Stanford Research Systems SR780, Руководство по эксплуатации и программированию

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Limit Testing 1-61
Press [9] [0] [0] [0] [0] [Enter]
Enter a value of 90000 Hz.
Press <Y1> Select Y1.
Press [-] [8] [0] [Enter]
Enter a value of -80 dBVpk.
The segment should be above the noise floor. The
limit test should still pass.
6. Press <Segment#>
Change the segment which we are editing. The
current segment is identified in the order in which
they are created.
Press [0] [Enter]
Select segment 0 (the first one). Before editing a
segment, make sure that you have chosen the
correct one. The current segment is identified in the
display by two additional arrows at the endpoints
and its endpoint coordinates are displayed in the
menu.
Press <Limit Type>
Select the Limit Type for segment 0.
Use the knob to select (Lower) and press
[Enter].
Change the limit to a lower limit.
The limit test now fails since data falls below the
segment.
Press <Return> Return to the Limit Testing menu.
Press <Limit Beep>
Select Limit Beep.
Use the knob to select (On) and press [Enter].
On enables the audible alarm. This alarm alerts you
to limit test failures.
7. Press [Display Setup]
Select the Display Setup menu.
Press <Measurement> Change the Measurement.
The limit segments are defined for the current
measurement, view and units. Changing any of
these parameters turns limit testing off.
The Limit Testing and Beep are turned off since the
limit segments we defined have no meaning for this
measurement.