Dual Harmonic Auto Functions Menus - Ametek 7270 Instruction Manual

Chapter 5, FRONT PANEL OPERATION

5.6.08 Dual Harmonic Auto Functions Menus

5-88
on both X2 channel and Y2 channel output offsets.
OFFSET STATUS
This control allows the X2 channel and Y2 channel output offsets, set by the above
level controls, to be switched on to either or both outputs, or to be switched off. It
therefore has four settings, as follows:-
OFF
Both X2 channel and Y2 channel output offsets are switched off.
X2
The X2 channel output offset is switched on.
Y2
The Y2 channel output offset is switched on.
X2&Y2
Both X2 channel and Y2 channel output offsets are switched on.
AUTO OFFSET2
This control adjusts the X2 offset and Y2 offset values so that the X2 channel and
Y2 channel outputs are zero. 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.
Pressing the Previous Menu key returns control to the Output Offset Harm 1 Menu.
In dual harmonic mode, pressing a key adjacent to the Auto Functions item on Main
Menu 1 accesses the Auto Functions menu, shown in figure 5-67.
Figure 5-67, Auto Functions Menu - Dual Harmonic Mode
This menu is virtually identical to the normal single reference mode Auto Functions
menu, except that an additional key appears in the lower left-hand corner, marked
Harmonic2 menu or Harmomic1 menu. Each press of this key toggles the displayed
set of auto function controls between those applying to harmonic 1 and those
applying to harmonic 2.
Note that once these functions complete, the Auto Functions menu is replaced by the