Agilent Technologies HP 8566B Especificaciones descargar pdf (Pagina 312)

20. Last Converter Adjustments

15. Move the probe to the access hole above

A6A3AlC8

(the

rightmost access hole). Adjust A6A3AlC9 (second access hole

from the right) to minimize the amplitude of the 321.4 MHz signal

displayed on the second spectrum analyzer.

16. With the probe still in the access hole above

A6A3AlC8,

adjust

A6A3AlClO

(center access hole) to maximize the amplitude of the

32 1.4 MHz signal displayed on the second spectrum analyzer.

17. Adjust

A6A3AlCll

(second access hole from the left) to minimize

the amplitude of the 321.4 MHz signal displayed on the second

spectrum analyzer.

18. Adjust

A6A3AlC12

(left-most of the five access holes) to maximize

the amplitude of the 321.4 MHz signal displayed on the second

spectrum analyzer.

19. Remove the probe from the access hole above

A6A3AlC8,

and

disconnect the probe from the BNC to SMB snap-on test cable.

Use the BNC to SMB snap-on test cable to connect the RF INPUT

of the second spectrum analyzer to A6A3J3 (21.4 MHz OUT).

20. Set the spectrum analyzer controls as follows:

CENTER FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.7 MHz

FREQUENCY SPAN

. . . . . . . . . . . . . . . . . . . . . . . . .500

kHz

REFERENCE LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30 dBm

21. On the synthesized sweeper, key in

Icw)

310.7 MHz, [POWER LEVEL]

-40

dBm.

22. Locate the 10.7 MHz Notch Filter adjustment, visible through the

remaining unlabeled access hole near the center of the bottom

cover of the

A6A3

Last Converter Assembly (refer to Figure 3-88).

Adjust A6A3AlC23 to minimize the amplitude of the 10.7 MHz

signal displayed on the second spectrum analyzer.

23. Set the RF Section LINE switch to STANDBY.

24. Disconnect the synthesized sweeper from A6A3Jl 321.4 MHz IN.

Disconnect the second spectrum analyzer from A6A3J3 (21.4 MHz

OUT).

Disconnect cable 2 (red) from

A6A3J2

300 MHz IN.

25. Disconnect cable 2 (red) from

A6A9Jl

300 MHz OUTPUT and

cable 85 (gray/green) from

A6A9J3

100 MHz INPUT. Remove the

A6A9

Phase Lock Assembly, the

A6AlO

Miscellaneous Bias/Relay

Driver Assembly, the

A6All

Slope Generator Assembly, and the

A6A12

YTX Driver Assembly from the RF Section.

26. Reinstall the

A6A3

Last Converter Assembly in the RF Section,

and replace the two screws attaching the

A6A3

Last Converter

Assembly to the RF Section chassis. Replace the RF Section right

side cover.

27. Reconnect cable 1 (brown) to

A6A3Jl

321.4 MHz IN, cable 2 (red)

A6A3J2

300 MHz IN, and cable 81 (gray/brown) to

A6A3J3

(21.4 MHz OUT) on the

A6A3

Last Converter Assembly.

28. Reinstall the

A6A9

Phase Lock Assembly, the

A6AlO

Miscellaneous Bias/Relay Driver Assembly, the

A6All

Slope

3-172 Adjustments

1 2 ... 307 308 309 310 311 312 313 314 315 316 317 ... 404 405

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