Filter
Top Products
9. 6
dB
Resolution Bandwidth Adjustments
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
.500 x.
A4A9
N
f’
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I
1
N
N
IF CONTROL
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A4A9
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 6
dB
bandwidth of
the 1 MHz bandwidth filter. The 6
dB
bandwidth should be 1.00
MHz
*O.lO
MHz.
17. Key in
(RES)
300
kHz,
~FREQUENCY
SPAN) 500
kHz,
[PEAK SEARCH), and
C-1.
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
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
Xl*
22. The CRT MKR A annotation now indicates the bandwidth of the
300 kHz bandwidth filter. The bandwidth should be 300.00
f30.00
kHz.
23. Key in
(
and
(MK
[REFEREF
RES]
10
kHz,
(FREQUENCY SPAN] 20 kHz, [PEAK SEARCH),
-1.
If necessary, readjust by pressing
-LEVEL)
and using the DATA knob to place the signal
peak near the top of the graticule.
Option 462 4-25