Output Offset & Expand Menu - Ametek 7124 Instruction Manual

Chapter 5, FRONT PANEL OPERATION
5.3.07 Output Offset & Expand Menu
5-14
settings are available.
FAST
In this setting, the analog outputs are derived directly from the core FPGA
running the demodulator algorithms. The update rate is increased to 1.0 MHz
when the time constant is set to any value from 10 µs to 500 ms but remains at
1 kHz for longer time constants. The output filter slope is restricted to either 6 or
12 dB/octave.
Pressing the Previous Menu key returns control to Main Menu 1.
When Main Menu 1 is displayed, pressing a key adjacent to the Offset & Expand
item accesses the Offset & Expand menu, which is shown in figure 5-10.
Figure 5-10, Output Offset & Expand Menu
The Offset & Expand menu has five controls affecting the instrument's X channel
and Y channel outputs. Changes to the setting of these controls can be made by using
the adjacent keys, with the currently active selection being highlighted.
X OFFSET and Y OFFSET
These controls, which duplicate the Main Display X OFFSET and Y OFFSET controls,
allow manual adjustment of the X channel and Y 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 X channel or Y channel output when the X channel or Y
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 function, which also switches on
both X channel and Y channel output offsets.
OFFSET STATUS
This control allows the X channel and Y 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:-
NONE
Both X channel and Y channel output offsets are switched off.