Output Offset & Expand Menu - Ametek 7280 Instruction Manual

channel output filters. Changes to the setting of these controls can be made by using
the adjacent
TIME CONSTANT
This control, which duplicates the Main Display TIME CONSTANT control, is used to
set the time constant of the output filters.
SLOPE
The roll-off of the output filters is set, using this control, to any value from 6 dB to
24 dB/octave, in 6 dB steps. Note that there are some restrictions in that it is not
possible to select 18 or 24 dB/octave settings at Time constants of 1 ms or shorter.
SYNC TIME CONSTANT
This control has two settings, as follows:-
OFF
In this setting, which is the normal mode, time constants are not related to the
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.
5.3.07 Output Offset & Expand Menu
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 5-9.
Chapter 5, FRONT PANEL OPERATION
keys.
Figure 5-9, Offset & Expand Menu
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