Mhz Resolution Bandwidth Problems - Agilent Technologies 8564EC Service Manual

1 MHz Resolution Bandwidth Problems

Check the crystal shorting switches as follows:
1. On the 8564EC or 8565EC spectrum analyzer, press
2. On the 8564EC or 8565EC spectrum analyzer, connect the
3. If the trace flatness is not within 2.5 dB, a failure probably exists.
4. A trace similar to
5. Press
Figure 9-18 Faulty Crystal Short
Chapter 9
and set the controls as follows:
Resolution bandwidth .............................................. 1 MHz
Span ....................................................................... 500 kHz
Center frequency .................................................. 300 MHz
300 MHz CAL OUTPUT to the INPUT 50Ω.
Figure 9-18 on page 465
failure.
to set the spectrum analyzer to 3 MHz. A trace that
SPAN
slopes across the screen (see
a failed LC pole. To isolate the broken pole refer to the shape factor
information in "30 kHz Resolution Bandwidth Problems."
indicates a crystal short
Figure 9-19, "Faulty LC
IF Section
A5 IF Assembly
PRESET
Pole") indicates
465