Dsp lock-in amplifier
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Chapter 5, FRONT PANEL OPERATION
Figure 5-57, Curve Select Menu - Fast Mode
For the standard mode, this menu is used to select the instrument outputs that will be
stored when data acquisition to the curve buffer is initiated. The possible data types
(outputs) that can be stored to the curve buffer are shown on the upper part of the
screen. Controls allow between one and all of these data types to be selected for
storage, with those that are selected being indicated by being shown in highlighted
text.
MOVE POINTER
This control allows the selection box to be moved to any one of the possible data
types. The
,
,
and
cursor-movement keys can be also be used to do this.
ENTER SELECTION / CLEAR SELECTION
If the data type highlighted by the box is not selected, then pressing this key causes it
to be selected, as indicated by its being displayed in white text. If it is already
selected, then pressing the key deselects it.
As indicated in figure 5-57, when the buffer is used in fast mode, eight output values
are stored and there is no provision for changing these.

5.5.12 Dual Reference and Dual Harmonic Modes DAC Menu

When in dual reference or dual harmonic modes, the DAC menu, accessed via Main
Menu 2, changes to that shown in figure 5-58.
5-73

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