HP 8566B Adjustment Manual page 303

12.
Disconnect cable 85 (gray/green) from A6A9J3 100 MHz INPUT,
cable 4 (yellow) from A6A9J4 VCO TUNE, and cable 5 (green)
from A6A9J5 3.3 GHz INPUT. Remove the A6A9 Phase Lock
Assembly from the extender board in the RF Section, and replace
the A6A9 Phase Lock Assembly front cover.
Install the A6A9 Phase Lock Assembly in the RF Section on
13.
an extender board. Reconnect cable 0 (black) to A6A9J2 CAL
OUTPUT, cable 85 (gray/green) to A6A9J3 100 MHz INPUT, cable
4 (yellow) to A6A9J4 VCO TUNE, and cable 5 (green) to A6A9J5
3.3 GHz INPUT.
14. Set the spectrum analyzer LINE switch to ON and press
front-panel CAL OUTPUT connector.
15. Press CsGHz) on
CAL OUTPUT signal on the second spectrum analyzer to the RF
INPUT on the second spectrum analyzer, and press [RECALL_) 8.
16. Adjust the AMPTD CAL control on the second spectrum analyzer
for a -10.00 dBm displayed signal, and then press m
[F
REQUENCY
17. Connect the RF INPUT of the second spectrum analyzer to the RF
Section A6A9Jl 300 MHz OUTPUT. Set the controls of the second
spectrum analyzer as follows:
CENTER FREQUENCY . . . . . . . . . . . . . . . . . . . . . . . . . . . . .550 MHz
FREQUENCY SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 GHz
REFERENCE LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +25 dBm
LOG dB/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 dB
18. The 300 MHz output signal should be visible on the display of
the second spectrum analyzer, along with other harmonics of
100 MHz. Press MARKER
the peak of the displayed 300 MHz signal. Adjust A6A9AlC29
TRIPLER MATCH to maximize the power level of the 300 MHz
signal.
(
Press MARKER
19.
PEAK SEARCH
the 300 MHz signal is greater than + 16.5 dBm. Press MARKER
to position the second marker on the peak of each of the other
displayed harmonics in succession, and verify that the level of
each harmonic is greater than 15 dB down relative to the peak of
the 300 MHz signal.
Disconnect the second spectrum analyzer from the RF Section
20.
the RF Section front-panel CAL OUTPUT connector.
18. RF' Module Phase Lock Adjustments
the
second spectrum analyzer. Connect the
) to position a marker on
SEARCH
)
and verify that the power level of
Adjustments 3-163