
18. RF Module Phase Lock Adjustments
SPECTRUU
ANALYZER
DIGITIZING
SPECTRM
ANALYZER
Figure 3-81. RF Module Phase Lock Adjustments Setup
A6
A5%&3kI
ES
A6A9
PHASE
COCK
u
TOP VIEW
A6A9
R27
=
10.0
kQ
(85660A)
56.2kQ
(856608)
Figure 3-82. Location of RF Module Phase Lock Adjustments
3. Disconnect the cable 2 (red) from
A6A9Jl
300 MHz OUTPUT,
the cable 0 (black) from A6A9J2 CAL OUTPUT, the cable 85
(gray/green) from A6A9J3 100 MHz INPUT, the cable 4 (yellow)
from A6A9J4 VCO TUNE, and the cable 5 (green) from
A6A9J5
3.3
GHz
INPUT. Remove the
A6A9
Phase Lock Assembly from the
RF Section.
4. Remove the front cover from the
A6A9
Phase Lock Assembly,
and install it in the RF Section on an extender board. Reconnect
the cable 85 (gray/green) to A6A9J3 100 MHz INPUT, the cable 4
(yellow) to A6A9J4 VCO TUNE, and cable 5 (green) to A6A9J5 3.3
GHz
INPUT.
5. Set the spectrum analyzer LINE switch to ON, and press
@izEiFGHz).
Adjustments 3-161
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