Agilent Technologies HP 8566B Especificaciones descargar pdf (Pagina 327)

2 1. Frequency Response Adjustments

70. Set the synthesized sweeper controls as follows:

START FREQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.2.0

GHz

STOP FREQ

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.8

GHz

RF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . on

LEVELING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .XTAL

SWEEP TIME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.30

SWEEP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CONT

71. On the spectrum analyzer, key in TRACE A [CLEAR-WRITE),

CSWEEP

TIME]

2s,

MARKER (OFF),

IHOLD).

As the spectrum

analyzer completes each sweep, a series of approximately 22 new

responses should be displayed, as shown in Figure 3-95. The

peaks of these responses coarsely outline the spectrum analyzer

frequency response.

Figure 3-95.

Typical Coarse Frequency Response (2

GHz

5.8

GHz)

72. Gradually adjust (Band B Lower Segment)

A6AllR51

and

(Band B Upper Segment)

A6AllR69

B2 for maximum flatness of

the displayed signal responses. The adjustments are interactive,

with

A6AllR51

Bl having the most effect on the level of the

displayed signals below mid-band (approximately 3.9

GHz),

and A6AllR69 B2 having the most effect on the level of

the displayed signals above mid-band. Adjust

A6AllR51

counterclockwise to increase the level of the displayed signal

responses below mid-band. Adjust A6Al

lR69

B2 clockwise

to increase the level of the displayed signal responses above

mid-band. See Figure 3-90 for the locations of A6AllR51

and

A6Al

lR69

B2.

Note

It might be helpful to increase or decrease the spectrum analyzer

[SWEEP

TIME) setting while adjusting A6AllR66 B2 and A6AllR48 Bl,

particularly when making fine adjustments. An increase in spectrum

analyzer sweep time results in closer spacing of the displayed

responses, but slows the adjustment.

Adjustments 3-187

1 2 ... 322 323 324 325 326 327 328 329 330 331 332 ... 404 405

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Agilent Technologies HP 8566B Especificaciones Pagina 327

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