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13. Press MARKER Ia] and position movable marker at the lowest
the
point on
trace (see Figure 2-30). Read the MARKER A
amplitude from the display and record its absolute value.
MARKER A amplitude = p-p amplitude =
14. Divide the peak-to-peak amplitude by the slope computed in step
8 to obtain the residual FM:
p-p amplitude/filter slope = residual FM
= residual FM
The residual FM should be less than 3 Hz.
15. Press
16. Press Cm] 9 and adjust FREQ ZERO for a maximum amplitude
trace.
16. Residual FM Test
Hz
Performance Tests 2-59
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