Faulty Crystal Symmetry; Step Gains - HP 8560A Service Manual

R L O d B m
C E N T E R 300.0000MHz

Step Gains

Refer to function blocks B, H, and I of A5 IF Filter Schematic Diagram (sheets 1 of 3 and
2 3) HP 856OA/61B/63A
of in the
ADJ OFF.
3. Disconnect W29 (coax 7) from A5J3 and W27 (coax 3) from A5J5.
4. Inject a -5 dBm, 10.7 MHz signal into A5J3.
5. Monitor the output of A5J5 with another spectrum analyzer.
6. Simultaneously decrease the signal generator output and spectrum analyzer reference level
in 10 dB steps.
7. At each step, the signal displayed on the other spectrum analyzer should be close to
reference level steps.)
8. Reconnect W29 to A5J3 and W27 (coax 3) to A5J5.
V B W 3.0kHr
Figure 8-15. Faulty Crystal Symmetry
Spectrum Analyzer Component Level Information
S P A N 1 0 0 0kHz
S W P 7 0 m s
SPAN , (w), 1 IGHz).
IF Section 8-33
S K 1 8 4
binder.