HP 8568B, Performance Tests And Adjustments Manual, Page: 243 / 313

19. Second Converter Adjustments
Second Converter
53. Repeat steps 14 through 19 to ensure that Second LO frequency
Final Adjustments
and shift are still properly adjusted.
54. Check the at the 3 points for both the LO
and On the scalar network analyzer, press Max. Press
cursor A and set the cursor at the -3 point Press
cursor A, cursor A, and set the cursor to the corresponding -3
point on the opposite side of the signal. The cursor should now
read 0
55. On the synthesized sweeper, press and place the marker on
either cursor A. Press and place the marker on the cursor A
on the opposite side of the trace.
56. On the synthesized sweeper, press and read the
shown on the ENTRY DISPLAY. Press OFF. See
Figure 3-74 and Figure 3-75.
57. Disconnect all test equipment from HP Spectrum Analyzer
and reconnect all cables within the instrument: cable 80
(gray/black) between
and and cable 92 (white/red)
between and
58. Connect HP Spectrum Analyzer CAL OUTPUT to SIGNAL
INPUT 2. Key in
(
CENTER FREQUENCY
)
20 MHz,
(
FREQUENCY SPAN
)
1
MHz,
(
REFERENCE
-7 SCALE LOG
[
ENTER
1
300
59. Key in
, (
PEAK SEARCH
]
Key in and note
signal amplitude as indicated by marker level CRT annotation.
60. Continue to key in then (SHIFT) while adjusting
for maximum amplitude and the same amplitude in both
states of the Second LO
61. Reinstall RF Converter in instrument. See installation procedure
in RF Section of Troubleshooting and Repair Manual, Volume 1.
Adjustments 3-129