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13. Using the DATA knob, adjust the marker down one side of the
display signal to the 6 dB point; CRT MKR A annotation indicates
I F C O N T R O L
\
Figure 4-7. Location of Bandwidth Adjustments
14. Adjust A4A9R61 1 MHz for MKR A indication of 500 kHz while
maintaining the marker at 0.500 X using the DATA knob. Refer to
Figure 4-7 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 6 dB point.
16. The CRT MKR A annotation now indicates
the 1 MHz bandwidth filter. The 6 dB bandwidth should be 1.00
MHz *O.lO MHz.
17. Key in
300 kHz,
and C-1. If necessary, readjust by pressing
[
),
PEAK SEARCH
[REFERENCE LEVEL]] and using the DATA knob to place
signal peak at the top of the graticule.
18. Press MARKER m then MARKER (iYJ
19. Using the DATA knob, adjust the marker down one the displayed
signal to the 6 dB point; CRT MKR A annotation indicates .500 X.
20. Adjust A4A9R62 300 kHz for MKR A indication of 150 kHz while
maintaining marker at .500 X using the data knob. Refer to
Figure 4-7 for location of adjustment.
21. Press MARKER In]. Adjust the marker to the 6 dB point on the
opposite side of the signal (CRT MKR A annotation indicates 1.00
22. The CRT MKR A annotation now indicates the bandwidth of the
300 kHz bandwidth filter. The bandwidth should be 300.00 f30.00
23. Key in (
10 kHz,
and (MK
peak near the top of the graticule.
9. 6 dB Resolution Bandwidth Adjustments
I
~000000000000000000 n 000000000000000000 r
the
500 kHz,
)
SPAN
20 kHz,
(
FREQUENCY
6 dB bandwidth of
the
[
),
PEAK SEARCH
Option 462 4-25
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