Filter
Top Products
8. 21.4 MHz Bandwidth Filter Adjustments
33. Key in
t-1
100 kHz,
C-1
200 kHz, and MARKER
[PEAK SEARCH].
34. Adjust
A4A8R35
LC to align makers on display. MARKER A level
should indicate 1.00 X. See Figure 3-43 for location of adjustment.
35. Repeat steps 31 through 34 until no further adjustment is
necessary.
A4A8
XTAL
Adjustments
36. Key in
@TFTiTj
30
kHz,
[FREQUENCY SPAN] 100 kHz. Press
MARKER
IOFF).
37. Connect crystal filter bypass network between A4A8TPl and
A4A8TP2.
38. Press (REFERENCE LEVEL) and adjust DATA knob to place signal peak
two division from the top graticule line.
39. Adjust
A4ASC44
CTR to center signal on center graticule line.
Adjust
A4A8C42
SYM for best symmetry of signal. See Figure 3-44
for location of adjustments. If unable to adjust
A4A8C42
SYM
for satisfactory signal symmetry, increase or decrease value of
A4A8C43.
Refer to Table 3-3 for range of values.
A4A8
Attenuator-Bandwidth Filter
A4A8
Figure 3-44.
Location of
A4A8
21.4 MHz Crystal Filter Adjustments
40. Remove crystal filter bypass network from between A4A8TPl and
A4A8TP2.
41. Adjust
A4A8C29
CTR to center signal on center graticule line.
Adjust
A4A8C13
SYM for best symmetry of signal. See Figure 3-44
for location of adjustments. If unable to adjust
A4ABC13
SYM
for satisfactory signal symmetry, increase or decrease value of
A4A8C14.
Refer to
Table
3-3 for range of values.
42. Press MARKER
CPEAK
SEARCH) and MARKER
@
43. Key in [FREQUENCY SPAN] 10
kHz.
44. Key in
[REsBW)
3 kHz and MARKER
CPEAK
SEARCH).
Adjustments 3-81