HP 8568B Manual de usuario descargar pdf (Pagina 293)

9. Impulse Bandwidth Adjustments

13. Using the DATA knob, adjust the marker down one side of

the display signal to the 7.3

point; CRT MKR A annotation

indicates 0.430 X.

A4A9

IF CONTROL

Figure 4-8. Location of Bandwidth Adjustments

14. Adjust

A4A9R61

1 MHz for MKR A indication of 500 kHz while

maintaining the marker at 0.430 X using the DATA knob. Refer to

Figure 4-8 for the adjustment location.

15. Press MARKER

Adjust marker to the opposite side of the

signal (CRT MKR A annotation indicate 1.00 X). There are now

two markers; one on each of the signal at the 7.3

point.

16. The CRT MKR A annotation now indicates the impulse bandwidth

of the 1 MHz bandwidth. The impulse bandwidth should be 1.00

MHz

fO.10

MHz.

17. Key in

(jjj

300 kHz, (FREQUENCY SPAN) 500

kHz,

CPEAK

SEARCH), and

CMKR].

If necessary, readjust by pressing

[REFERENCE LEVEL]] and using the DATA knob to place the

signal peak at the top of the graticule.

18. Press MARKER

IOFF]

then MARKER

19. Using the DATA knob, adjust the marker down one the displayed

signal to the 7.3

point; CRT MKR A annotation indicates 0.430

20. Adjust

A4A9R62

300 kHz for MKR A indication of 150 kHz while

maintaining marker at 0.430 X using the data knob. Refer to

Figure 4-8 for location of adjustment.

21. Press MARKER

Ia].

Adjust the marker to the 7.3

point on the

opposite side of the signal (CRT MKR A annotation indicates 1.00

Xl*

22. The CRT MKR A annotation now indicates the impulse bandwidth

of the 300 kHz bandwidth. The impulse bandwidth should be

300.00

h30.00

kHz.

23. Key in

@EYEiT)

10 kHz, [FREQUENCY SPAN] 20 kHz, [PEAK SEARCH),

and

C-1.

If necessary, readjust by pressing

4-28 Option 462

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HP 8568B Manual de usuario Pagina 293

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