Agilent Technologies HP 8566B Spécifications télécharger pdf (Page 300)

18.

Module

Phase

Lock

Adjustments

Reference

RF-Section:

A6A9

Phase Lock

Description

The 3.3

GHz

Heterodyne Phase Lock Loop sampler circuits and 300

MHz Tripler circuits on the

A6A9

Phase Lock Assembly are adjusted

and checked for proper operation. The match between the Sampler

Driver circuit and the

A6A9Ul

Sampler is adjusted. Then, the output

balance of the

A6A9Ul

Sampler is set. A second spectrum analyzer is

used to adjust the output match between the Tripler circuit and the

300 MHz Power Amplifier. Tripler match is adjusted for maximum 300

MHz output signal with all harmonics more than 15

down.

Equipment

Spectrum Analyzer

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

HP 8566B

Digitizing Oscilloscope

.................................... HP

545OlA

Digital Voltmeter

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

HP 3456A

15x2 Extender Board (service accessory)

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

.08505-60041

BNC 50-ohm Termination

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

11593A

Cables:

BNC to SMB Cable

(service

accessory) . . . . . . . . . . . .

.85680-60093

Procedure

1. Set the spectrum analyzer LINE switch to STANDBY. Turn the

spectrum analyzer over to position the RF Section on top, as

shown in Figure 3-81, and remove the RF Section bottom cover.

2. In the RF Section, disconnect the cable 84 gray/yellow from

A6A12Jl

and the cable 82 (gray/red) from

A6A12J2.

Remove the

cover from the A6 RF Module, and then reconnect the cable 84

(gray/yellow) to

A6A12Jl

and the cable 82 (gray/red) to

A6A12J2.

Refer to Figure 3-82 for the location of the

A6A12

YTX Driver

Assembly and the A6 RF Module.

Sampler

Match

and

HET

Unlock

Detector

Delay

Adjustments

Caution

A6A9Ul

Sampler is very susceptible to damage from electrostatic

discharge (ESD). Be sure to use proper grounding techniques when

handling

A6A9

Phase Lock assembly and when disconnecting

and connecting cables to

A6A9J5

3.3

GHz

INPUT and test points

A6A9AlE5

and

A6A9AlE6.

3.160

Adjustments

1 2 ... 295 296 297 298 299 300 301 302 303 304 305 ... 404 405

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Agilent Technologies HP 8566B Spécifications Page 300

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