Agilent Technologies HP 8566B Spécifications télécharger pdf (Page 338)

2 1. Frequency Response Adjustments

Note

A6AlO

Miscellaneous Bias/Relay Driver Assembly is HP P/N

85660-60322 (HP 85660AB RF Sections with serial number prefix

2747A or above), and

A6AlOR27

GD does not have sufficient range,

change the value of factory-select component

A6AlOR88.

Increase

the value of

A6AlOR89

to decrease the signal level, and decrease the

value of

A6AlOR89

to increase the signal level. See

Table

3-3 for the

acceptable range of values for

A6AlOR89,

and

Table

3-4 for HP part

numbers. See Figure 3-90 for the location of

A6AlOR89.

Band

18.6

GHz

141. On the spectrum analyzer, key in

C-J,

LSHIFT)

[PRESEL

PEAK]

GHz

(-1

TRACE A

(MAX]

Set the spectrum analyzer

controls as follows:

START FREQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18.6

GHz

STOP FREQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.22

GHz

RES BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

MHz

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

LOG SCALE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 dB/DIV

SWEEP TIME

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 ms

142. On the synthesized sweeper, key in

Icw

20.0

GHz.

Note

The POWER LEVEL of the synthesized sweeper should still be leveled

to a calibrated -10.00

dBm

at 100 MHz at the spectrum analyzer RF

INPUT from step 55.

143.

Adjust 22-turn (IF Offset) potentiometer

A6A12R82

E and

17-turn (YTX Bias) potentiometer

A6AlOR9

VE for maximum

signal amplitude at 20.0

GHz

on the spectrum analyzer display.

See Figure 3-90 for the locations of

A6A12R82

E and

A6AlOR95

VE.

144.

On the spectrum analyzer, key in MARKER

@?ZiZiJ,

MARKER [PEAK SEARCH] to position a marker at the peak of

the displayed 20.0

GHz

signal. Adjust Ill-turn (Band E Step

Gain) potentiometer

A6AlOR29

GE as necessary to adjust the

amplitude of the displayed 20.0

GHz

marker to -10.00

dBm

fO.10

dB.

Adjust

A6AlOR29

GE counterclockwise to increase

the signal level, and clockwise to decrease the signal level.

A6AlOR29

GE does not have sufficient range, adjust the

amplitude of the displayed 20.0

GHz

marker as close as possible

to -10.00

dBm.

See Figure 3-90 for the location of

A6AlOR29

GE.

145.

On the spectrum analyzer, key in LOG SCALE

ENTER

dB/Dw]

dB, MARKER (NORMAL).

146.

Readjust 22-turn (IF Offset) potentiometer

A6A12R82

E as

necessary to maximize the amplitude of the 20.0

GHz

signal on

the spectrum analyzer display.

147.

Set the synthesized sweeper controls as follows:

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

.18.6

GHz

STOP FREQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.22.0

GHz

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

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

3-199 Adjustments

1 2 ... 333 334 335 336 337 338 339 340 341 342 343 ... 404 405

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Agilent Technologies HP 8566B Spécifications Page 338

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