38 Installation Note N5247-90113
Installation Procedure for the Upgrade
-
Step 18. Connect A71-A74 Bias Tee Combiner’s New Cables to A70
Low Frequency Extension (LFE) Board and the Other Ends of the New
Cables Connected to the IF Multiplier (IF MUX) Board
1.
Connect the IF gray cables items
through
as shown in
and
. (8120-5014 (x2), 8120-5017 (x3)). (i.e.,
one end was installed in
.)
2.
Then choose one of the following:
— Version 6 Synthesizers
: Connect the Source 1, Source 2, and LO
Source cables to the LFE board as shown (N5245-60027,
N5242-60079, and N5242-60080) – (items
through
). The
other end of the N5245-60027, N5242-60079, and N5242-60080
are connected to Source1, Source 2, and LO Source boards in a later
step. Refer to
.
— Version 7 Synthesizers
: Connect the direct digital synthesizer (DDS)
assembly cables Source 1, Source 2, and LO Source cables to the
LFE board as shown (N5240-60112, N5240-60113, and
N5240-60114) – (items
through
). The other end of the
N5240-60112, N5240-60113, and N5240-60114 are connected to
Source1, Source 2, and LO Source boards in a later step. Refer to
.
This upgrade kit contains cables for Version 6 synthesizers and Version 7
direct digital synthesizer (DDS) assemblies. Please refer to your
instrument’s Service Guide, if you are unclear which assembly you have
installed. Refer to
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