
9. 6 dB Resolution Bandwidth Adjustments
24. Press MARKER
IOFF),
then MARKER
[nl.
25. Using the DATA knob, adjust the marker down one side of the
displayed signal to the 6
dB
point; CRT MKR annotation indicates
.500
x.
26. Adjust
A4A9R65
10
kHz
for MKR A indication of 5.00
kHz
while
maintaining the marker at
.500
X using the DATA knob. Refer to
Figure 4-7 for the adjustment location.
27. Press MARKER
a].
Adjust the marker to the 6
dB
point on the
opposite side of the signal (CRT MKR A annotation indicates 1.00
Xl.
28. The CRT MKR A annotation now indicates the 6
dB
bandwidth of
the 10
kHz
bandwidth filter. The bandwidth should be 10.0 fl.O
kHz
*
29. Key in
@EGi)
3
kHz,
[FREQUENCY
SPANS
5
kHz,
CPEAK
SEARCH~,
and
&ilGGZ=). If necessary, readjust by pressing (REFERENCE
LEVEL_)
and using the DATA knob to place the signal peak near the top of
the graticule.
30. Press MARKER
m
and MARKER
a].
31. Using the DATA knob, adjust the marker down one side of the
displayed signal to the 6
dB
point; CRT MKR A annotation
indicates
.500
X.
32. Adjust
A4A9R66
3
kHz
for MKR A indication of 1.5
kHz
while
maintaining the marker at
.500
X using the DATA knob. Refer to
Figure 4-7 for the adjustment location.
33. Press MARKER la]. Adjust the marker to the 6
dB
point on the
opposite side of the signal (CRT MKR A annotation indicates 1.00
Xl.
34. The CRT MKR [al annotation now indicates the 6
dB
bandwidth
of the 3
kHz
bandwidth filter. The bandwidth should be 3.00
fO.30
kHz
4-26 Option 462
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