Agilent Technologies HP 8566B Spécifications télécharger pdf (Page 291)

29.

Set the controls of the second spectrum

anaiyzer

as follows:

CENTER FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . 165 MHz

FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.15

MHz

RES BW

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

kHz

REFERENCE LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -7

dBm

LOG SCALE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.I0

dB/DIV

MARKER

. . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . OFF

30.

Press

QNSTR

PRESET) on the synthesized sweeper, and key in

330.3 MHz, (POWER LEVEL) 0

dBm.

31.

Use a second BNC to SMB Snap-on Test Cable and an SMB adapter

to connect the cable 4 (yellow) from AlOA3Jl IN 200-300 MHz to

the RF OUTPUT of the synthesized sweeper.

32.

Set the RF Section LINE switch to ON, and key in

L-j,

(CENTER FREQUENCY) 42.57 MHz, (FREQUENCY SPAN) 0 Hz.

17.

20130

Loop Phase Lock Adjustments

Note

Adjustments

AlOA3Lll

165 MHz NULL,

AlOA3L12

160 MHz NULL,

and

AlOA3L13

170 MHz NULL are sealed at the factory and normally

do not require readjustment unless a component failure has occurred.

verify their proper adjustment, skip to step 39.

33.

34.

35.

36.

37.

38.

39.

40.

41.

Adjust

AlOA3Lll

165 MHz NULL,

AlOA3L12

160 MHz NULL, and

AlOA3L13

170 MHz NULL fully clockwise.

Adjust AlOA3Ll3 170 MHz NULL to minimize the amplitude of

the 170 MHz signal displayed on the second spectrum analyzer.

Refer to Figure 3-78 for the location of

AlOA3L3

170 MHz NULL

adjustment.

On the synthesized sweeper, key in Icw) 325.3 MHz.

Adjust

AlOA3Lll

165 MHz NULL to minimize the amplitude of

the 165 MHz signal displayed on the second spectrum analyzer.

Refer to Figure 3-78 for the location of

AlOA3Lll

165 MHz NULL

adjustment.

On the synthesized sweeper, key in Icw) 320.3 MHz.

Adjust

AlOA3L12

160 MHz NULL to minimize the amplitude of

the 160 MHz signal displayed on the second spectrum analyzer.

Refer to Figure 3-78 for the location of

AlOA3L12

160 MHz NULL

adjustment.

On the synthesized sweeper, key in Icw] 260.3 MHz.

On the second spectrum analyzer, press [CENTER FREQUENCY) 100

MHz

CFREQUENCY

SPAN

)

6 MHz MARKER

(PEAK

)

to position a

marker on the peak of the displayed 100 MHz signal, and verify

that the output power level of the

PLLl

IF is at least -14

dBm.

If it is not, a lower

value

can be selected for factory-select

component

AlOA3C26

to improve the impedance match between

the double-balanced mixer

AlOA3Ul

and the IF Input Amplifier

circuit on

AlOA3

PLLl

IF Assembly. Refer to Table 3-3 for the

acceptable range of values for

AlOA3C26,

and to

Table

3-4 for HP

part numbers; refer to Figure 3-78 for the location of

AlOA3C26.

On the synthesized sweeper, key in [START

FREQ]

300.3 MHz.

Adjustments 3-151

1 2 ... 286 287 288 289 290 291 292 293 294 295 296 ... 404 405

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Agilent Technologies HP 8566B Spécifications Page 291

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