IBM 7220, Instruction Manual

Page: 57 / 155

5-17
Chapter 5, FRONT PANEL OPERATION
5.2.12 Control Setup Menu
Figure 5-13, Control Setup Menu
The final setup menu, shown in figure 5-13, is used to set the instrument to a known
state and to adjust the sampling rate of the main analog to digital converter.
Default Setting
Pressing a key adjacent to this label will set all of the instrument’s controls to a
known state. This can be useful when performing the initial checks procedure, or after
taking the instrument over from another user. Note that on completion, the instrument
will leave the setup menu mode and revert to the main display mode. A listing of the
settings invoked by the use of this function can be found in appendix F.
Caution
The default setting includes controls affecting the RS232 and GPIB interfaces, so
these will need to be readjusted following use of this function unless you have used
their default settings.
Sample rate
This control adjusts the sampling rate of the instrument’s main ADC, offering four
possible settings. It should only be necessary to use it if you suspect that an
interfering signal is being aliased into the instrument’s output.