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Figure 2-28. Bandwidth Filter Slope Measurement
8. Compute the detection slope of the 30 Hz filter between the
markers by dividing the MARKER A amplitude by the MARKER A
frequency:
filter slope = MARKER A amplitude/MARKER Afrequency =
9. Press SWEEP [CONT),(mj IOFF).
10. Change
SPAN
necessary, to position the trace at the center graticule line. The
amplitude variations of the trace (see Figure 2-29) represent the
analyzer residual FM.
16. Residual FM Test
to 0 Hz. Readjust FREQ ZERO, if
]
P e r f o r m a n c e T e s t s 2-57
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