Using Spectrum Analyzer Features

Using limit-line Functions

Item

Description of Items in Figure 3-6

1Frequency and amplitude coordinate that starts the first segment.

2 First segment.

3 Frequency and amplitude coordinate that starts the second segment.

4 Second segment.

5 Frequency and amplitude coordinate that starts the third segment.

6Third segment.

1Frequency and amplitude coordinate that starts the fourth segment.

8Fourth segment.

9Frequency and amplitude coordinate that starts the fifth segment.

IO Fifth segment.

11 Frequency and amplitude coordinate that starts the sixth segment.

Selecting the Frequency or Press SELECT FREQ , then enter a frequency value, or press SELECT TIME

Time Coordinateand enter a time value, for the segment. Regardless of the table format, a frequency/time coordinate must be specified.

Limit line coordinates may be entered in terms of either frequency and amplitude, or time and amplitude. Press LIMITS FRQ TIME until the desired choice of either frequency or time has

be selected (underlined). If TIME has been selected as the limit line parameter SELECT TIME

will replace SELECT FREfJ in the Edit Limit menus.

Selecting the Amplitude In the previous procedure, pressing SELECT AMPLITUD and then entering an

Coordinateamplitude value, specified the amplitude coordinate for the upper limit line. The limit-line table formats dictate how the amplitude values are treated:

•With the upper limit-line table format, one amplitude component (representing an upper limit-line segment) is specified per frequency/time component. The amplitude value is entered by pressing SELECT AMPLITIJD , entering an amplitude value, and pressing a units key.

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