Agilent Technologies HP 8566B Spécifications Page 224

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8. 21.4 MHz Bandwidth Filter Adjustments
11.
12.
13.
A4A4
XTAL
14.
Adjustments
15.
16.
17.
18.
19.
20.
21.
Key in
[RESBW)
100
kHz,
C-SPAN)
200
kHz
and MARKER
(PEAK
SEARCH).
Adjust
A4A4R43
LC to align markers on display. MARKER A level
should indicate 1.00 X. See Figure 3-41 for location of adjustment.
Repeat steps 10 through 12 until no further adjustment is
necessary.
Key in MARKER
loFF)
@TiiT)
30
kHz
and [FREQUENCY
SPAN)
100
kHz.
Press [REFERENCE LEVEL] and adjust DATA knob to set signal peak
approximately 2 divisions down from the top CRT graticule line.
Connect crystal filter bypass networks between
A4A4TPl
and
A4A4TP2
and between
A4A4TP4
and
A4A4TP5.
Adjust
A4A4C20
CTR to center signal on center graticule
line. Adjust
A4A4C9
SYM for best symmetry of signal. See
Figure 3-42 for location of adjustments. If unable to adjust SYM
for satisfactory signal symmetry, increase or decrease value of
A4A4ClO.
Refer to Table 3-3 for range of values.
A4A4
Bandwidt\h
Fi I ter
L
Figure 3-42.
A4A4
Location of
A4A4
21.4 MHz Crystal Filter Adjustments
Remove crystal filter bypass network from between
A4A4TP4
and
A4A4TP5.
Adjust
A4A4C74
CTR to center signal on center graticule line.
Adjust
A4A4C39
SYM for best symmetry of signal. See Figure 3-42
for location of adjustments. If unable to adjust
A4A4C39
SYM
for satisfactory signal symmetry, increase or decrease value of
A4A4C38.
Refer to
l?rble
3-3 for range of values.
Remove crystal filter bypass network from between
A4A4TPl
and
A4A4TP2.
Adjust
A4A4C73
CTR to center signal on center graticule line.
Adjust
A4A4C65
SYM for best symmetry of signal. See Figure 3-42
for location of adjustments. If unable to adjust
A4A4C65
SYM
3.94
Adjustments
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