Agilent Technologies 8590 Series Service Manual page 51

5. Press
6. Press
Shorting the crystal test points to ground may permanently damage the
CAUTION
bandwidth board assembly. If you make your own shorts, it is advisable
to insulate the bare wires and connectors.
7. Connect the crystal shorts (through the access holes on the assembly
8. Adjust A13C54 CTR for minimum signal amplitude. Then adjust
9. Remove the crystal short from A13TP1 and A13TP2 and connect it
10.Adjust A13C25 CTR for minimum signal amplitude. Then adjust
11.Remove the crystal short from A11TP4 and A11TP5. Connect the
12.Adjust A11C54 CTR for minimum signal amplitude. Then adjust
13.Remove the crystal short from A11TP1 and A11TP2. Connect the
14.Adjust A11C25 CTR for minimum signal amplitude. Then adjust
Chapter 2
, then use the knob to place the signal at the sixth
AMPLITUDE
graticule line from the bottom.
, 30, on the analyzer.
BW kHz
cover) across the following pairs of test points.
A13TP1 and A13TP2
A11TP1 and A11TP2
A11TP4 and A11TP5
A13C38 SYM and A13C54 CTR for a centered and symmetrical
bandpass response as shown in
across A13TP4 and A13TP5.
A13C15 SYM and A13C25 CTR for a centered and symmetrical
bandpass response.
short across A13TP1 and A13TP2.
A11C38 SYM and A11C54 CTR for a centered and symmetrical
bandpass response.
short across A11TP4 and A11TP5.
A11C15 SYM and A11C25 CTR for a centered and symmetrical
bandpass response.
5. Crystal and LC Bandwidth Filter
Figure 2-9.
Making Adjustments
51