Output Offset Harm 1 Menu - Ametek 7280 Instruction Manual

reference frequency period.
ON
In this setting, the actual time constant used is chosen to be some multiple of the
reference frequency period, giving a much more stable output at low frequencies
than would otherwise be the case. Note that, depending on the reference
frequency, output time constants shorter than 100 ms cannot be used.
Pressing the Previous Menu key returns control to Main Menu 1.

5.6.05 Output Offset Harm 1 Menu

In dual harmonic mode, when Main Menu 1 is displayed, pressing a key adjacent to
the Output Offset & Expand item accesses the Output Offset Harm 1 menu, which is
shown in figure 5-52.
The Output Offset Harm 1 menu has three controls affecting the instrument's
X1 channel and Y1 channel outputs and a key to access a further sub-menu which has
corresponding controls for the X2 channel and Y2 channel. Changes to the setting of
these controls can be made by using the adjacent
active selection being highlighted.
X1 OFFSET and Y1 OFFSET
These controls, which duplicate the Main Display X1 OFFSET and Y1 OFFSET
controls, allow manual adjustment of the X1 channel and Y1 channel output offsets.
The offset level set by the controls, which can be any value between -300% and
+300% in 0.01% steps, is added to the X1 channel or Y1 channel output when the X1
channel or Y1 channel offset is switched on. Adjustment is faster using the Keypad
or Active Cursor controls - see section 4.1.04.
The values are set automatically by the Auto-Offset 1 function, which also switches
on both X1 channel and Y1 channel output offsets.
Chapter 5, FRONT PANEL OPERATION
Figure 5-52, Output Offset Harm 1 Menu
keys, with the currently
5-83